Exam 2- Chapter 6

Question 1

a system that connects computers and other devices (ex: printers) through communications media so that data and information can be transmitted among them

Answer 1

computer network

Question 2

Voice and data communication are becoming what two things?

Answer 2

1. Faster (bandwidth is increasing)
2. Cheaper

Question 3

the transmission capacity of a network; stated in bits per second

Answer 3

bandwidth

Question 4

What does narrowband mean?

Answer 4

relatively low transmission capacity

Question 5

the transmission capacity of a communications medium faster than 25 megabits per second for download and 3 mbps for upload

Answer 5

broadband

Question 6

What are two examples of broadband connections?

Answer 6

1. Digital subscriber line (DSL)
2. Cable

Question 7

What is the ultimate WAN (Wide Area Network)?

Answer 7

The internet

Question 8

short range networks– typically a few meters– that are used for communication among devices close to one person; can be wired or wireless.

Answer 8

personal area networks (PANs)

Question 9

relatively large networks that cover a metropolitan area (falls between LANs and WANs in size)

Answer 9

metropolitan area networks (MANs)

Question 10

typically large networks that cover large geographical areas; in some cases, they can span the entire planet and reach from Earth to Mars and beyond

Answer 10

wide area networks (WANs)

Question 11

Networks represent a compromise among three objectives:

Answer 11

speed, distance, and cost

Question 12

Local area networks are (fast/slow), (inexpensive/expensive) communication with distance (limitations/extensions).

Answer 12

fast, inexpensive, distance limitations

Question 13

connects two or more devices in a limited geographical region, usually within the same building, so that every device on the network can communicate with every other device

Answer 13

local area network (LAN)

Question 14

Most LANs today use ________.

Answer 14

Ethernet

Question 15

WANs typically connect multiple ______.

Answer 15

LANs

Question 16

WANs are generally provided by who?

Answer 16

common carriers such as telephone companies and the international networks of global communications services providers

Question 17

T or F: WANs have large capacities, and typically combine multiple channels (ex: microwave, satellite, and fiber-optic cables)

Answer 17

True

Question 18

communications processors that route messages from a LAN to the Internet, across several connected LANs, or across a WAN such as the internet.

Answer 18

routers

Question 19

high-speed central networks to which multiple smaller networks (such as LANs and smaller WANs) connect

Answer 19

backbone networks

Question 20

T or F: Traditional networks can be rigid and lack the flexibility to keep pace with the increasing business networking requirements.

Answer 20

True

Question 21

an emerging technology that is becoming increasingly important to help organizations manage their data flows across their enterprise networks

Answer 21

Software-defined networks

Question 22

With SDN, decisions that control how network traffic flows across network devices are managed centrally by ______.

Answer 22

software

Question 23

enable computers in a network to transmit and receive data

Answer 23

wireline communications media

Question 24

Today, computer networks communicate through _______ ________, which are discrete pulses that are either on or off, representing a series of bits (0s and 1s)

Answer 24

digital signals

Question 25

The "plain old telephone system" (POTs, which is the U.S. public telephone system), was originally designed as an _________ network to carry voice signals or sounds in an _______ wave format

Answer 25

analog

Question 26

continuous waves that transmit information by altering the amplitude and frequency of the waves

Answer 26

analog signals

Question 27

POTs require _____-_____ ______ to convert signals from analog to digital and vice versa; these are almost extinct in most parts of the developed world today

Answer 27

dial-up modems

Question 28

modems that operate over coaxial cable (ex: Cable TV)

Answer 28

cable modems

Question 29

operate on the same lines as voice telephones and dial-up modems; always maintain a connection, so an Internet connection is immediately available

Answer 29

DSL modems

Question 30

a pathway to communicate data from one location to another; it is composed of what two types of media?

Answer 30

communications channel: 1. cable (twisted-pair wire, coaxial, and fiber-optic) 2. broadcast (microwave, satellite, radio, or infrared)

Question 31

use physical wires or cables to transmit data and information

Answer 31

wireline media/cable media

Question 32

twisted pair wire and coaxial cables are made of:

Answer 32

copper

Question 33

fiber-optic cable is made of:

Answer 33

glass

Question 34

what is the most prevalent form of communications wiring, and is used for almost all business telephone wiring?

Answer 34

twisted-pair wire

Question 35

What is used to carry high-speed data traffic as well as television signals?

Answer 35

coaxial cable

Question 36

What is typically used as the backbone for a network?

Answer 36

fiber-optic cable

Question 37

What are the four network applications?

Answer 37

Discovery, Communication, Collaboration, and Education

Question 38

What is the Web's Major Strength? How does this present a major challenge?

Answer 38

- Major strength: the vast stores of information it contains - Major Challenge: navigating through the web and gaining access to necessary info is becoming more difficult

Question 39

a computer program that searches for specific information by keywords and then reports the results; maintains an index of billions of web pages

Answer 39

search engine

Question 40

computer programs that browse the Web and create a copy of all visited pages in order to create indexes for search engine purposes

Answer 40

web crawlers

Question 41

search several engines at once and then integrate the findings to answer user's queries

Answer 41

metasearch engine

Question 42

T or F: Multilingual websites are now a competitive necessity

Answer 42

True

Question 43

a Web-based, personalized gateway to info and knowledge that provides relevant information from different IT systems and the Internet using advanced search and indexing techniques

Answer 43

portal

Question 44

What are the 4 types of portals?

Answer 44

1. Commercial (public) portal 2. Affinity portal 3. Corporate portal 4. Industrywide portal

Question 45

How are the types of portals differentiated?

Answer 45

By the audiences they serve

Question 46

most popular type of portal on the Internet; intended for broad and diverse audiences, offers routine content, some of it in real time

Answer 46

commercial (public) portal

Question 47

offers a single point of entry to an entire community of affiliated interests, such as a hobby group or a political party (ex: Auburn University most likely has this type of portal for its alumni)

Answer 47

affinity portal

Question 48

offers a personalized, single point of access through a Web browser to critical business info located inside and outside an organization; this type of portal offer customer and employees self-service opportunities

Answer 48

corporate portal

Question 49

type of portal that serves entire industries (not just one single company like corporate portals)

Answer 49

industrywide portal

Question 50

What is the largest volume application running over the Internet?

Answer 50

E-mail

Question 51

What are 5 reasons that some U.S. companies are moving their call center operations back to the US?

Answer 51

1. They have less control of their operations when centers are located overseas 2. Language differences 3. Risk of breaching customer confidentiality and security 4. Representatives typically work with many companies, so they may not deliver the same level of customer service that each company requires

Question 52

What are the two major types of chat programs?

Answer 52

1. Web based 2. E-mail based

Question 53

POTs has been largely replaced by:

Answer 53

Internet telephony

Question 54

efforts made by two or more entities who work together to accomplish certain tasks

Answer 54

collaboration

Question 55

the movement of information as it progresses through the sequence of steps that make up an organization's work procedures

Answer 55

workflow

Question 56

refers to the use of digital technologies that enable organizations or individuals who are geographically dispersed to collaboratively plan, design, develop, manage, and research products, services, and innovative applications

Answer 56

virtual collaboration

Question 57

Virtual teams typically must collaborate (synchronously/asynchronously)

Answer 57

asynchronously

Question 58

type of collaboration in which an organization outsources a task to an undefined, generally large group of people in the form of an open call

Answer 58

crowdsourcing

Question 59

the use of electronic communication technology that enables two or more people at different locations to hold a conference

Answer 59

teleconferencing

Question 60

the latest version of videoconferencing, which enables participants to seamlessly share data, voice, pictures, graphics, and animation by electronic means

Answer 60

telepresence

Question 61

T or F: E-learning and distance learning are the same thing.

Answer 61

False; they are not the same thing, however they do overlap

Question 62

learning supported by the Web

Answer 62

E-learning

Question 63

any learning situation in which teachers and students do not meet face-to-face

Answer 63

Distance learning

Question 64

Massive open online courses (or MOOCs) are a new form of (distance learning/e-learning)

Answer 64

distance learning