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Digital Tech > Network > Flashcards

Network Flashcards

1
Q

Expand NIC

A

Network Interface Card

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2
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

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3
Q

What is a network cable

A

cable that physically connects a computer to a network

Networking cable is a piece of networking hardware used to connect one network device to other network devices or to connect two or more computers to share devices such as printers or scanners.

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4
Q

what are network cable classified categories

A

network cable are classified into categories depending on speed of transmission e.g. Cat6 cabling has a higher transmission performance compared to Cat5

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5
Q

What is Lan and what does it do

A

Lan can make use of both cable and wireless media

wireless gives the convenience of no cable

connecting cables in a Lan means there is a higher data transfer speed, higher reliability and security

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6
Q

Types Of Network and explain what each are made from and what they do

A

ethernet cable contains copper wires that carry electrical signals

optical cable are made from from fibre glass which carry data around a network via pulses of light

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7
Q

What is File server

A

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

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8
Q

What is a Switch

A

hardware device which is a signal connection point for computers on a network.

large numbers of computers to be connected to it directly using network cables.

checks the destination of data it receives can ensures it is forwarded to the intended computer.

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9
Q

what is a router and what does it do

A

Connects a number of networks together either by cable or wireless

Routers are situated at gateways where two or more network connect

Routes examines data as it passes and forwards the data using the most appropriate route to its destination

IP addresses are used to determine the route data travels to

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10
Q

Explain Bus Network

A

All computer are connected to a main cable known as the ‘backbone’

Data can travel in both direction in the backbone

terminators are placed at each end of the backbone

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11
Q

Use of Terminators on the bus network

A

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

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12
Q

How do you add a new computer to the Bus Network

A

The cable is attached to the backbone

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13
Q

What happens if a cable attached to the backbone fails?

A

Only the computer of the cable will fail to operate

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14
Q

What happens if the backbone fails

A

the whole network will fail

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15
Q

Advantage of Bus Network

A

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

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16
Q

Disadvantage of Bus Network

A

If the backbone/main cable breaks all communication breaks down

17
Q

Explain Star Network

A

Computers are connected by their own cable to a powerful computer called the file server

All Data on the network passes through the file sever

18
Q

How do you add a new computer to the Star Network

A

an additional computer can be added by attaching it (using its own cable ) top the file sever

19
Q

What happens if a cable fails in the Star Network

A

it will only affect the computer it is connected to and the rest of the network will operate as normal

20
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, high performance

21
Q

Disadvantage of Star Network

A

If server fails the network fails

Expensive cabling/instalments and management of equipment

22
Q

Explain Ring Network

A

There is no central or control computer

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

23
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

24
Q

What happens if a cable fails in the Ring Network

A

the whole connection fails

25
Q

Advantage of Ring Network

A

Not reliant on file server

26
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

27
Q

what is a broadband

A

this is the physical connection that runs from the provider to your connection (router)

28
Q

what are examples of broadbands

A

BT
EE
O2
virgin media

29
Q

Explain Wi-Fi

A

Wi-Fi is a wireless networking technology that uses radio waves to provide wireless high-speed Internet access

Made possible using radio waves and wireless router

30
Q

How should you protect your network

A

You can protect your network by using a password

31
Q

Advantage of Wi-Fi

A

Being able to set up network without the need for cabling

Access Wi-Fi anywhere there is a network in the wireless proximity

32
Q

Disadvantages of Wi-Fi

A

Signal strength depends on how far you are from the router

33
Q

Explain Bluetooth

A

Uses short range wireless technology in the form of radio signals to connect two devices together

allows data to be transferred between them

device needs to be in close proximity

devices have to be synchronise to begin transferring data

For devices to begin transferring data between each other they have to be paired

34
Q

Advantages of Bluetooth

A

no need for third party provider

no need for router

cheap

uses less power than other wireless technology

35
Q

Disadvantages of Bluetooth

A

device how to be in close proximity

36
Q

Explain Optical Fibre

A

very thin glass strands to send data at very fast transmission speeds

uses pulses of light

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

37
Q

Advantages of Optical Fibre

A

signals (data) cannot be interfered with (hacker) meaning security is higher than using copper

Greater bandwidth - a larger capacity of data can be sent over a period of time

38
Q

Disadvantages of Optical Fibre

A

expensive to install

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

Digital Tech (10 decks)

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