Deck 7: Computer Networks, the Internet, and the Worldwide Web

Question 1

The ARQ (automatic repeat request) algorithm is the basis for all data link control protocols in current use.

Answer 1

True

Question 2

Internet Protocol (IP) is an inherently unreliable communication channel.

Answer 2

True

Question 3

A single ISP would very likely be able to connect a single campus to every other computer in the world.

Answer 3

False

Question 4

Groupware is also known as electronic commerce.

Question 5

It is the job of the network layer protocols to create a "program-to-program" delivery service, in which messages are moved from a specific program at the source to a specific program at the destination.

Question 6

The bus topology connects the network nodes in a circular fashion.

Question 7

A mutually agreed upon set of rules, conventions, and agreements for the efficient and orderly exchange of information is called a protocol.

Question 8

A digital subscriber line signal uses a different set of frequencies, and transmits analog rather than digital signals.

Question 9

A local Internet service provider (ISP) is called an Internet backbone.

Question 10

Bridges and switches are the most widely used technique for constructing LANs.

Question 11

High-speed communications are necessary to support video on demand.

Question 12

The Internet protocol stack has six total layers.

Question 13

During the early stages of network development, the only information exchanged was text such as email, database records, and technical papers.

Question 14

A URL is the worldwide identification of a Web page located on a specific host computer on the Internet.

Question 15

The logical link control protocols determine how to arbitrate ownership of a shared line when multiple nodes want to send at the same time.

Question 16

Internet Protocol (IP) is a transport layer protocol.

Question 17

A bulletin board is a shared public file where anyone can post messages and everyone is free to browse and read the postings of others.

Question 18

A gateway provides routing between different wide area networks.

Question 19

A digital subscriber line (DSL) uses the same wires that carry regular telephone signals.

Question 20

The Ethernet uses the ring topology.

Question 21

The most popular application of networks in the past 30 years has been email.

Question 22

The ____ layer protocols are the rules for implementing the end-user services provided by a network.

A) transport
B) application
C) network
D) data link

Question 23

It is the job of the ____ layer protocols to deliver a message from the site where it was created to its ultimate destination.

A) physical
B) data link
C) application
D) network

Question 24

A(n) ____ link is also known as a uniform resource locator.

A) hypertext
B) http
C) transport
D) Ethernet

Question 25

The ____ layer protocols can be thought of as creating an error-free "message pipe," in which messages go in one end and always come out the other end correct and in the proper order.

A) application
B) transport
C) data link
D) physical

Question 26

____ is a way to move files around the network quickly and easily.

A) Telnet
B) DNS
C) FTP
D) TCP/IP

Question 27

A(n) ____ occurs when two users transmit a line at exactly the same time.

A) collision
B) interruption
C) protocol
D) transfer

Question 28

Ethernet cables technically have no limit in length.

Question 29

A newsgroup is a specialized bulletin board that is associated with a special area of interest.

Question 30

Assigning port numbers to programs and remembering which program goes with which port is a part of the ____ layer protocols.

A) physical
B) data link
C) network
D) transport

Question 31

Resource sharing refers to the ability to share logical resources, such as software and information, but not physical sources, such as printers.

Question 32

____ is a software package that allows users to log on remotely to another computer and use it as though it were their own local machine.

A) Telnet
B) DNS
C) FTP
D) TCP/IP

Question 33

In the TCP/IP protocol hierarchy, the ____ layer protocols are the rules governing the exchange of binary digits across a physical communication channel.

A) network
B) transport
C) data link
D) physical

Question 34

The ____ topology has a single central node that is connected to all other sites.

A) star
B) ring
C) helix
D) bus

Question 35

The term ____ refers to any communication link with a transmission rate exceeding 256,000 bps.

A) bandwidth
B) ISP
C) broadband
D) dial-up

Question 36

A(n) ____ is a node that contains massive amounts of information that can be electronically searched for specific facts or documents.

A) groupware
B) distributed database
C) collaborative software
D) information utility

Question 37

A(n) ____ is an information block with a fixed maximum size that is transmitted through the network as a single unit.

A) hypertext document
B) URL
C) switch
D) packet

Question 38

____ are the individual computers on a computer network.

A) Modems
B) Nodes
C) Circuits
D) Ports

Question 39

The ARQ algorithm utilizes acknowledgement messages, which contain the sequence number of the correctly received packet.

Question 40

The style of computing wherein some nodes provide services while the remaining nodes are users of those services is called ____ computing.

A) remote
B) mobile
C) real-time
D) client-server

Question 41

A(n) ____ restructures a binary signal into its analog representation.

A) modem
B) demodulator
C) encoder
D) emulator

Question 42

The ____ is a nonprofit organization that enforces network protocol standards.

A) ARAP
B) Protocol Agency
C) Internet Society
D) IEEE

Question 43

The ____ problem is the need to identify the start and end of a message.

A) addressing
B) framing
C) networking
D) transport

Question 44

A(n) ____ is a device that amplifies and forwards a signal.

A) repeater
B) forwarder
C) hub
D) amplifier

Question 45

Bluetooth is an example of a(n) ____.

A) wireless local access network
B) client-server
C) wireless wide-area access network
D) wide area network

Question 46

Which of the following is an alternative to DSL for broadband communications?

A) cable modem
B) Ethernet
C) router
D) ISP

Question 47

What device can connect individual LANS to a wide area network?

A) bridge
B) hub
C) modem
D) router

Question 48

Asymmetric DSL lines usually provide ____ bandwidth coming into the computer than going out.

A) greater
B) less
C) more reliable
D) less reliable

Question 49

Most wide area networks use a store-and-forward, ____ technology to deliver messages.

A) collaborative
B) Ethernet
C) packet-switched
D) data-link

Question 50

When you dial a telephone number, the ____ between caller and callee lasts for the duration of the call, and when you hang up it is terminated.

A) rapport
B) circuit
C) resistance
D) transmitter