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Computing > Network > Flashcards

Network Flashcards

1
Q

How can networks be connected?

A

Using LAN or WAN

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1
Q

What is a network?

A

a number of computers linked together using wireless /wired technology

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2
Q

Use of network

A

allows computer to share resources

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3
Q

Advantages of network

A

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

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4
Q

Disadvantages of a network

A

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

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5
Q

LAN stands for

A

Local Area Network

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6
Q

Explain LAN

A

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

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7
Q

Benefit of LAN

A

The devices can be used in a single network connection

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8
Q

Expand WAN

A

Wide Area Network

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9
Q

Explain WAN

A

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

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10
Q

What does WAN need?

A

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

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11
Q

Expand WWW

A

World wide web

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12
Q

Describe WWW

A

is an application which uses the internet

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13
Q

Expand URL

A

Uniform Resource Locator

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14
Q

What is URL?

A

A website that has a unique address

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15
Q

Expand HTML

A

HYPERTEX MARKUP LANGUAGE

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16
Q

What technology is used to communicatein the internet

A

Wi-Fi

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17
Q

Explain Bluetooth

A

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

18
Q

Explain Wi-Fi

A

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

19
Q

Advantage of Wifi

A

no need for cable

20
Q

Disadvantages of Wifi

A

limited distance on how far the signal can travel

21
Q

Explain Optical Fibre

A

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

22
Q

Advantages of Optical Fibre

A

signals cannot be interfered and it is very secure

23
Q

Disadvantages of Optical Fibre

A

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

24
Q

What is a router

A

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

25
Q

Expand NIC

A

Network Interface Card

26
Q

Explain NIC

A

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

27
Q

What is File server

A

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

28
Q

What is a Switch

A

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

29
Q

What is a network cable

A

It physically connects a computer to a network

30
Q

Explain Bus Network

A

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

31
Q

How to add a new computer to the Bus Network

A

The cable is attached to the backbone

31
Q

What happens if a cable attached to the backbone fails?

A

Only the computer of the cable will fail to operate

32
Q

Explain Star Network

A

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

32
Q

What happens if a cable fails in the Star Network

A

it will only affect that specific computer

32
Q

Explain Ring Network

A

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

33
Q

How to add a new computer to the Ring Network

A

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

34
Q

Advantage of Bus Network

A

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

35
Q

Disadvantage of Bus Network

A

If the backbone/main cable breaks all communication breaks down

36
Q

Advantage of Star Network

A

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

37
Q

Disadvantage of Star Network

A

If server fails the network fails

Expensive cabling/instalments

38
Q

Advantage of Ring Network

A

Not reliant on file server

39
Q

Disadvantage of Ring Network

A

If a cable fails, the whole network is affected

To add a new computer it is more difficult than a bus or star

40
Q

Use of Terminators on the bus network

A

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

Computing (11 decks)

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