Deck 6: Networks

Question 1

Twisted-pair wire is the least-used form of communications wiring.

Answer 1

False

Question 2

The network interface card typically houses the LAN's network operating system.

Answer 2

False

Question 3

Network interface cards are special adapters that link an individual device to the communications medium on a local area network.

Answer 3

True

Question 4

Extranets offer limited accessibility to the intranets of participating companies.

Question 5

An extranet is a network that uses Internet technologies and is designed to serve the information needs of a single organization.

Question 6

Systems that use digital subscriber lines (DSL) do not require modems.

Question 7

Cladding is the coating that surrounds fiber-optic cables and prevents light from leaking out of the fiber.

Question 8

An intranet is a network that uses Internet technologies and is designed to serve the information needs of a single organization.

Question 9

The U.S. public telephone system was designed as an analog network to carry voice signals.

Question 10

Intranets support discovery, communication, and collaboration inside an organization.

Question 11

A domain name is the official name assigned to an Internet site, consisting of multiple parts, separated by dots, which are translated from right to left in locating the site.

Question 12

An Internet service provider is a company that offers Internet connections for a fee.

Question 13

Digital signals have two parameters: frequency and amplitude.

Question 14

Currently, ATM networks operate only on fiber-optic cable.

Question 15

Digital signals are continuous waves that transmit information by altering the characteristics of the waves.

Question 16

Cable media use wires or cables to transmit data and information.

Question 17

The Internet is a global network of computer networks.

Question 18

A local area network connects two or more communicating devices in a limited geographical area.

Question 19

Internet kiosks are computer terminals located in public places like libraries and airports.

Question 20

Wide-area networks have a large capacity, and they typically use a single communications channel.

Question 21

The World Wide Web is a system with universally accepted standards for storing, retrieving, formatting, and displaying information via a client/server architecture.

Question 22

The hypertext transport protocol (HTTP) is the communications standard used to transfer pages across the World Wide Web portion of the Internet.

Question 23

Commercial portals are intended for broad audiences and offer fairly routine content.

Question 24

The rightmost part of an Internet name is the top-level specification, or the zone.

Question 25

A major problem of the discovery applications of networks is the huge amount of information available.

Question 26

The components of a local area network include which of the following?

A) File server
B) Client computers
C) Wireline or wireless communications media
D) Network interface cards
E) All of the above

Question 27

Uniform resource locators (URLs) point to the address of a specific resource or site on the Web.

Question 28

Industrywide portals are intended for broad audiences and offer fairly routine content.

Question 29

Uniform resource locators (URLs) are software applications through which users access the Web.

Question 30

E-learning is conducted only in virtual classrooms, where all coursework is completed online.

Question 31

Refer to IT's About Business 6.5: Yahoo! CEO Marissa Mayer Bans Telecommuting. The cost savings of telecommuting to both the employees and employers universally outweighs the benefits of working in the office.

Question 32

With Voice-over-IP, every call opens up a dedicated circuit for the duration of the call.

Question 33

Virtual universities are online universities from which students take classes from home or at an off-site location, via the Internet.

Question 34

The quality of automatic translation of Web pages is usually just as good as human translation.

Question 35

Which of the following are advantages of computer networks?

A) They enable organizations to be more flexible.
B) They enable companies to share hardware, computer applications, and data.
C) They enable geographically dispersed employees to work together.
D) They provide a critical link between businesses and their customers.
E) All of the above

Question 36

Metasearch engines search several engines at once and integrate the findings of the various search engines.

Question 37

_____ refers to the range of frequencies available in any communications channel.

A) Protocol
B) Broadband
C) Capacity
D) Narrowband
E) Bandwidth

Question 38

Employees who telecommute have generally found that the experience enhances their careers.

Question 39

Electronic mail is the largest-volume application running over the Internet.

Question 40

Refer to IT's About Business 6.1: Studio
G. When scaling infrastructure, it is important to not only consider current needs, but also consider possible future needs.

Question 41

Which transmission technology is an interface standard for transporting digital signals over fiber-optic lines that enables the integration of transmissions from multiple vendors?

A) Digital subscriber line
B) Asynchronous transfer mode
C) Synchronous optical network
D) T-carrier system
E) ISDN

Question 42

A _____ connects dissimilar networks.

A) Router
B) Network interface card
C) Bridge
D) Gateway
E) File server

Question 43

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 the control of communications in a network.
C) A communications service for the connection of devices in a local area network.
D) The main communications channel in a wide-area network.
E) Synonymous with network interface card.

Question 44

The cable medium with the highest bandwidth is:

A) Twisted-pair wire
B) Coaxial cable
C) Fiber-optic cable
D) Cellular radio
E) Copper cable

Question 45

Data are sent through a fiber-optic cable by a(n) _______.

A) Optical switch
B) Electromagnetic switch
C) Laser
D) Multiplexer
E) Optical modem

Question 46

_____ are hardware devices that support data transmission and reception across a telecommunications system.

A) Integrated services digital networks
B) Digital subscriber lines
C) Communications channels
D) Integrated circuits
E) Communications processors

Question 47

The part of a network that handles the major traffic is the ________.

A) Front end
B) Network interface
C) Multiplexer
D) Backbone
E) Front end processor

Question 48

In order to ensure that computers developed by different manufacturers can communicate, _____ have been developed.

A) Protocols
B) Client/server architectures
C) WANs
D) Application software packages
E) Developmental architectures

Question 49

Which data transmission technology requires fiber-optic cable, can transmit up to 2.5 gigabits per second, and is more expensive than DSL?

A) Digital subscriber line
B) Asynchronous transfer mode
C) Synchronous optical network
D) T-carrier system
E) ISDN

Question 50

Which of the following is not a communications channel?

A) Fiber-optic cable
B) Satellite transmission
C) Twisted-pair wire
D) Integrated circuits
E) Cellular radio

Question 51

Which of the following is a digital transmission system that defines circuits that operate at different rates, all of which are multiples of the basic 64 Kbps used to transport a single voice call?

A) Digital subscriber line
B) Asynchronous transfer mode
C) Synchronous optical network
D) T-carrier system
E) ISDN

Question 52

Which of the following enables users to send data across sometimes unreliable networks?

A) Ethernet
B) TCP/IP
C) Protocols
D) Digital subscriber lines
E) Integrated services digital network

Question 53

Which of the following is not a characteristic of twisted-pair wire?

A) Inexpensive
B) Easy to work with
C) Subject to interference from other electrical sources
D) Secure transmissions
E) None of the above

Question 54

_____ signals convey information in wave form, whereas _____ signals convey information in binary form.

A) Analog, packet
B) Analog, digital
C) Digital, packet
D) Digital, analog
E) Packet, analog

Question 55

A _____ sends messages through several connected LANs or to a wide-area network.

A) Router
B) Network interface card
C) Bridge
D) Gateway
E) File server

Question 56

A(n) _____ connects two or more devices in a limited geographical area.

A) Local area network
B) Wide-area network
C) Personal area network
D) Enterprise network
E) Value added network

Question 57

In TCP/IP, IP is responsible for:

A) Disassembling and reassembling of packets during transmission.
B) Establishing the Internet connection between two computers.
C) Moving packets over the network.
D) Sequencing the transfer of packets across the network.
E) Error checking.

Question 58

The function of _____ is to convert digital signals to analog signals and vice-versa.

A) Modems
B) Multiplexers
C) Front-end processors
D) Servers
E) Clients

Question 59

Which of the following is not a component of a local area network?

A) File server
B) Client computers
C) Bridge
D) Network interface cards
E) All of the above

Question 60

A _____ allows a device to physically connect to a local area network's communications medium.

A) File server
B) Network interface card
C) Network operating system
D) Communications channel
E) Gateway

Question 61

Internet service providers connect to one another through _____.

A) Internet connection points
B) Common carrier connection points
C) Network access points
D) Network connection points
E) An extranet

Question 62

Consider this domain name, HYPERLINK "http://www.business.gsu.edu"www.business.gsu.edu. The "gsu" is the __________.

A) Top-level domain
B) Name of the organization
C) URL
D) Name of the specific computer
E) Address of the Webmaster

Question 63

_____ portals offer content for diverse communities and are intended for broad audiences.

A) Industrywide
B) Personal
C) Affinity
D) Corporate
E) Commercial

Question 64

Many organizations have implemented corporate portals for which of the following reasons?

A) To cut costs
B) To free up time for busy managers
C) To improve profitability
D) To offer customers self-service opportunities
E) All of the above

Question 65

Which of the following statements concerning packet switching is not true?

A) Packets contain a sequence number.
B) Packets are routed through different paths.
C) Packets require dedicated circuits.
D) Packets use TCP/IP to carry their data.
E) Packets contain destination addressing.

Question 66

A(n) _____ is a network designed to serve the internal informational needs of a single organization.

A) Global network
B) Extranet
C) Internet
D) Intranet
E) World Wide Web

Question 67

Which of the following are advantages of computer networks?

A) They enable organizations to be more flexible.
B) They enable companies to share hardware, computer applications, and data.
C) They enable geographically dispersed employees to work together.
D) They provide a critical link between businesses and their customers.
E) All of the above

Question 68

Portals are an example of which network application?

A) Discovery
B) Collaboration
C) Communications
D) Web services
E) None of the above

Question 69

A type of processing that links two or more computers in an arrangement in which some machines provide computing services for user computers is best described as _______.

A) Open systems
B) Client/server
C) Peer-to-peer
D) Centralized
E) Mainframe-centric

Question 70

With _____, every call opens up a dedicated circuit for the duration of the call.

A) Voice over IP
B) Plain old telephone service
C) Chat rooms
D) Teleconference
E) Internet relay chat

Question 71

Consider this domain name, HYPERLINK "http://www.business.gsu.edu"www.business.gsu.edu. The "edu" is the _______.

A) Top-level domain
B) URL
C) Web site locator
D) Name of the computer
E) Address of the Webmaster

Question 72

Applications offered by the Internet2 include which of the following?

A) remote diagnosis
B) digital libraries
C) distance education
D) virtual laboratories
E) all of the above

Question 73

Each site on the Internet gets an assigned address, which is a(n) _____.

A) TCP address
B) IP address
C) URL address
D) ISO/OSI identifier
E) World Wide Web address

Question 74

_____ are Internet access points that are located in public places, such as libraries and airports.

A) Clients
B) Servers
C) Internet access computers
D) Network computer
E) Internet kiosks

Question 75

Which of the following statements about publication of material in foreign languages is not correct?

A) It is a competitive necessity.
B) It must be accurate.
C) It is expensive.
D) Content must be localized to the needs of people in local markets.
E) It is not yet a major consideration for most companies.

Question 76

A(n) _____ connects parts of the intranets of different organizations and allows secure communications among business partners.

A) Global network
B) Extranet
C) Internet
D) Intranet
E) World Wide Web

Question 77

_____ portals coordinate content within relatively narrow organizational and partners' communities.

A) Publishing
B) Personal
C) Affinity
D) Corporate
E) Commercial

Question 78

The _____ is a global wide-area network that connects approximately 1 million organizational computer networks.

A) Ethernet
B) Extranet
C) Internet
D) Intranet
E) World Wide Web

Question 79

_____ portals support communities such as hobby groups or political parties.

A) Industrywide
B) Personal
C) Affinity
D) Corporate
E) Commercial

Question 80

BitTorrent uses a process called _____, which eliminates file-sharing bottlenecks by having everyone share little pieces of a file at the same time.

A) Leeching
B) Collaboration
C) Packet switching
D) Torrents
E) Swarming