SET 1

Question 1

Describe a P2P network

Answer 1

Describe a P2P network

Question 2

What are the advantages of a P2P network

Answer 2

Cheap to set up and not dependent on server

Question 3

What are the disadvantages of a P2P network

Answer 3

Poor security and need to backup individually

Question 4

Describe a client to server network

Answer 4

• Client (user workstation) access program files and data from server
• Server provides resources (programs and files and data) for clients

Question 5

What are the advantages of a client server network

Answer 5

Central backup available and good security with p

Question 6

What are the disadvantages of a Client server network

Answer 6

• High cost

- server problems cause network problems

Question 7

Name two types of transmission Media

Answer 7

Wireless- Radio Waves and Wired-E.g fibre optic cable

Question 8

Give two disadvantages of Wi-Fi

Answer 8

• Wireless (Wi fi) has a lower bandwidth so is slower

- Wireless is also less secure than wired(cables)

Question 9

Give two advantages of Wi-Fi

Answer 9

Wireless is convenient as can move around without cables

Question 10

What additional hardware do you need to setup a wireless network

Answer 10

• Wireless router
• wireless NIC (Network interface card)
• receiver and transmitter on each computer

Question 11

Give two reasons why you should you get your own wired access to the Internet rather than use next door neighbours Wi-Fi

Answer 11

• Wired is more secure than wireless

- you would be breaking the law if you used your neighbours

Question 12

How can you prevent neighbours accessing your Wi-Fi

Answer 12

Passwords

Question 13

State a development in security software that has given confidence to customers for networked online shopping

Answer 13

Firewall as they filter out unwanted website, IP addresses or data

Question 14

What is a security suit

Answer 14

A number of programs in one to protect your computer

Question 15

What should a good security suit contain

Answer 15

Anti-virus program, anti- Malware program anti-spyware

Question 16

How can you speed up data transmission on a network

Answer 16

Compression reduces the amount of data exchanged, therefore faster transfer and load times

Question 17

Describe the role of a server in web hosting

Answer 17

It stores and provides access to web data when requested from the client

Question 18

Mobile devices regularly connect to network describe the technologies used to connect a mobile device to a network

Answer 18

• Bluetooth: short distance radio wave based system
• Wi fi: local area radio wave based system
• 3G or 4G :a set of standards that make use of the mobile phone telephone network

Question 19

Give an advantage and disadvantage of unicode

Answer 19

Advantage: a large range of characters as 16 bit
Disadvantages: takes up more memory

Question 20

What is unicode

Answer 20

• Unicode code is used to store text

- It converts each character into a 16 bit binary number

Question 21

What is ASCII code

Answer 21

ASCII code is used to store texts it converts each character into a 8-bit binary number

Question 22

Give advantages and disadvantages of ASCII code

Answer 22

Disadvantage: limited range of characters as 8-bit
Advantage: takes up less memory

Question 23

What is the maximum number of colours using 8-bit bit depth

Answer 23

2 to the power 8 = 256

Question 24

Describe true colour

Answer 24

24 it gives over 16 million colours so beyond human eye distinction

Question 25

State two ways to store negative numbers

Answer 25

Signed bit

twos complement