Chapter 3 : Transmitting and receiving and other information processes

Question 1

What is 2 type of networks ?

Answer 1

Local Area Network (LAN) and Wide Area Network (WAN)

Question 2

What are 3 common network topologies?

Answer 2

• Bus Network
• Star Network
• Ring Network

Question 3

What is 2 common access method?

Answer 3

• Ethernet

- Token ring

Question 4

Name different network hardware

Answer 4

Network Interface card (NIC), Servers, routers and switch, bridges and gateways, hub and transmission media

Question 5

4 type of servers?

Answer 5

• File server
• Print server
• Mail server
• Web server

Question 6

Example of wired transmission media?

Answer 6

• Twisted - pair
• Coaxial cable
• Fibre - optic cable

Question 7

Example of wireless transmission media?

Answer 7

• Microwave
• Satellite
• Wireless LANs
• Mobile phones

Question 8

What is intranet and extranet ?

Answer 8

• An intranet is a private network that uses a similar interface to the Web
• An extranet is an intranet that is accessible to customers, suppliers or others outside the organisation.

Question 9

Different between analog data and digital data?

Answer 9

• Analog data is represented by using continuous variable physical quantities
• Digital data is represented in the form of digits or numbers

Question 10

What is 4 encoding and decoding posibilities in transmission?

Answer 10

• Analog data to digital signal
• Digital data to analog signal
• Digital data to digital signal
• Analog data to analog signal

Question 11

What are some issues in messaging system?

Answer 11

privacy, junk mail, information overload, misinterpretation, relationship

Question 12

What are some issues in Internet

Answer 12

• Internet trading (only stores, websites),
• Censorship (pornography , violence, racism , offensive materials)
• Internet banking (Security, nature of work, branches closure, job loss)