Download CCNA 1 v3.0

CCNA 1 v3.1
Module 3 Review
Which combinations of charges will be
repelled by electric force?
• positive and positive
• negative and negative
2
What characteristics are specified by
10BaseT?
• 10 megabits per second data rate
• baseband transmission
• twisted pair cable
3
What are two benefits of coaxial cable
within a LAN environment?
• less expensive than fiber
• requires fewer repeaters than UTP
4
What wireless standards increased
transmission capabilities to 11 Mbps?
• 802.11b
5
When working with computer
circuitry, what should
technicians try to avoid?
• electrostatic discharge
6
What occurs when a voltage source
is connected to a completed
electrical circuit?
• electrons will flow from the
negative terminal to the positive
terminal
7
How is the current determined if the
voltage and resistance of an
electrical circuit are known?
• Divide the voltage by the
resistance.
8
What is the unit of measurement
for electrical current?
• ampere
9
What is one of the biggest sources
of connection problems in coaxial
cable installations?
• poor shield connections
10
What materials severely restrict
the flow of electrons?
• insulators
11
What does UTP cable rely on to
reduce signal degradation caused
by EMI and RFI?
• cancellation
12
What 2 cable connectors are used to
connect a cable from a router's
console port to a PC?
• RJ-45
• DB-9
13
What is the maximum transmission
rate of a device compliant with
the basic 802.11a standard?
• 54 Mbps
14
What is the term that refers to
electrical pressure?
• voltage
15
What is the most important property
of the class of materials known as
semiconductors?
• A semiconductor has the ability to
precisely control the flow of
electrons.
16
Which type of cable has the color of the
wires in pins #1 and #2 on one end
appear on the other end at pins #3 and
#6, and vice-versa?
• crossover cable
17
Which adapter is used to connect a
cable from the console port of the
router to a PC?
• RJ-45 to DB-9
18