2: Network Components, Types and Connections

Question 1

All computers connected to a network that participate directly in network communication are classified as

Answer 1

hosts

Question 2

hosts that have software installed that enable them to provide info like email or webpages to other hosts on a network

Answer 2

Server

Question 3

computer hosts that have s/w installed that enables the hosts to request and display the information obtained from the sever

Answer 3

Clients

Question 4

Email server runs email server software and clients use mail software like ms outlook to access email

Answer 4

Email

Question 5

Web server runs server software and clients use browsers like IE

Answer 5

Web

Question 6

File server stores corporate and user files in a central location and the client devices use these files with client software like Windows File Explorer

Answer 6

File

Question 7

What is it called when computers run both client and server software at the same time

Answer 7

peer-to-peer (P2P) network

Question 8

What is the simplest P2P network

Answer 8

Wired or wireless connection

Question 9

Multiple PCs can be connected to create a larger P2P network but this requires a network devicle such as

Answer 9

Switch

Question 10

Main disadvantage of a P2P env is that the performance of a host can be slowed down if

Answer 10

acting as both server / client at same time.

Question 11

The advantages of peer-to-peer networking:

Answer 11

Easy to set up
Less complex
Lower cost because network devices and dedicated servers may not be required
Can be used for simple tasks such as transferring files and sharing printers

Question 12

The disadvantages of peer-to-peer networking:

Answer 12

No centralized administration
Not as secure
Not scalable
All devices may act as both clients and servers which can slow their performance

Question 13

A computer that has software installed to provide information such as email or web pages to other devices is known as a:

Answer 13

Server

Question 14

A smart phone uses web browser software to request and display a web page. The smart phone is considered what type of computer?

Answer 14

Client

Question 15

A network where two computers are communicating with each other as both a client and as a server is known as a:

Answer 15

peer-to-peer network

Question 16

Desktop Computer / Laptop / Printer /IP Phone / Wireless Tablet / Telepresence Endpoint

Answer 16

End Devices

Question 17

Wireless Routers / LAN Switch / Routers /Multilayer Switch / Firewall Appliance

Answer 17

Intermediary Devices

Question 18

Wireless Media / LAN Media / WAN Media

Answer 18

Network Media

Question 19

physical elements, or hardware, of the network.

Answer 19

Devices and Media

Question 20

the visible components of the network platform such as a laptop, PC, switch, router, wireless access point, or the cabling used to connect the devices.

Answer 20

Hardware

Question 21

(or host) is either the source or destination of a message transmitted over the network, as shown in the animation.

Answer 21

End device

Question 22

link between the home network and the internet.

Answer 22

ISP (Internet Service Provider)

Question 23

Why should you not directly access an ISP with a modem

Answer 23

Your computer is not protected

Question 24

The primary medium that connects the internet backbone

Answer 24

Fibre-optic cable.

Question 25

Typically offered by cable television service providers, the internet data signal is carried on the same coaxial cable that delivers cable television. It provides a high bandwidth, always on, connection to the internet. A special cable modem separates the internet data signal from the other signals carried on the cable and provides an Ethernet connection to a host computer or LAN.

Answer 25

Cable

Question 26

provides a high bandwidth, always on, connection to the internet. It requires a special high-speed modem that separates the DSL signal from the telephone signal and provides an Ethernet connection to a host computer or LAN. DSL runs over a telephone line, with the line split into three channels. One channel is used for voice telephone calls. This channel allows an individual to receive phone calls without disconnecting from the internet. A second channel is a faster download channel, used to receive information from the internet. The third channel is used for sending or uploading information. This channel is usually slightly slower than the download channel. The quality and speed of the DSL connection depends mainly on the quality of the phone line and the distance from the central office of your phone company The farther you are from the central office, the slower the connection.

Answer 26

DSL - Digital Subscriber Line

Question 27

Cellular internet access uses a cell phone network to connect. Wherever you can get a cellular signal, you can get cellular internet access. Performance will be limited by the capabilities of the phone and the cell tower to which it is connected. The availability of cellular internet access is a real benefit for people in areas that would otherwise have no internet connectivity at all, or for people who are constantly on the move. The downside of cellular connectivity is that the carrier usually meters the bandwidth usage of the connection and may charge extra for bandwidth that exceeds the contract data plan.

Answer 27

Cellular

Question 28

Satellite service is a good option for homes or offices that do not have access to DSL or cable. Satellite dishes (see figure) require a clear line of sight to the satellite and so might be difficult in heavily wooded areas or places with other overhead obstructions. Speeds will vary depending on the contract, though they are generally good. Equipment and installation costs can be high (although check the provider for special deals), with a moderate monthly fee thereafter. Like cellular access, the availability of satellite internet access is a real benefit in areas that would otherwise have no internet connectivity at all.

Answer 28

Satellite

Question 29

An inexpensive option that uses any phone line and a modem. To connect to the ISP, a user calls the ISP access phone number. The low bandwidth provided by a dial-up modem connection is usually not sufficient for large data transfer, although it is useful for mobile access while traveling. A modem dial-up connection should only be considered when higher speed connection options are not available.

Answer 29

Dial-up telephone