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CHAPTER 2: NETWORKS AND THE INTERNET
Multiple Choice:
1.
What does the Open Systems Interconnect (OSI) model do?
A. Summarizes the history of network communications
B. Shows how a network uses seven layers to protect itself against viruses and other threats
C. Describes how information moves from one computer to another across a network
D. Serves as a guide to network management
Answer: C
2.
Reference: The OSI Model
Difficulty: moderate
Which of the following is a true statement about the OSI model layers?
A. The layers cannot communicate with one another.
B. Any layer can communicate directly with any other layer.
C. Any layer can communicate only with the layer directly above or below it.
D. Any layer can communicate only with the layer above it.
Answer: C
3.
Reference: The OSI Model
Difficulty: moderate
Which of the following is NOT true about a MAC address?
A. A MAC address functions at the Data Link layer in the OSI model.
B. Each MAC address is unique to a network interface card (NIC).
C. You enter a MAC address in a browser to reach a Web site.
D. A MAC address is represented by a six-byte hexadecimal number.
Answer: C
4.
Reference: Network Basics
Difficulty: moderate
Which of the following identifies a computer or device on a TCP/IP network?
A. IP address
B. Media Access Control address
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C. Network address
D. TCP address
Answer: A
5.
Reference: Network Basics
Difficulty: easy
Which of the following is NOT true of DNS servers?
A. They translate domain names into IP addresses.
B. They synchronize data with other DNS servers.
C. There is a primary server for each domain.
D. They are classified as either primary or secondary.
Answer: D
6.
Reference: DNS Servers
Difficulty: moderate
There are three devices that can help you connect multiple computers together. Which of the following is
NOT one of those devices?
A. Hub
B. Switch
C. Router
D. Modem
Answer: D
7.
Reference: The Physical Connection: Local Networks
Difficulty: moderate
Which of the following is an Internet connection type generally used only in telecommunications?
A. DS0
B. ISDN
C. T3
D. OC12
Answer: D
8.
Reference: The Physical Connection: Internet
Difficulty: moderate
Which of the following is NOT an agreed upon method of communication between computers?
A. TCP
B. IP
C. UDP
D. T1
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Answer: D
9.
Reference: Data Transmission
Difficulty: easy
Which of the following is NOT true about the Internet?
A. It is one large network.
B. It is made up of many networks connected into transmission lines called backbones.
C. It works the same way as a local network.
D. Individual computers can connect to it using an ISP.
Answer: A
10.
Reference: How the Internet Works
Difficulty: easy
Which of the following IP addresses is an example of a private IP address?
A. 64.233.161.99
B. 204.176.40.19
C. 137.99.25.179
D. 10.127.100.1
Answer: D
11.
Reference: IP Addresses
Difficulty: moderate
Which of the following DOS commands is NOT considered a basic network utility?
A. IPConfig
B. attrib
C. ping
D. tracert
Answer: B
12.
Reference: Basic Network Utilities
Difficulty: easy
Which of the following is NOT a characteristic of a firewall?
A. It can consist of hardware, software, or both.
B. It hides your network.
C. One of its techniques is packet filtering.
D. It is a barrier between your network and the rest of the Internet.
Answer: B
Reference:
Other Network Devices
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Difficulty: moderate
Fill in the Blank:
13.
A(n) ____________ is a card that allows a computer to connect to another computer or to a network.
Answer: Network Interface Card (NIC)
14.
Reference: The Physical Connection: Internet
Difficulty: moderate
Reference: IP Addresses
Difficulty: easy
Reference: Basic Network Utilities
Difficulty: easy
The purpose of a ______________ is to hide your network from the outside world.
Answer: proxy server
Reference: Other Network Devices
Matching:
20.
Difficulty: easy
____________, a commonly used DOS command, sends a test packet to determine whether a machine is
reachable.
Answer: Ping
19.
Reference: The Physical Connection: Local Networks
A(n) ____________ is a special IP number (127.0.0.1) that designates the machine you are on regardless of
its IP address.
Answer: loop back address
18.
Difficulty: moderate
The basic purpose of a cable is to transmit ____________ from one machine to another.
Answer: packets
17.
Reference: DNS Servers
The number of bits that a cable can transmit is called ____________.
Answer: bandwidth
16.
Difficulty: easy
The ____________ is the method that a secondary DNS server uses to update its information from the
primary DNS server.
Answer: zone transfer
15.
Reference: Network Basics
Match the following terms to their meanings:
I.
Application
A. Connects the entity to the transmission media
II. Presentation
B. Provides end-to-end communication control
III. Session
C. Handles problems that are not communication issues
IV. Transport
D. Converts the information
V. Network
E. Provides error control between adjacent nodes
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Difficulty: easy
VI. Data link
F. Routes the information in the network
VII. Physical
G. Provides different services to the applications
Answer: G D C B F E A
21.
Difficulty: hard
Match the following terms to their meanings:
I.
Domain Name Server (DNS) A. Holds duplicate URL/IP information
II. Primary DNS
B. Sends changes from one server to another
III. Secondary DNS
C. Holds the master copy of URL/IP information
IV. Zone transfer
D. Translates domain names into IP addresses
Answer: D C A B
22.
Reference: The OSI Model
Reference: DNS Servers
Difficulty: moderate
Match the following cable types and their uses:
I.
Analog
A. Voice transmission
II. Up to 20 MHz /16 Mbps B. Telephone
III. 100 MHz/100 Mbps
C. High-speed networks
IV. 250 MHz/1,000 Mbps
D. Standard speed networks
Answer: B A D C
23.
Difficulty: moderate
Match the following terms to their meanings:
I.
TCP
A. Protocol that specifies the format and addressing scheme of a packet
II. IP
B. Protocol used to extract error and control messages
III. UDP
C. Protocol that establishes a connection for the exchange of data
IV. ICMP
D. Protocol that does not guarantee delivery of packets
Answer: C A D B
24.
Reference: The Physical Connection: Local Networks
Reference: Data Transmission
Match the following code series message to their meaning:
I.
100 series
A. Messages refer to client errors
II. 200 series
B. Messages are simply informational
III. 300 series
C. Messages refer to server errors
IV. 400 series
D. Messages indicate successful connections
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Difficulty: moderate
V. 500 series
Answer: B D E A C
25.
E. Messages indicate that the Web site has moved
Reference: Uniform Resource Locators
Difficulty: hard
Match the following terms to their meanings:
I.
Ping
A. Shows how many hops a packet needs to reach a host and the length of time
II. flag
B. Gives information about your connection to the Internet
II. IPConfig
C. Used to send a test packet and determine whether an IP address is reachable
III. Tracert
certain way
D. Parameters that can be passed to commands to make the computer behave in a
Answer: C D B A
Reference: Basic Network Utilities
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Difficulty: easy