Network

Question 1

How can networks be connected?

Answer 1

Using LAN or WAN

Question 1

What is a network?

Answer 1

a number of computers linked together using wireless /wired technology

Question 2

Use of network

Answer 2

allows computer to share resources

Question 3

Advantages of network

Answer 3

1) Files can be shared and accessed throughout the same network
2) Security can be managed centrally

Question 4

Disadvantages of a network

Answer 4

1) Viruses can spread quickly throughout a network
2) Set up costs can be expensive(servers, network cards ad routers need to installed)

Question 5

LAN stands for

Answer 5

Local Area Network

Question 6

Explain LAN

Answer 6

A LAN(Local Area Network) is spread over a small geographical area such a a building or an office

Question 7

Benefit of LAN

Answer 7

The devices can be used in a single network connection

Question 8

Expand WAN

Answer 8

Wide Area Network

Question 9

Explain WAN

Answer 9

WAN ( Wide Area Network) Spreads over a large geographical area on a global scale

Question 10

What does WAN need?

Answer 10

Telecommunications link/ fibre optic cable or a satellite to allow computers on the network to communicate

Question 11

Expand WWW

Answer 11

World wide web

Question 12

Describe WWW

Answer 12

is an application which uses the internet

Question 13

Expand URL

Answer 13

Uniform Resource Locator

Question 14

What is URL?

Answer 14

A website that has a unique address

Question 15

Expand HTML

Answer 15

HYPERTEX MARKUP LANGUAGE

Question 16

What technology is used to communicatein the internet

Answer 16

Wi-Fi

Question 17

Explain Bluetooth

Answer 17

Uses short range wireless technology to connect two devices
For devices to begin transferring data between each other they have to be paired

Question 18

Explain Wi-Fi

Answer 18

a wireless medium that allows devices to connect and communicate using radio waves

Question 19

Advantage of Wifi

Answer 19

no need for cable

Question 20

Disadvantages of Wifi

Answer 20

limited distance on how far the signal can travel

Question 21

Explain Optical Fibre

Answer 21

consists of a bundle of glass strands, each strands carries one data signal which means many data signals can be sent at one time

Question 22

Advantages of Optical Fibre

Answer 22

signals cannot be interfered and it is very secure

Question 23

Disadvantages of Optical Fibre

Answer 23

Requires the use of repeaters for data to travel over large distances

Question 24

What is a router

Answer 24

A hardware device that connects a number of networks together by either cable or wireless, to allow for data transmission

Question 25

Expand NIC

Answer 25

Network Interface Card

Question 26

Explain NIC

Answer 26

A electronic board installed in a computer to allow it to connect to a network It has a port to allow a network cable(Ethernet) to be attached

Question 27

What is File server

Answer 27

A powerful computer on a network, it stores user's files

Question 28

What is a Switch

Answer 28

A switch allows a large number of computers on a network to be connected checks the destination of data it receives, and ensures it is forwarded to the right computer

Question 29

What is a network cable

Answer 29

It physically connects a computer to a network

Question 30

Explain Bus Network

Answer 30

In this network, computer are connected to a main cable known as a backbone Data can travel both directions along the backbone

Question 31

How to add a new computer to the Bus Network

Answer 31

The cable is attached to the backbone

Question 31

What happens if a cable attached to the backbone fails?

Answer 31

Only the computer of the cable will fail to operate

Question 32

Explain Star Network

Answer 32

Computers are connected by their own cable to a file server All Data on the network passes through the file sever

Question 32

What happens if a cable fails in the Star Network

Answer 32

it will only affect that specific computer

Question 32

Explain Ring Network

Answer 32

Each computer is directly connected to two other adjacent computers to form a ring All data travels in one direction by visiting each computer in turn until it reaches its intended destination

Question 33

How to add a new computer to the Ring Network

Answer 33

Cable between two existing computers has to be broken and each part of the broken cable attached to the new computer

Question 34

Advantage of Bus Network

Answer 34

If cable is attached to the backbone fails, only that computer will fail to operate

Question 35

Disadvantage of Bus Network

Answer 35

If the backbone/main cable breaks all communication breaks down

Question 36

Advantage of Star Network

Answer 36

If cable fails, it will only affect the computer it is connected to and the rest of the network will operate as normal Easy to add new machines

Question 37

Disadvantage of Star Network

Answer 37

If server fails the network fails Expensive cabling/instalments

Question 38

Advantage of Ring Network

Answer 38

Not reliant on file server

Question 39

Disadvantage of Ring Network

Answer 39

If a cable fails, the whole network is affected To add a new computer it is more difficult than a bus or star

Question 40

Use of Terminators on the bus network

Answer 40

Stop the signal returning/bouncing back down the backbone cable and absorbs the data