Download T175A Midterm Exam Question 1 Marks: 1 Another name for smart home

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T175A Midterm Exam
Question 1
Marks: 1
Another name for smart home is automated home
Answer:
True False
Question 2
Marks: 1
A typical device used in a smart home network has five characteristics
Answer:
True False
Has three characteristics
Question 3
Marks: 1
A millisecond is 1/10000th of a second
Answer:
True False
A millisecond is 1/1000th of a second
Question 4
Marks: 1
As the number of communicating station increases, the channel capacity available for each
station decreases.
Answer:
True False
Question 5
Marks: 1
Router generally works at the edge of a LAN rather than within it.
Answer:
True False
Question 6
Marks: 1
An interface increases the practical distance between nodes by regenerating the signal and
passing it on.
Answer:
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True False
An amplifier
Question 7
Marks: 1
Bluetooth devices communicate using infrared.
Answer:
True False
Using radio waves
Question 8
Marks: 1
Distortion is when a signal gets weaker the further it travels, because some of its energy is
absorbed by the transmission medium.
Answer:
True False
Attenuation
Question 9
Marks: 1
Local Area Networks (LANs) cover small areas such as a home.
Answer:
True False
Personal area network (PANs)
Question 10
Marks: 1
Printer is controlled by a processor and it has memory.
Answer:
True False
Question 11
Marks: 1
There is no an upper limit on the number of active devices that can communicate in a piconet.
Answer:
True False
8 devices per piconet
For Wifi Network , there is not upper limit , but it depends on the device
Question 12
Marks: 1
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Personal Area Networks (PANs) connect together two or more LANs that are geographically
separated.
Answer:
True False
Wide area network (WAN)
Question 13
Marks: 1
Any two Bluetooth-enabled devices can form an ad hoc connection and establish a personal area
network (PAN) known as a piconet which can connect together up to eight communicating devices.
Answer:
True False
Question 14
Marks: 1
The ratio of activity to inactivity is known as round trip time.
Answer:
True False
Duty cycle
Question 15
Marks: 1
Sensors are devices that measure some physical property.
Answer:
True False
Question 16
Marks: 1
The ratio of activity to inactivity is known as a duty cycle.
Answer:
True False
Question 17
Marks: 1
Actuators are devices that take some kind of action in response to a signal.
Answer:
True False
Question 18
Marks: 1
The hard disk in a computer is used to store data.
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Answer:
True False
Question 19
Marks: 1
A stand-alone computer which is a computer that is connected to a network
Answer:
True False
A stand-alone computer is computer that isn’t connected to network
Question 20
Marks: 1
The hard disk in computer is used to store data?
Answer:
True False
Question 21
Marks: 1
Morse code is an example of analogue coding scheme
Answer:
True False
digital
Question 22
Marks: 1
A supplementary technology is one that continues to coexist alongside an earlier technology
Answer:
True False
Question 23
Marks: 1
Cassette tapes are representing data in analogue form
Answer:
True False
Question 24
Marks: 1
Morse code is an example of a digital coding scheme
Answer:
True False
Question 25
Marks: 1
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Distortion can be caused by -----------.
Choose one answer.
a. other signals travelling in vicinity
b. waves of energy such as solar energy, lightning, and pulses of energy from electrical
machinery
c. mobile may cause distortion to other signals
d. other signals travelling in vicinity, waves of energy and mobiles
Question 26
Marks: 1
To convey data from one point to another we need to represent the data by means of a ------.
Choose one answer.
a. network
b. protocol
c. signal
d. modem
Question 27
Marks: 1
The process of modifying the carrier wave is called -----------.
Choose one answer.
a. encryption
b. modulation
c. translation
d. modification
Question 28
Marks: 1
The works of the buffer is -----------.
Choose one answer.
a. for holding the data in the printer before being processed
b. for processing data
c. for holding the data in the printer before being processed & for processing data
Question 29
Marks: 1
When a signal travels from one device to another it has some problems effected in called ----------.
Choose one answer.
a. attenuation
b. distortion
c. attenuation & distortion
Question 30
Marks: 1
In …………. Representation, just two symbol or ‘states’ are used.
Choose one answer.
a. Vector graphic.
b. Binary.
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c. Pixel.
d. All of the above.
Question 31
Marks: 1
How many bits are needed to code 15 colors in an image?
Choose one answer.
a. 3 bits.
b. 4 bits
c. 5 bits
d. 6 bits
Question 32
Marks: 1
A magnetic storage is one type of different types of storage. At any device did in a computer?
Choose one answer.
a. CD-ROM.
b. H.D
c. Buffer.
d. DVD.
Question 33
Marks: 1
Graphics and image editing software allows you to create and edit drawings and images. What of
this software can you used?
Choose one answer.
a. Excel.
b. Access.
c. Digital photography
d. Power point.
Question 34
Marks: 1
Batteries differ in cost, running time, size and weight
Answer:
True False
Question 35
Marks: 1
Storage used in Camcorders and their properties:
Choose one answer.
a. Tape
b. Flash
c. DVD
d. All the above
Question 36
Marks: 1
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The symbol for amps is a small a, so this is written as "0.3 a". The symbol for volts is a capital
V and for ohms is the capital Greek letter omega, Ω
Answer:
True False
Capital A
Question 37
Marks: 1
A microphone converts picture in the air to an electrical signal.
Answer:
True False
Convert sound
Question 38
Marks: 1
A NiMH battery has a greater capacity than a NiCd battery of the same size and weight
Answer:
True False
Question 39
Marks: 1
Match
Any coding scheme that allocates a binary code to each pixel in order to define its color and
brightness is called…Bitmap……
Transmitting each bit twice is an example of …error detecting code …….
triplet scheme is an error correcting code
Question 40
Marks: 1
Match :
If you are using five bits to code 17 colors, how many codes are unused?
5-bits = 2 power 5 = 32 code
32 -17 = 15
If you are using 4 bits to code 11 colors, how many codes are unused?
4 bits = 2 power 4 = 16
16 – 11 = 5
Question 41
Marks: 1
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In ad hoc mode, the WiFi network is isolated from any other network.
Answer:
True False
Question 42
Marks: 1
Wide Area Networks (WANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Local area network (LAN)
Question 43
Marks: 1
In ad hoc mode, WiFi stations are connected to a wired network via an access point.
Answer:
True False
Infrastructure mode
Question 44
Marks: 1
Tapes allow random access
Answer:
True False
DVD and some type of flash memory allow random access
Question 45
Marks: 1
Word-processing software, allows you to create, edit and store documents, what of these
software can you used?
Choose one answer.
a. Database.
b. PDF.
c. Microsoft word
d. Access
a typical device used in a smart home network has 5 characteristics
answer false
‫االجابة الصحيحة‬3 characteristics
Question 2
Many monitoring and control devices used in the home need to be active only for long period
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answer false
‫االجابة‬short
Question 4
Ad hoc mode network doesn't need central control
true
Question 5
All frames include the mac adress of sending node only
false
Question 7
Because of low power of bluetooth communication is limited to 10 m
true
Question 8
Wide area network connects two or more lan geographically separated
true
Question 9
When we need more than 8 devices two or more piconets are connected
true
Question 10
Throughput describe maximum data rate of wifi network
false
Bluetooth device needs mac address
true
Question 12
Attenuation is when a signal gets weaker the further it travels, because some of its energy is
absorbed by the transmission medium
true
Question 13
A wifi network can work in ad hoc mode or infrastructure mode
true
Question 14
The ratio of activity to inactivity is known as round trip time
false
‫االجابة‬duty cycle
Question 15
ZigBee was designed specifically for networks set up for the purposes of monitoring and control
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true
Question 21
Cassette taps represent data in analogue form
true
Block 3 page 16
Question 22
Morse code is an example of a digital coding scheme
true
Question 23
substitution technology is one that completely replaces another
true
Question 24
Digital images are generated by dividing it into large numbers of bits
False
number of pixels
Question 25
The process of modifying the carrier wave
answer modulation
Question 26
Types of network according to geographically spread
Lan and Wan
Question 27
The maximum practical distance that a signal can be propagated is influenced by factors such as
the signal frequency and strength, the physical environment and the design of the antenna
Question 28
distortion can be caused by
other signals travelling in the vicinity, or by waves of energy such as solar energy, lightning, and
pulses of energy from electrical machinery
Question 29
Which of the following is considered as document clue
Verbal clue and visual clue
Question 30
To improve the resolution of image we will need to increase number of
pixels
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Question 31
How many bits are needed to code 15 colors in image
4-bits
4-bits give 16 code
3-bits give 8 codes
5 bits give 32 code
Question 32
Optical devices is a type of storage
DVD
CD-Rom ‫يعنى الجهاز القارئ لل‬CD
Question 34
A microphone converts picture in the air to an electrical signal
false
Question 35
Battery voltage
‫المعادلة‬
Current in amps = Voltage in volts divided resistance in ohms
Question 37
Flash memory is in solid state
true
Question 38
Batteries differ in size , cost and run time
true
Question 40
If you are using 5 bits to code 17 color , how many colors are unused
answer
32 15 = 17 ‫طرح‬
If you are using 4 bits to code 11 color , how many colors are unused
answer
16 5 = 11 ‫طرح‬
Question 42
Document abstracts contain document reference
‫أعتقد‬False
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microwave transmission for newsgathering
true
Throughput describe practical data rate of wifi network
True
Ethernet is the dominant standard in wired LANs
True
a NiMH battery has a greater capacity than a NiCd battery of the same size and weight, but
costs more
answer true
A device, such as a microphoneand CCD light sensor, which converts energy or information from
one medium to another is called a transducer.
transceiver
a device that transmits and
receives signals
example antenna and aerial
A transponder is a device
that automatically sends a signal in response to interrogation from
another device.
example RFID tag
System boundary defines which components are part or outside of the system.
Answer:
True False
Suppose that, on average, in a period of 100 hours a system is available for 99.5 hours. Then
the system is unavailable for
Choose one answer.
a. 0.5 minutes
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b. 30 minutes
c. 50 minutes
d. 5 minutes
‘Lithium Ion’ (Li-ion) batteries are commonly used in large computers and other big ICT
equipment
Answer:
True False
Lithium Ion’ (Li-ion) batteries are commonly used in laptop computers and other portable ICT
equipment.
If a battery voltage is 3 volts and the circuit resistance is 100 ohms the current flowing is 0.3
amps
Answer:
True False
Current in amps = voltage in volts / resistance in ohms
Current in amps= 3 / 100 = 0.03 amps
Storage devices
Tape is a magnetic storage medium
a DVD is an optical storage medium
Memory cards use flash memory, which is an electrical storage medium
Writing to and reading from memory cards is faster than with a DVD.
DVD and some types of flash memory allow random access, but tape does not. Tape is written
and read sequentially.
Flash memory is solid state. Tape and DVDs require moving parts to read and write data
The symbol for amps is a capital A
The symbol for volts is a capital V
for ohms is the capital Greek letter omega
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The frequency of the wave is the number of wave cycles it completes in a single minute
false
answer in single second
Data is representation of information
true
The output of microphone is analogue signal
In a camcorder what is the distance to the object if the transit time is 25 ns.
Choose one answer.
a. 7.5 m
‫المعادلةالمسافة بالمتر = الوقت بالثوانى‬X ‫سرعة الضوء بالمتر‬
distance in meter = time in seconds X speed of light in meter
speed of light= 3X10 power 8
power ‫يعنى اوس‬
ns = 1 / 10 power 9
distance = ( 25/10 power 9 ) X (3 X 10power8)
distance = 7.5 metre
Throughput describe maximum data rate of wifi network
‫الجواب‬false
The practical message data rate that can be achieved in a wireless network is often described
as its throughput. Even in ideal operating conditions, the throughput may be only 50% to 75% of
the maximum data rate
The symbol for amps is a capital A, so this is written as 0.3 A. The symbol for volts is a capital
V and for ohms is the capital Greek letter omega, W.
Question 1
Marks: 1
to proved information about light, heat, humidity, sound, movement, water levels in smart homes
1 Mbps are required
Answer:
True False
‫انا مش متاكد‬
Question 2
Marks: 1
Sensors are devices that measure some physical property
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Answer:
True False
Question 3
Marks: 1
Many monitoring and control devices used in the home need to be active for longer periods
Answer:
True False
Short period
Question 4
Marks: 1
Personal Area Networks (PANs) connect together two or more LANs that are geographically
separated.
Answer:
True False
Wide area network(wan)
Question 5
Marks: 1
The abstract is usually presented after the main text.
Answer:
True False
The abstract is usually presented before the main text
Question 6
Marks: 1
Infrastructure mode network does not need central control.
Answer:
True False
Need Central control ( access point)
Question 7
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a bit
rate of 100 Mbps.
Answer:
True False
1Mbps
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Question 8
Marks: 1
Ethernet is not the dominant standard in wired LANs.
Answer:
True False
Ethernet is the dominant standard in wired LANs.
Question 9
Marks: 1
Two devices in the piconet become the master units and the others act as slaves.
Answer:
True False
Question 10
Marks: 1
Local Area Networks (LANs) connect together a number of nodes within a single building or group
of buildings situated close to each other.
Answer:
True False
Question 11
Marks: 1
A WiFi network can operate in an ad hoc mode or an infrastructure mode.
Answer:
True False
Question 12
Marks: 1
In ad hoc mode, the WiFi network is isolated from any other network.
Answer:
True False
Question 13
Marks: 1
Wide Area Networks (WANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Local area network(LAN)
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Question 14
Marks: 1
Sensors are devices that take some kind of action in response to a signal.
Answer:
True False
Actuators
Question 15
Marks: 1
Smart homes are also referred to as 'automated homes'.
Answer:
True False
Question 16
Marks: 1
The ratio of activity to inactivity is known as a duty cycle.
Answer:
True False
Question 17
Marks: 1
The ratio of activity to inactivity is known as round trip time.
Answer:
True False
Question 18
Marks: 1
A stand-alone computer which is a computer that is connected to a network
Answer:
True False
Not connected to a network
Question 19
Marks: 1
Bar code is a pattern of narrow and wide stripes which can be read by a machine.
Answer:
True False
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Question 20
Marks: 1
Taking notes is a useless technique for remembering the main points of an article.
Answer:
True False
useful
Question 21
Marks: 1
A substitution technology one that completely replaces another
Answer:
True False
Question 22
Marks: 1
Morse code is an example of analogue coding scheme
Answer:
True False
Digital
Question 23
Marks: 1
Cassette tapes are representing data in analogue form
Answer:
True False
Question 24
Marks: 1
A supplementary technology one that completely replaces another
Answer:
True False
A substitution technology
Question 25
Marks: 1
The works of the buffer is a. for holding the data in the printer before being processed
Question 27
Marks: 1
When a signal travels from one device to another it has some problems effected in called c.
attenuation & distortion
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Question 28
Marks: 1
Estimate how many times faster the data rate of the original Ethernet standard (10 Mbps) is,
compared to the data rate of a modern standard dial-up modem of 56 kbps. (Hint: round down
the dial-up modem rate to 50 kbps)
10 Mbps = 10 000 kbps
10 000 kbps / 50 kbps = 200 time
Question 29
Marks: 1
Propagation delay is the time taken for a signal to travel from its source to its destination.
Question 30
Marks: 1
In Binary. Representation, just two symbol or ‘states’ are used.
Choose one answer.
Question 31
Marks: 1
To improve the resolution of an image, you will need to increase the number of: Pixels
Choose one answer.
Question 32
Marks: 1
Word-processing software, allows you to create, edit and store documents, what of these
software can you used?
Microsoft word
Question 33
Marks: 1
A magnetic storage is one type of different types of storage. At any device did in a computer?
Hard disk
Question 34
Marks: 1
Microwave transmission is used for newsgathering.
Answer:
True False
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Question 35
Marks: 1
The output from a microphone is analogue
Choose one answer.
Question 36
Marks: 1
DVD and some types of flash memory allow random access.
Answer:
True False
Question 37
Marks: 1
Newsreels had moving images and sound but they were not live
Answer:
True False
Question 38
Marks: 1
A video camera alone might not record (store) the image, but a camcorder is a combination of
the two: the camera a video recorder.
Answer:
True False
Question 41
Marks: 1
The achievable data rate reduce with distance from the AP.
Answer:
True False
Question 42
Marks: 1
Router generally works at the edge of a LAN rather than within it.
Answer:
True False
Question 43
Marks: 1
In a full mesh topology each node has a point-to-point link with every other node.
Answer:
True False
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Question 44
Marks: 1
A microphone that converts energy or information from one medium to another is called a
transducer
Answer:
True False
Question 45
Marks: 1
What of these devices provided to store applications:
Choose one answer.
Hard disk
I.
Multiple choices
1)
ICT stands for:
a.
Information and Control Terminologies
b.
Information and Communication Technology
c.
Information and Conversion Technology
d.
Introduction and Communication Technology
2)
The primary function(s) of the network component in mobile system is to:
a.
Store data
b.
Convey data
c.
Select route
d.
b and c
3)
Information is
a.
Temporary storage device
b.
System unit
c.
The meaning that people give to data in particular contexts
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d.
None of the above
4)
Computer networks
a.
Are everywhere
b.
Are nowhere
c.
Are dangerous
d.
None of the above
5)
The Course T175 consists of
a.
Two Blocks
b.
Three Blocks
c.
Four Blocks
d.
Non of the above
II.
True/False questions
1) "Block 2 Communication and identity" looks at how networks can connect people, information and
devices.
TRUE
2)
FALSE
Data is a representation of information so that it can be conveyed, manipulated or stored.
TRUE
3)
FALSE
ICT systems are not embedded in our daily life.
TRUE
FALSE
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4)
Smart home is by integrating the control of home systems (entertainment, lighting, security, heating).
TRUE
FALSE
5)
The communication devices do not operate in isolation but need to be part of an information and
communication.
TRUE
FALSE
1)A System is:
a.
A collection of related components that collaboratively work to achieve the predefined goals.
b.
A Temporary storage device.
c.
Everywhere.
d.
b and c
2)
In the following system map, the number 3 represents:
a.
Component.
b.
System environment.
c.
Subsystem.
d.
System boundary.
3)
A Block diagram
a.
Is temporary storage device
b.
Is another graphical way of representing a system.
c.
Is the meaning that people give to data in particular contexts
d.
None of the above
4)
The transmitter
a.
Is everywhere.
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b.
Is nowhere.
c.
Receives a message from User 1 and manipulates it into data which can be sent into the network.
d.
None of the above.
5)
The Network
a.
Is a communication channel in that it conveys data from the transmitter to the receiver.
b.
Is three Blocks.
c.
Is four Blocks.
d.
None of the above.
I.
1)
True/False questions
The receiver receives data from network and manipulates it into a message to send to
TRUE
User 2.
FALSE
2)
Capacity is the ability of a communication link to convey data is measured by a quantity known as its
‘bandwidth’.
TRUE
3)
FALSE
A computer receives data from a user by means of output devices.
TRUE
FALSE
4)
Spider diagrams are used when developing your own ideas on a subject, for example when planning a
report or essay.
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TRUE
5)
FALSE
Bar code is a pattern of narrow and wide stripes which can be read by a machine.
TRUE
I.
FALSE
Multiple choices
1) _____________ is the practice of finding and using the verbal and the visual clues of a well structure
document.
a.
Skimming
b.
Navigation
c.
Comparison
d.
Passive Reading
2) _____________ involves reading in a disciplined manner with some purpose, and thinking continually
about what you are reading.
a.
Passive reading
b.
Convey data
c.
Active reading
d.
None of the above
3)
Protocols are needed to establish a _________________.
a.
Temporary storage device
b.
Common language
c.
The meaning that people give to data in particular contexts
d.
None of the above
4)
Which of following numbers is in "scientific notation"?
a.
104
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b.
100000
c.
5 x 103
d.
Both a & c
5)
____________ is the time taken for a signal to travel from its source to its destination.
a.
Propagation Delay
b.
Transmission time
c.
Round trip time
d.
Slot time
II.
1)
True/False questions
Electromagnetic waves are characterized by their wave frequency.
TRUE
2)
FALSE
Demodulation is the process of modifying the carrier property in order to represent data (message).
TRUE
3)
An Amplifier can be used to boost the signal power.
TRUE
4)
FALSE
Transceivers are the devices that can perform both the sending and receiving of signals.
TRUE
5)
FALSE
FALSE
NIC stands for: Napa Information Communication.
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TRUE
III.
FALSE
Bonus question
1) What is the full expression of this "abbreviation"?

MAC: ________Media Access Control_______________________
Quiz 1
Marks: 1
The process of modifying the carrier wave is called encryption.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
Every WiFi station requires a MAC address.
Answer:
True False
Correct
Marks for this submission: 1/1.
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3
Marks: 1
In a full mesh topology each node has a point-to-point link with every other node.
Answer:
True False
Correct
Marks for this submission: 1/1.
4
Marks: 1
When a signal travels from one device to another it has some problems effected in called ----------.
Choose one answer.
a. attenuation
b. attenuation & distortion
c. distortion
Correct
Marks for this submission: 1/1.
5
Marks: 1
The term often used to describe devices connected to a wired network is -----------.
Choose one answer.
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a. node
b. MAC
c. bandwidth
d. mesh
Correct
Marks for this submission: 1/1.
6
Marks: 1
Attenuation does not depend on the distance it has to travel.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a bit
rate of 1 Mbps.
Answer:
True False
Correct
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Marks for this submission: 1/1.
8
Marks: 1
Open source is not the programs available to other programmers to look and edit.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
Smart home is by integrating the control of home systems, for example:
Choose one answer.
a. Lighting and Entertainment
b. Security and Heating
c. Lighting, Entertainment, Security and Heating
Correct
Marks for this submission: 1/1.
10
Marks: 1
Low-frequency waves can travel further than high-frequency waves.
Answer:
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True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
Bus topology is one where all the nodes connect to a single network cable.
Answer:
True False
Correct
Marks for this submission: 1/1.
12
Marks: 1
Taking notes is a useless technique for remembering the main points of an article.
Answer:
True False
Correct
Marks for this submission: 1/1.
13
Marks: 1
Transceivers are the devices that can only perform sending of signals.
Answer:
True False
Correct
Marks for this submission: 1/1.
14
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Marks: 1
To convey data from one point to another we need to represent the data by means of a signal.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
The process of modifying the carrier wave is called modulation.
Answer:
True False
Correct
Marks for this submission: 1/1.
16
Marks: 1
Bluetooth uses the 2.2 GHz ISM frequency band.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
-------- holds information about the structure of a network and can make decisions about how
data should be routed through it.
Choose one answer.
a. A router
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b. NIC
c. A WiFi
d. A modem
Correct
Marks for this submission: 1/1.
18
Marks: 1
Transceivers are the devices that can perform both the sending and receiving of signals.
Answer:
True False
Correct
Marks for this submission: 1/1.
19
Marks: 1
------------ increases the practical distance between nodes by regenerating the signal and
passing it on.
Choose one answer.
a. A fiber optical cable
www.aou-q8.com
b. A repeater
c. An interface
Correct
Marks for this submission: 1/1.
20
Marks: 1
Bluetooth device needs a MAC address.
Answer:
True False
Correct
Marks for this submission: 1/1.
Quiz
1
Marks: 1
Wireless network is a network that transmit data through the air (or space) using radio waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
A Repeater increases the practical distance between nodes by regenerating the signal and
passing it on.
Answer:
www.aou-q8.com
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
Open source is not the programs available to other programmers to look and edit.
Answer:
True False
Correct
Marks for this submission: 1/1.
4
Marks: 1
All frames include the MAC address of both the destination node and the sending node.
Answer:
True False
Correct
Marks for this submission: 1/1.
5
Marks: 1
Bus topology is one where each node has its own cabled link to a central point called a hub.
Answer:
True False
Correct
Marks for this submission: 1/1.
6
Marks: 1
www.aou-q8.com
All frames include the MAC address of the sending node only.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
Low-frequency waves can travel further than high-frequency waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
A well-structured document usually contains a number of clues about its contents. Skimming is
the practice of finding and using these clues. These are:
Choose one answer.
a. Visual clues such as a document’s title, headings; and verbal clues such as the introduction
and conclusion subheadings
b. Visual clues such as introduction and conclusion subheadings
c. Verbal clues such as a document’s title, headings
Correct
www.aou-q8.com
Marks for this submission: 1/1.
9
Marks: 1
DVD stands for Digital Video Disk.
Answer:
True False
Correct
Marks for this submission: 1/1.
10
Marks: 1
Propagation delay depends on a number of factors, including the distance the signal has to
travel and the signal's speed.
Answer:
True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
----------- can be used to boost the signal power.
Choose one answer.
a. A modem
b. A protocol
www.aou-q8.com
c. An amplifier
d. A WiFi
Correct
Marks for this submission: 1/1.
12
Marks: 1
To convey data from one point to another we need to represent the data by means of a -------.
Choose one answer.
a. signal
b. network
c. protocol
d. modem
Correct
Marks for this submission: 1/1.
13
Marks: 1
In case of the memory of a file, 1 Kilo byte is ______.
www.aou-q8.com
Choose one answer.
a. 512 x 8 bits
b. 1000 bytes
c. 1024 bytes
Correct
Marks for this submission: 1/1.
14
Marks: 1
Transceivers are the devices that can perform both the sending and receiving of signals.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
Ethernet is the dominant standard in wired LANs.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
16
Marks: 1
Network interface card (NIC) provides the interface between the node and the software.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
Networked devices need protocols when communicating with each other to:
Choose one answer.
a. Control use of the communication link
b. Establish a common language & Control use of the communication link
c. Establish a common language
Correct
Marks for this submission: 1/1.
18
Marks: 1
The radio signals were picked up by a special electrical conductor called a cable.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
19
Marks: 1
Infrastructure mode network does not need central control.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
Each node is assigned an identity number known as its PoP address.
Answer:
True False
Correct
Marks for this submission: 1/1.
Quiz
1
Marks: 1
Bluetooth devices communicate using infrared.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
----------- can be used to boost the signal power.
www.aou-q8.com
Choose one answer.
a. An amplifier
b. A modem
c. A protocol
d. A WiFi
Correct
Marks for this submission: 1/1.
3
Marks: 1
The radio signals were picked up by a special electrical conductor called an antenna.
Answer:
True False
Correct
Marks for this submission: 1/1.
4
Marks: 1
All frames include the MAC address of the sending node only.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
5
Marks: 1
MAC stands for -----------.
Choose one answer.
a. Media Access Control
b. Minimum Access Control
c. Maximum Access Control
d. Maximum Allowed Control
Correct
Marks for this submission: 1/1.
6
Marks: 1
Wide Area Networks (WANs) cover small areas such as a home.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
7
Marks: 1
Bluetooth uses the 2.2 GHz ISM frequency band.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
Local Area Networks (LANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
As the number of communicating station increases, the channel capacity available for each
station decreases.
Answer:
True False
Correct
Marks for this submission: 1/1.
10
Marks: 1
Document abstract's summarizes the main points of the text.
Answer:
True False
www.aou-q8.com
Correct
Marks for this submission: 1/1.
11
Marks: 1
In ad hoc mode, the WiFi network is isolated from any other network.
Answer:
True False
Correct
Marks for this submission: 1/1.
12
Marks: 1
Each node needs processes to control the flow of data over the network, which is carried out
by -----------.
Choose one answer.
a. an application layer
b. the network
c. a network interface card (NIC)
Correct
Marks for this submission: 1/1.
13
Marks: 1
www.aou-q8.com
Network interface card (NIC) provides the interface between the node and the communication
link.
Answer:
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
Document title, heading, and figures represent visual clues.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
------------ increases the practical distance between nodes by regenerating the signal and
passing it on.
Choose one answer.
a. An interface
b. A fiber optical cable
c. A repeater
Correct
www.aou-q8.com
Marks for this submission: 1/1.
16
Marks: 1
The standardizing body for Ethernet is ISO.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
The ICT is used in _____________________.
Choose one answer.
a. Manipulation
b. Conveying, Manipulation, Storage
c. Computation and Storage
Correct
Marks for this submission: 1/1.
18
Marks: 1
Network interface card (NIC) provides the interface between the node and the software.
Answer:
www.aou-q8.com
True False
Correct
Marks for this submission: 1/1.
19
Marks: 1
The hard disk in a computer is used to store data.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
A USB memory stick holds much more than a floppy disk.
Answer:
True False
Correct
Marks for this submission: 1/1.
Quiz
1
Marks: 1
Bus topology is one where each node has its own cabled link to a central point called a hub.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
www.aou-q8.com
Marks: 1
One of the main reasons for Ethernet success lies with the decision to hide the standard.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
There is an upper limit on the number of active devices that can communicate in a piconet.
Answer:
True False
Correct
Marks for this submission: 1/1.
4
Marks: 1
Wide Area Networks (WANs) connect together two or more LANs that are geographically
separated.
Answer:
True False
Correct
Marks for this submission: 1/1.
5
Marks: 1
Distortion is when a signal gets weaker the further it travels, because some of its energy is
absorbed by the transmission medium.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
6
Marks: 1
-------- band of radio frequencies is available internationally for unlicensed users.
Choose one answer.
a. 500 KHz to 800 KHz
b. 2.4000 GHz to 2.4835 GHz
c. 89 GHz to 108 GHz
d. 100 MHz to 108 MHz
Correct
Marks for this submission: 1/1.
7
Marks: 1
Antennas can be designed to be directional so that the signal power is directed into a beam,
which allows the signal to travel further for the same power.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
8
Marks: 1
Skimming is the practice of finding and using clues in a document.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
Types of networks (according to geographical spread):
Choose one answer.
a. Star and ring networks
b. WAN
c. LAN & WAN
d. LAN
Correct
Marks for this submission: 1/1.
10
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a bit
rate of 100 Mbps.
www.aou-q8.com
Answer:
True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
When you click the Print icon on your computer’s word-processor screen for print page , the
simple ICT consists of:
Choose one answer.
a. User, Communication link, Printer and computer
b. User
c. Printer and computer
d. Communication link
Correct
Marks for this submission: 1/1.
12
Marks: 1
Data is representation of Information.
Answer:
True False
www.aou-q8.com
Correct
Marks for this submission: 1/1.
13
Marks: 1
Wave cycle is a single full oscillation.
Answer:
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
Low-frequency waves can travel further than high-frequency waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
A WiFi network can operate in -----------.
Choose one answer.
a. Infrastructure mode
b. Ad hoc mode
& Infrastructure mode
www.aou-q8.com
c. Ad hoc mode
Correct
Marks for this submission: 1/1.
16
Marks: 1
To convey data from one point to another we need to represent the data by means of a signal.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
Taking notes is a useless technique for remembering the main points of an article.
Answer:
True False
Correct
Marks for this submission: 1/1.
18
Marks: 1
With ICT System in a supermarket we can manipulate the data about
_____________________.
Choose one answer.
a. Stock Control and loyalty cards
www.aou-q8.com
b. Pricing, Stock Control and loyalty cards
c. Pricing
Correct
Marks for this submission: 1/1.
19
Marks: 1
Physical barriers such as partitions and wall will not affect the maximum rate possible.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
When there is a need for more than eight devices, two or more piconets can be connected
together into what is known as a scatternet.
Answer:
True False
Correct
Marks for this submission: 1/1.
1
Marks: 1
There is no relationship between reliability, cost, capacity, and speed.
www.aou-q8.com
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
Attenuation does not depend on the distance it has to travel.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
The maximum practical distance that a signal can be propagated is influenced by factors such
as -----------.
Choose one answer.
a. the design of the antenna
b. the physical environment
c. the signal frequency and strength, the physical environment and the design of the antenna
d. the signal frequency and strength
www.aou-q8.com
Correct
Marks for this submission: 1/1.
4
Marks: 1
Physical barriers such as partitions and wall will further reduce the maximum rate possible.
Answer:
True False
Correct
Marks for this submission: 1/1.
5
Marks: 1
Reliability is the ability of a technology to perform its intended function, without failure, under
stated conditions and for a stated period of time.
Answer:
True False
Correct
Marks for this submission: 1/1.
6
Marks: 1
Wave cycle is a single full oscillation.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
www.aou-q8.com
One device in the piconet becomes the master unit and the others act as slaves.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
The hard disk in a computer is used to store data.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
A Maximum data rate for which a communication link can support is
________________________
Choose one answer.
a. Bandwidth
b. Data rate
c. Bit rate
Correct
Marks for this submission: 1/1.
www.aou-q8.com
10
Marks: 1
The term electromagnetic spectrum refers to entire range of frequencies of electromagnetic
waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
Propagation Delay is the time taken for a signal to travel from its source to its destination.
Answer:
True False
Correct
Marks for this submission: 1/1.
12
Marks: 1
An interface increases the practical distance between nodes by regenerating the signal and
passing it on.
Answer:
True False
Correct
Marks for this submission: 1/1.
13
Marks: 1
All stations connected to a WiFi network in infrastructure mode will be able to achieve identical
data rate.
www.aou-q8.com
Answer:
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
-------- band of radio frequencies is available internationally for unlicensed users.
Choose one answer.
a. 89 GHz to 108 GHz
b. 100 MHz to 108 MHz
c. 500 KHz to 800 KHz
d. 2.4000 GHz to 2.4835 GHz
Correct
Marks for this submission: 1/1.
15
Marks: 1
When two computers share the services of a printer, we need network for -----------.
Choose one answer.
www.aou-q8.com
a. routing & storing and manipulating data as it travels through the communication links
b. extending the services
c. routing
d. storing and manipulating data as it travels through the communication links
Correct
Marks for this submission: 1/1.
16
Marks: 1
Each node needs processes to control the flow of data over the network, which is carried out
by -----------.
Choose one answer.
a. a network interface card (NIC)
b. an application layer
c. the network
Correct
Marks for this submission: 1/1.
www.aou-q8.com
17
Marks: 1
The process of modifying the carrier wave is called encryption.
Answer:
True False
Correct
Marks for this submission: 1/1.
18
Marks: 1
Electromagnetic waves are not sinusoidal.
Answer:
True False
Correct
Marks for this submission: 1/1.
19
Marks: 1
In infrastructure mode, access points are mobile.
Answer:
True False
Incorrect
Marks for this submission: 0/1.
20
Marks: 1
ICT systems are not embedded in our daily life.
Answer:
True False
www.aou-q8.com
Correct
Marks for this submission: 1/1.
Quiz 1
Marks: 1
The term electromagnetic spectrum refers to entire range of frequencies of electromagnetic
waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
Document abstract's summarizes the main points of the text.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
Bus topology is one where each node has its own cabled link to a central point called a hub.
Answer:
True False
Correct
Marks for this submission: 1/1.
4
Marks: 1
As the number of communicating station increases, the channel capacity available for each
www.aou-q8.com
station decreases.
Answer:
True False
Correct
Marks for this submission: 1/1.
5
Marks: 1
----------- can be used to boost the signal power.
Choose one answer.
a. A modem
b. An amplifier
c. A WiFi
d. A protocol
Correct
Marks for this submission: 1/1.
6
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a
range of approximately 10 m.
Answer:
www.aou-q8.com
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
An electrical voltage is traveling along copper wires between your telephone and the local
exchange.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
The process of modifying the carrier wave is called -----------.
Choose one answer.
a. modulation
b. translation
c. encryption
d. modification
Correct
www.aou-q8.com
Marks for this submission: 1/1.
9
Marks: 1
All frames include the MAC address of the sending node only.
Answer:
True False
Correct
Marks for this submission: 1/1.
10
Marks: 1
When a signal travels from one device to another it has some problems effected in called ----------.
Choose one answer.
a. attenuation & distortion
b. attenuation
c. distortion
Correct
Marks for this submission: 1/1.
11
Marks: 1
-------- band of radio frequencies is available internationally for unlicensed users.
www.aou-q8.com
Choose one answer.
a. 100 MHz to 108 MHz
b. 89 GHz to 108 GHz
c. 2.4000 GHz to 2.4835 GHz
d. 500 KHz to 800 KHz
Correct
Marks for this submission: 1/1.
12
Marks: 1
Reliability is the ability of a technology to perform its intended function, without failure, under
stated conditions and for a stated period of time.
Answer:
True False
Correct
Marks for this submission: 1/1.
13
Marks: 1
Ad hoc mode network does not need central control.
Answer:
True False
www.aou-q8.com
Correct
Marks for this submission: 1/1.
14
Marks: 1
DVD stands for Digital Video Disk.
Answer:
True False FALSE
Incorrect
Marks for this submission: 0/1.
15
Marks: 1
Open source is not the programs available to other programmers to look and edit.
Answer:
True False
Correct
Marks for this submission: 1/1.
16
Marks: 1
Protocol is caused by the changes in electrical and magnetic fields.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
Propagation Delay is the time taken for a signal to travel from its source to its destination.
Answer:
True False
www.aou-q8.com
Correct
Marks for this submission: 1/1.
18
Marks: 1
Speech recognition Software enables the computer to ______.
Choose one answer.
a. respond the Human voice
b. read the accessible text aloud
c. correct the errors in the text
Correct
Marks for this submission: 1/1.
19
Marks: 1
All frames include the MAC address of both the destination node and the sending node.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
www.aou-q8.com
When there is a need for more than eight devices, two or more piconets can be connected
together into what is known as a network.
Answer:
True False
Correct
Marks for this submission: 1/1.
1
Marks: 1
There is relationship between reliability, cost, capacity, and speed.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
DVD stands for Digital Video Disk.
Answer:
True False FALSE
Incorrect
Marks for this submission: 0/1.
3
Marks: 1
A DVD is a form of magnetic storage.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
4
Marks: 1
Low-frequency waves are more efficient at penetrating physical barriers such as walls and
floors.
Answer:
True False
Correct
Marks for this submission: 1/1.
5
Marks: 1
Bluetooth device needs a MAC address.
Answer:
True False
Correct
Marks for this submission: 1/1.
6
Marks: 1
Active reading involves reading in a disciplined manner with some purpose, and thinking
continually about what you are reading.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
-------------- is the time taken for a signal to travel from its source to its destination.
www.aou-q8.com
Choose one answer.
a. Propagation Delay
b. Round trip time
c. Slot time
d. transmission time
Correct
Marks for this submission: 1/1.
8
Marks: 1
------------ increases the practical distance between nodes by regenerating the signal and
passing it on.
Choose one answer.
a. A repeater
b. A fiber optical cable
c. An interface
www.aou-q8.com
Correct
Marks for this submission: 1/1.
9
Marks: 1
Frequency is the number of wave cycles it completes in a single second, measured in Hertz
(Hz).
Answer:
True False
Correct
Marks for this submission: 1/1.
10
Marks: 1
Pulses of light are traveling along copper wires.
Answer:
True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
A Maximum data rate for which a communication link can support is
________________________
Choose one answer.
a. Bit rate
b. Bandwidth
www.aou-q8.com
c. Data rate
Correct
Marks for this submission: 1/1.
12
Marks: 1
When two computers share the services of a printer, we need network for -----------.
Choose one answer.
a. routing
b. routing & storing and manipulating data as it travels through the communication links
c. extending the services
d. storing and manipulating data as it travels through the communication links
Correct
Marks for this submission: 1/1.
13
Marks: 1
One of the main reasons for Ethernet success lies with the decision to hide the standard.
Answer:
www.aou-q8.com
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
High-frequency waves are more efficient at penetrating physical barriers such as walls and
floors.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
Protocol is caused by the changes in electrical and magnetic fields.
Answer:
True False
Correct
Marks for this submission: 1/1.
16
Marks: 1
Frequency is the number of wave cycles it completes in a single minute, measured in Hertz
(Hz).
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
17
Marks: 1
Distortion can be caused by -----------.
Choose one answer.
a. other signals travelling in vicinity
b. other signals travelling in vicinity, waves of energy and mobiles
c. waves of energy such as solar energy, lightning, and pulses of energy from electrical
machinery
d. mobile may cause distortion to other signals
Correct
Marks for this submission: 1/1.
18
Marks: 1
There is an upper limit on the number of active devices that can communicate in a piconet.
Answer:
True False
Correct
Marks for this submission: 1/1.
19
Marks: 1
www.aou-q8.com
Local Area Networks (LANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
Every WiFi station does not require a MAC address.
Answer:
True False
Correct
Marks for this submission: 1/1.
Quiz Review of Attempt 1
20704596 Wael Al-Gazzaz
Started on:
Sunday, 21 December 2008, 06:42 PM
Completed on:
Sunday, 21 December 2008, 07:10 PM
Time taken:
27 mins 28 secs
Raw score:
19/20 (95 %)
Grade:
19 out of a maximum of 20
www.aou-q8.com
1
Marks: 1
Networked devices need protocols when communicating with each other to:
Choose one answer.
a. Establish a common language
b. Control use of the communication link
c. Establish a common language & Control use of the communication link
Correct
Marks for this submission: 1/1.
2
Marks: 1
An amplifier can be used to boost the signal power.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
Attenuation depends on -----------.
Choose one answer.
www.aou-q8.com
a. the type of the medium it is traveling through
b. the distance it has to travel & the type of the medium it is traveling through
c. the distance it has to travel
Correct
Marks for this submission: 1/1.
4
Marks: 1
How many bits are present when we transmit 1 kilo bit per second?
Choose one answer.
a. 1000 bits
b. 512 x 8 bits
c. 1024 bits
Correct
Marks for this submission: 1/1.
5
Marks: 1
www.aou-q8.com
Database server is not dedicated to managing database and making data available to other
computers.
Answer:
True False
Correct
Marks for this submission: 1/1.
6
Marks: 1
High-frequency waves can travel further than low-frequency waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
Data is representation of Information.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
Propagation delay depends on a number of factors, including the distance the signal has to
travel and the signal's speed.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
9
Marks: 1
Local Area Networks (LANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Correct
Marks for this submission: 1/1.
10
Marks: 1
In ad hoc mode, WiFi stations are connected to a wired network via an access point.
Answer:
True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
Two devices in the piconet become the master units and the others act as slaves.
Answer:
True False
Correct
Marks for this submission: 1/1.
12
Marks: 1
Propagation delay depends on a number of factors, including -----------.
Choose one answer.
www.aou-q8.com
a. the distance the signal has to travel & the signal's speed
b. the signal's speed
c. the distance the signal has to travel
Correct
Marks for this submission: 1/1.
13
Marks: 1
Protocol is needed to establish a common language and to control the exchange of data.
Answer:
True False FALSE
Incorrect
Marks for this submission: 0/1.
14
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a bit
rate of 1 Mbps.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
www.aou-q8.com
Marks: 1
Wide Area Networks (WANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Correct
Marks for this submission: 1/1.
16
Marks: 1
Router generally works at the edge of a LAN rather than within it.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
Document abstract's summarizes the main points of the text.
Answer:
True False
Correct
Marks for this submission: 1/1.
18
Marks: 1
Local Area Networks (LANs) cover small areas such as a home.
Answer:
True False
Correct
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Marks for this submission: 1/1.
19
Marks: 1
A well-structured document usually contains a number of clues about its contents. Skimming is
the practice of finding and using these clues. These are:
Choose one answer.
a. Visual clues such as a document’s title, headings; and verbal clues such as the introduction
and conclusion subheadings
b. Visual clues such as introduction and conclusion subheadings
c. Verbal clues such as a document’s title, headings
Correct
Marks for this submission: 1/1.
20
Marks: 1
Wide Area Networks (WANs) cover small areas such as a home.
Answer:
True False
Correct
Marks for this submission: 1/1.
Quiz
1
Marks: 1
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Waveforms with a periodically repeating curve of this general shape are known as -----------.
Choose one answer.
a. sinewaves
b. electromagnetic spectrum
c. frequency
d. wave cycle
Correct
Marks for this submission: 1/1.
2
Marks: 1
Propagation delay depends on a number of factors, including the distance the signal has to
travel and the signal's speed.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
One of the main reasons for Ethernet success lies with the decision to hide the standard.
Answer:
www.aou-q8.com
True False
Correct
Marks for this submission: 1/1.
4
Marks: 1
To convey data from one point to another we need to represent the data by means of a signal.
Answer:
True False
Correct
Marks for this submission: 1/1.
5
Marks: 1
Wireless network is a network that transmit data through the air (or space) using radio waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
6
Marks: 1
When a signal travels from one device to another it has some problems effected in called ----------.
Choose one answer.
a. distortion
b. attenuation
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c. attenuation & distortion
Correct
Marks for this submission: 1/1.
7
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a
range of approximately 10 m.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
The storage capacity of a floppy disk is several gigabytes.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
Throughput is a term that describes the maximum data rate of a WiFi network.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
10
Marks: 1
Frequency is the number of wave cycles it completes in a single second, measured in Hertz
(Hz).
Answer:
True False
Correct
Marks for this submission: 1/1.
11
Marks: 1
A Maximum data rate for which a communication link can support is
________________________
Choose one answer.
a. Bandwidth
b. Bit rate
c. Data rate
Correct
Marks for this submission: 1/1.
12
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a bit
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rate of 1 Mbps.
Answer:
True False FALSE
Incorrect
Marks for this submission: 0/1.
13
Marks: 1
In a supermarket, Bar codes are data items used as information at checkout Terminals.
Answer:
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
A WiFi network can operate in an ad hoc mode or an infrastructure mode.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
To convey data from one point to another we need to represent the data by means of a -------.
Choose one answer.
a. signal
www.aou-q8.com
b. protocol
c. modem
d. network
Correct
Marks for this submission: 1/1.
16
Marks: 1
There is no an upper limit on the number of active devices that can communicate in a piconet.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
Low-frequency waves can travel further than high-frequency waves.
Answer:
True False
Correct
Marks for this submission: 1/1.
18
Marks: 1
Document abstract's contains document references.
www.aou-q8.com
Answer:
True False
Correct
Marks for this submission: 1/1.
19
Marks: 1
------------ increases the practical distance between nodes by regenerating the signal and
passing it on.
Choose one answer.
a. A repeater
b. An interface
c. A fiber optical cable
Correct
Marks for this submission: 1/1.
20
Marks: 1
A WiFi can be used to boost the signal power.
Answer:
True False
Correct
Marks for this submission: 1/1.
Quiz
www.aou-q8.com
1
Marks: 1
Wireless communication includes:
Choose one answer.
a. Cable TV
b. Radio links and infrared
c. telephone exchanges
Correct
Marks for this submission: 1/1.
2
Marks: 1
One of the main reasons for Ethernet success lies with the decision to hide the standard.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
Printer is controlled by a processor and it has memory.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
4
Marks: 1
Node is -----------.
Choose one answer.
a. a computer
b. a printer
c. a computer, a printer or a server
d. a server
Correct
Marks for this submission: 1/1.
5
Marks: 1
Infrastructure mode network does not need central control.
Answer:
True False FALSE
Incorrect
Marks for this submission: 0/1.
6
www.aou-q8.com
Marks: 1
A DVD is a form of magnetic storage.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
Each node is assigned an identity number known as its PoP address.
Answer:
True False
Correct
Marks for this submission: 1/1.
8
Marks: 1
Because of the low power output of a Bluetooth transmitter, communication is limited to a bit
rate of 100 Mbps.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
Propagation delay depends on a number of factors, including the distance the signal has to
travel and the signal's speed.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
10
Marks: 1
The works of the buffer is -----------.
Choose one answer.
a. for holding the data in the printer before being processed
b. for processing data
c. for holding the data in the printer before being processed & for processing data
Correct
Marks for this submission: 1/1.
11
Marks: 1
Wide Area Networks (WANs) connect together a number of nodes within a single building or
group of buildings situated close to each other.
Answer:
True False
Correct
Marks for this submission: 1/1.
12
Marks: 1
Active reading involves reading in a disciplined manner with some purpose, and thinking
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continually about what you are reading.
Answer:
True False
Correct
Marks for this submission: 1/1.
13
Marks: 1
Attenuation is when a signal gets weaker the further it travels, because some of its energy is
absorbed by the transmission medium.
Answer:
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
An amplifier can be used to boost the signal power.
Answer:
True False
Correct
Marks for this submission: 1/1.
15
Marks: 1
Wide Area Networks (WANs) connect together two or more LANs that are geographically
separated.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
16
Marks: 1
PDA stands for Personal Digital Assistant.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
When you click the Print icon on your computer’s word-processor screen for print page , the
simple ICT consists of:
Choose one answer.
a. User, Communication link, Printer and computer
b. Printer and computer
c. Communication link
d. User
Correct
Marks for this submission: 1/1.
www.aou-q8.com
18
Marks: 1
All frames include the MAC address of -----------.
Choose one answer.
a. the destination node
b. the destination node & the sending node
c. the sending node
Correct
Marks for this submission: 1/1.
19
Marks: 1
In ad hoc mode, the WiFi network is isolated from any other network.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
Distortion is when a signal gets weaker the further it travels, because some of its energy is
absorbed by the transmission medium.
Answer:
True False
www.aou-q8.com
Correct
Marks for this submission: 1/1.
Quiz 1
Marks: 1
Every WiFi station does not require a MAC address.
Answer:
True False
Correct
Marks for this submission: 1/1.
2
Marks: 1
A WiFi network can operate in an ad hoc mode or an infrastructure mode.
Answer:
True False
Correct
Marks for this submission: 1/1.
3
Marks: 1
Away to overcome competition to send frames in bus LANs is to stop sending all frame to every
node (broadcast) by -----------.
Choose one answer.
a. abstraction
b. using bus topology
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c. separate the network into segments
d. using star topology
Correct
Marks for this submission: 1/1.
4
Marks: 1
Smart home is by integrating the control of home systems, for example:
Choose one answer.
a. Lighting, Entertainment, Security and Heating
b. Security and Heating
c. Lighting and Entertainment
Correct
Marks for this submission: 1/1.
5
Marks: 1
In infrastructure mode, access points are mobile.
Answer:
True False
Correct
www.aou-q8.com
Marks for this submission: 1/1.
6
Marks: 1
Attenuation does not depend on the type of the medium it is traveling through.
Answer:
True False
Correct
Marks for this submission: 1/1.
7
Marks: 1
To convey data from one point to another we need to represent the data by means of a -------.
Choose one answer.
a. protocol
b. modem
c. signal
d. network
Correct
Marks for this submission: 1/1.
8
www.aou-q8.com
Marks: 1
Wide Area Networks (WANs) cover small areas such as a home.
Answer:
True False
Correct
Marks for this submission: 1/1.
9
Marks: 1
A Repeater increases the practical distance between nodes by regenerating the signal and
passing it on.
Answer:
True False
Correct
Marks for this submission: 1/1.
10
Marks: 1
A well-structured document usually contains a number of clues about its contents. Skimming is
the practice of finding and using these clues. These are:
Choose one answer.
a. Verbal clues such as a document’s title, headings
b. Visual clues such as a document’s title, headings; and verbal clues such as the introduction
and conclusion subheadings
c. Visual clues such as introduction and conclusion subheadings
www.aou-q8.com
Correct
Marks for this submission: 1/1.
11
Marks: 1
One of the main reasons for Ethernet success lies with the decision to hide the standard.
Answer:
True False
Correct
Marks for this submission: 1/1.
12
Marks: 1
A USB memory stick holds much more than a floppy disk.
Answer:
True False
Correct
Marks for this submission: 1/1.
13
Marks: 1
Antennas can be designed to be directional so that the signal power is directed into a beam,
which allows the signal to travel less for the same power.
Answer:
True False
Correct
Marks for this submission: 1/1.
14
Marks: 1
www.aou-q8.com
------------ increases the practical distance between nodes by regenerating the signal and
passing it on.
Choose one answer.
a. A repeater
b. A fiber optical cable
c. An interface
Correct
Marks for this submission: 1/1.
16
Marks: 1
There is no relationship between reliability, cost, capacity, and speed.
Answer:
True False
Correct
Marks for this submission: 1/1.
17
Marks: 1
The abstract is usually presented after the main text.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com
18
Marks: 1
Distortion can be caused by mobile.
Answer:
True False
Correct
Marks for this submission: 1/1.
19
Marks: 1
Network interface card (NIC) provides the interface between the node and the software.
Answer:
True False
Correct
Marks for this submission: 1/1.
20
Marks: 1
Personal Area Networks (PANs) connect together two or more LANs that are geographically
separated.
Answer:
True False
Correct
Marks for this submission: 1/1.
www.aou-q8.com

Examples:
o round 3482 to 3 significant figures  3480 (we chose to round down since 3482 is closer to 3480
than 3490)
o round 3482 to 2 significant figures  3500 (we chose to round up since 3482 is closer to 3500 than
3400)
o round 2.14565879 x 108 to 4 significant figures  2.145 x 108
o round 2.14565879 x 108 to 3 significant figures  2.15 x 108
o round 299 792 458 m/s to 4 significant figures  299 800 000
o round 299 792 458 m/s to 3 significant figures  300 000 000
Working with scientific notation using the Windows calculator:

Brackets used to ensure that the calculation is done in the right order.

add the powers when multiplying two scientific notation powers:
(3 x 104) x (2 x 103)
= 3 x 2 x104x 103
=3 x2 x (10 x10 x 10 x 10) x (10 x10 x 10) since 104x 103= 10(4+3) =10 x 10x 10 x 10 x 10 x 10 x 10 = 107
= 3 x 2 x10(4+3)
= 6x 107
 kHz : 1000 wave cycles every second
 MHz (megahertz – 1 000 000 cycles per second)
 GHz (gigahertz – 1 000 000 000 cycles per second.)

Example:
Estimate how many times faster the data rate of the original Ethernet standard (10 Mbps) is, compared to the data
rate of a modern standard dial-up modem of 56 kbps. (Hint: round down the dial-up modem rate to 50 kbps.)
www.aou-q8.com
10 Mbps = 10 000 000 bps
50 kbps = 50 000 bp
10 000 000 = 200
50 000
So the first commercial Ethernet network was about 200 times faster than a modern 56 kbps modem dial-up
connection.
ICTs = Information and Communication Technologies System.
ISP = Internet Service Provider.
RAM= Random Access Memory.
USB=Universal Serial Bus.
Mbps= Megabitspersecond.
1 KB=(kilobytes)= 1024 bytes.
1 MB=(megabyte)=1024 X 1024.
1 GB=(Gigabyte)= 1024 X 1024 X 1024.
CD-ROM= Compact Disk Read Only Memory.
CD-R= CD-Recordable.
CD-RW=CD-Rewritable.
DVD=Digital Versatile Disk.
PDAs= Personal Digital Assistants System.
PIN=Personal Identification Numbers.
RFID= Radio Frequency Identity.
PANs=Personal Area Networks System.
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LANs=Local Area Networks System.
WANs=Wide Area Networks System.
NIC=Network Interface Card.
MAC= Media Access Control.
IEEE= Institute of Electrical and Electronics Engineers.
ISM= Industrial, Scientific and Medical.
WiFi=Wireless Fidelity.
AP=wireless Access point.
SIG= Special Interest Group.
PEG =Photographic Experts Group.