Chapter 7

Question 1

Telephone networks are fundamentally different from computer networks.

Answer 1

True

Question 2

Increasingly, voice, video, and data communications are all based on Internet technology.

Answer 2

True

Question 3

To create a computer network, you must have at least two computers.

Answer 3

True

Question 4

An NOS must reside on a dedicated server computer in order to manage a network.

Answer 4

False

Question 5

A hub is a networking device that connects network components and is used to filter and forward data to specified destinations on the network.

Answer 5

False

Question 6

In a client/server network, a network server provides every connected client with an address so it can be found by others on the network.

Answer 6

True

Question 7

Central large mainframe computing has largely replaced client/server computing.

Answer 7

False

Question 8

Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching.

Answer 8

False

Question 9

Mobile search makes up approximately 10% of all Internet searches.

Answer 9

False

Question 10

Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms.

Answer 10

True

Question 11

In blogging, a trackback is a list of entries in other blogs that refer to a post in the first blog.

Answer 11

True

Question 12

Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.

Answer 12

True

Question 13

Fiber-optic cable is more expensive and harder to install than wire media.

Answer 13

True

Question 14

The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes.

Answer 14

False

Question 15

The Domain Name System (DNS) converts domain names to IP addresses.

Answer 15

True

Question 16

VoIP technology delivers voice information in digital form using packet switching.

Answer 16

True

Question 17

Web 3.0 is a collaborative effort to add a layer of meaning to the existing Web in order to reduce the amount of human involvement in searching for and processing Web information.

Answer 17

True

Question 18

In a large company today, you will often find an infrastructure that includes hundreds of small LANs linked to each other as well as to corporate-wide networks.

Answer 18

True

Question 19

TCP/IP was developed in the 1960s to enable university scientists to transmit data from computer to computer.

Answer 19

False

Question 20

RFID technology is being gradually replaced by less costly technologies such as WSNs.

Answer 20

False

Question 21

) The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n):

A) hub.

B) switch.

C) router.

D) NIC.

Answer 21

B) Switch

Question 22

The Internet is based on which three key technologies?

A) TCP/IP, HTML, and HTTP

B) TCP/IP, HTTP, and packet switching

C) Client/server computing, packet switching, and the development of communications standards for linking networks and computers

D) Client/server computing, packet switching, and HTTP

Answer 22

C) Client/server computing, packet switching, and the development of communications standards for linking networks and computers.

Question 23

The method of slicing digital messages into parcels, transmitting them along different communication paths, and reassembling them at their destinations is called:

A) multiplexing.

B) packet switching.

C) packet routing.

D) ATM.

Answer 23

B) packet switching

Question 24

24) The telephone system is an example of a ________ network.

A) peer-to-peer

B) wireless

C) packet-switched

D) circuit-switched

Answer 24

D) circuit-switched

Question 25

25) Which of the following is not a characteristic of packet switching?

A) Packets travel independently of each other.

B) Packets are routed through many different paths.

C) Packet switching requires point-to-point circuits.

D) Packets include data for checking transmission errors.

Answer 25

C) Packet switching required point-to-point circuits.

Question 26

26) In TCP/IP, IP is responsible for:

A) disassembling and reassembling of packets during transmission.

B) establishing an Internet connection between two computers.

C) moving packets over the network.

D) sequencing the transfer of packets.

Answer 26

A) disassembling and reassembling of packets during transmission

Question 27

27) In a telecommunications network architecture, a protocol is:

A) a device that handles the switching of voice and data in a local area network.

B) a standard set of rules and procedures for control of communications in a network.

C) a communications service for microcomputer users.

D) the main computer in a telecommunications network.

Answer 27

B) a standard set of rules and procedures for control of communications in a network.

Question 28

28) What are the four layers of the TCP/IP reference model?

A) Physical, application, transport, and network interface

B) Physical, application, Internet, and network interface

C) Application, transport, Internet, and network interface

D) Application, hardware, Internet, and network interface

Answer 28

C) Application, transport, Internet, and network interface

Question 29

29) Which signal types are represented by a continuous waveform?

A) Laser

B) Optical

C) Digital

D) Analog

Answer 29

D) Analog

Question 30

30) To use the analog telephone system for sending digital data, you must also use:

A) a modem.

B) a router.

C) DSL.

D) twisted wire.

Answer 30

A) a modem.