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GCSE Computing > Network > Flashcards

Network Flashcards

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1
Q

What are the 2 types of network?

A

Peer-to-peer and server based.

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2
Q

Give 3 advantages of peer-to-peer networks.

A

Any 3 from…

  • They are cheap.
  • There are not dedicated servers; instead workstations are linked to each other.
  • For home networks or small companies.
  • Peer-to-peer networks are often built into modern operating systems.
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3
Q

What is the Microsoft term for peer-to-peer networks?

A

Workgroup.

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4
Q

Give 3 disadvantages of peer-to-peer networks.

A

Any 3 from…

  • They lack central configuration – day-to-day administration cannot be made in just one place.
  • They only work with small groups, generally less than 10 computers.
  • Security has to be configured on each individual computer.
  • User information and files are stored in lots of different places
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5
Q

Give 3 advantages of server based networks.

A

Any 3 from…

  • Can manage with large loads of systems.
  • Files are stored in one place so are more easily accessible.
  • Easier to administrate when there are more than 5 or so computers.
  • Data is always backed up so if data loss occurs then it can be fixed.
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6
Q

Give the main disadvantage of server based networks.

A

They are expensive.

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7
Q

What is a network component?

A

A device used to make a network function. Many pieces of hardware have more than 1 type of component built in.

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8
Q

What does a network adapter do?

A

It works to adapt a computer message to a format used by the network.

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9
Q

What is a modem and what is its main job?

A

Modem means “Modulator” at the sending end; it modulates a carrier to the data for the baseline signal (e.g. Broadband) to prepare it for transmission.

At the receiving end, the modem modulates the signal back to the original format.

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10
Q

Give 3 other jobs a modem can do.

A

Any 3 from…

  • Compression
  • Decryption
  • Error correction
  • Analogue to digital
  • Encryption
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11
Q

Give at least 1 type of modem.

A

1 from…

  • GPRS
  • Voiceband
  • Cable modem
  • ABSL modem
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12
Q

What will your modem communicate with (apart from your computer)?

A

The corresponding modem at the ISP.

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13
Q

What is a repeater?

A

A repeater receives data from a transmitter, aplifies it and sends it to a reciever.

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14
Q

What is another name for a repeater?

A

A regenerator.

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15
Q

What is a repeater’s job?

A

To extend the distance or enlarge the area of a network.

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16
Q

What is the problem with multiple repeaters?

A

They may interfere with the network connection.

17
Q

What is a bridge?

A

A device used to link 2 separate networks with different protocols (e.g. Ethernet, Wireless LAN (WiFi)). Bridges can also split networks to help manage traffic, and can be managed by a software application.

18
Q

What is a hub?

A

A hub is a hardware device that connects multiple computers together in a network.

19
Q

What does the type of hub suggest?

A

The amount of computers you can connect to it. E.g. A 5-port hub can connect 5 computers.

20
Q

What other piece of hardware do you need to “daisy chain” hubs?

A

Switches.

21
Q

What is a switch and what is its job?

A

A switch is a device used to connect multiple network cables together to allow connection, as only 1 data packet can be in a network cable at any one time.

22
Q

What is a data collision?

A

When 2 or more computers try to place a data package on the network at exactly the same time. (The network is set to deal with this, however.)

23
Q

Different networks are compatible if they have the same ______.

A

Protocol

24
Q

What is encryption?

A

Encryption is the conversion of data into a form, called a ciphertext, that cannot be easily understood by unauthorized people.

25
Q

What is decryption?

A

Decryption is the process of converting encrypted data back into its original form, so it can be understood.

26
Q

Why is encryption necessary?

A

To make sensitive data inaccessible for security purposes.

27
Q

What are access points?

A

An access point is wireless location in which computers can connect to, like a WiFi hotspot. Unfortunately it is slower than a cabled connection. The hardware for this is a WAP.

GCSE Computing (13 decks)

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