Chapter 2.1 : Networks and the Internet

Question 1

Individual computers consist of both _______ and _______ .

Answer 1

hardware and software

Question 2

What are 4 examples of hardware?

Answer 2

input devices
output devices
memory units
central processing units

Question 3

What are 3 examples of software?

Answer 3

operating systems
utilities
applications

Question 4

Connecting computers together involves forming _______ ?

Answer 4

networks

Question 5

How do networks make e-business so interesting?

Answer 5

They open up exciting opportunities for

communication
collaboration
markets

Question 6

What are the 4 important type of networks?

Answer 6

Local area network (LAN)
Wide area network (WAN)
Virtual private network (VPN)
Internetworks (intranets, extranets, internet)

Question 7

What is LAN?

Answer 7

Local area network

a network covering a small physical area, such as a small office

Question 8

What type of network is this:

a network covering a small physical area, such as a small office

Answer 8

LAN

Local area network

Question 9

What is WAN?

Answer 9

Wide area network

a network that covers a broad geographical area

Question 10

What type of network is this:

a network that covers a broad geographical area

Answer 10

WAN

Wide area network

Question 11

What is VPN?

Answer 11

Virtual private network

commonly used to secure communications through the public internet

Question 12

What type of network is this:

commonly used to secure communications through the public internet

Answer 12

VPN

Virtual private network

Question 13

Example of internetworks

Answer 13

intranets
extranets
internet

Question 14

Intranet, extranets and internet belongs to a network called?

Answer 14

internetworks

Question 15

What are intranets? What is the purpose of it?

Answer 15

private networks that operate within organisations

Purpose:

• restrict access to important or sensitive information
• simplify access to information for employees

Question 16

What are extranets? what is the purpose of it?

Answer 16

private networks that extend beyond the boundaries of companies to include suppliers, customers and other collaborators.

Purpose:
- to support supply chain management

Question 17

What is the internet? What can if be understood as according to Chaffey (2009)?

Answer 17

a ‘network of networks’ that enables communication between millions of computers worldwide.

It can be understood as a large client/server system.

Question 18

Client computers provide? Example?

Answer 18

the interface to human users and perform local processing

Example:
-personal computer at home

Question 19

What are server computers? Example?

Answer 19

computers dedicated to providing services across the network

Example:
- Email

Question 20

What are firewalls used for?

Answer 20

to protect the security information flowing over an intranet or extranet