2.01 - The evolution of the purpose and benefits of networking

Question 1

What did large organizations have in 1970s?

Answer 1

In 1970s, large organizations had mainframes and minicomputers that could be accessed by individual users through a time-sharing operating system using a terminal connected with a cable.

Question 2

What did WAN technology allowed computers to do in 1970s?

Answer 2

It allowed computers to in different organizations to be networked, even if they were thousand km away.

Question 3

Name

3 benefits of WAN technology

Answer 3

1. Run jobs on a remote computer with the required application software
2. Access data archives stored in a remote computer
3. Transmit messages electronically to a user on a remote computer

Question 4

What is a typical WAN used in a company today?

Answer 4

It is used to connect sites and branches

Question 5

What is PSTN?

Answer 5

Public Switched Telephone Network company. It leases WAN to companies by providing them with a dedicated communication link

Question 6

What is LAN technology?

Answer 6

It is used within a site or branch. It is owned by the organization or company and it contains a device that allows connection to other networks

Question 7

Name

3 benefits of connecting PCs in a LAN

Answer 7

1. Saves the expenses on installing appilcation software on each individual PC by installing it on an application server attached to the LAN
2. Allows users to store large files and share them between users through a file server attached to LAN
3. Uses Electronic mail to communicate with staff rather than sending round memos on paper

Question 8

Full form of LAN

Answer 8

Local Area Network

Question 9

Full form of WAN

Answer 9

Wide Area Network

Question 10

How can LANs be connected to WANs?

Answer 10

The Internet allows LANs to be connected to WANs, wich are inturn connected to the Internet to allow access to resources worldwide

Question 11

What is the difference bwteen a Web browser and a Web server?

Answer 11

A web browser is basically the software that we use for browsing on the internet and displaying pages. Conversely, a web server refers to the software that provides its users with the documents they request via their web browsers.

Question 12

Describe

The client server model

Answer 12

It was first used in large organizations within internal networks and now uses a web browser as the client and a web server hosted on to the internet as the server

Question 13

Difference between thin clients and thick clients

Answer 13

Thin clients run applications on the server and send input data to the server, while thick clients may carry out processing before and after running the application on the server, or download and run the application locally

Question 14

What are the benefits of choosing the client-server approach?

Answer 14

1. Can store a database
2. Can access a web application
3. Can carry out an e-commerce or financial transaction

Question 15

What are the benefits of choosing the client-server approach?

Answer 15

1. Can store a database
2. Can access a web application
3. Can carry out an e-commerce or financial transaction

Question 16

What is peer-to-peer networking?

Answer 16

Peer-to-peer networking is an alternative mode of operation for sharing files, where each peer stores some of the files and can act as a client or server when requesting or downloading files

Question 17

What are the advantages of peer-to-peer networking?

Answer 17

1. Avoids network congestion
2. Allows seperate parts of a file to be downloaded
3. Make parts available from more than one host

Question 18

What are the advantages of the client-server model?

Answer 18

1. It allows an organization to control the downloading and use of files
2. It better protects them from malware attacks