Chapter 2

Question 1

Elements of Communication:

Answer 1

1. Message source, or sender
2. Destination, or receiver of the message
3. Channel

Question 2

All messages are broken into smaller pieces that can be easily transported together across a medium.

Answer 2

Segmentation

Question 3

Segmenting messages has two primary benefits:

Answer 3

1. Multiplexing
2. Increased efficiency of network communication

Question 4

________ occurs when the segments of two or more messages can shuffle into each other and share the medium.

Answer 4

Multiplexing

Question 5

The downside to using segmentation and multiplexing to transmit messages across a net
work is _______________________________

Answer 5

the level of complexity that is added to the process.

Question 6

Refers to a piece of equipment that is either the source or the destination of a message on a network

Answer 6

End device

Question 7

Generic term for an end device that sends or receives messages is

Answer 7

Host

Question 8

Servers are hosts that are set up to store and share information with other hosts called ____

Answer 8

Clients

Question 9

A unique physical address used by hosts inside a local-area network (LAN)

Answer 9

Host address

Question 10

Connect end users to their network. Examples are hubs, switches, and wireless access points.

Answer 10

Network access devices

Question 11

Connect one network to one or more other networks. Routers are the main example.

Answer 11

Internetwork devices

Question 12

Route services such as IPTV and wireless broadband.

Answer 12

Communication servers

Question 13

Connect users to servers and networks through telephone or cable.

Answer 13

Modems

Question 14

Secure the network with devices such as firewalls that analyze traffic exiting and entering networks

Answer 14

Security devices

Question 15

The three main types of media in use in a network are:

Answer 15

1. Copper
2. Fiber-optic cable
3. Wireless

Question 16

______ messages refers to the way data is converted to patterns of
electrical, light, or electromagnetic energy and carried on the medium

Answer 16

Encoding

Question 17

A group of end devices and users under the control of a common administration.

Answer 17

A local-area network (LAN)

Question 18

A network that is used to connect LANs that are located geographically far apart.

Answer 18

A wide-area network (WAN)

Question 19

An ________ is a collection of two or more LANs connected by WANs.

Answer 19

Internetwork

Question 20

___________, which are often also TSPs, connect their customers to the Internet.

Answer 20

Internet service providers (ISP)