Computer Networks, Connections & Protocols

Question 1

What is a Router?

Answer 1

It transmits the data (packets) between the networks

Question 2

What is a Switch?

Answer 2

Connect devices on a LAN

Question 3

What is a Network Interface Controller?

Answer 3

Built in hardware that allows a device to connect to a network

Question 4

What is an Ethernet Cable?

Answer 4

Reliable high speed connection cable in a LAN

Question 5

What is a Server?

Answer 5

A device that provides services for other devices

Question 6

What is a Wireless Access Point?

Answer 6

A switch that allows devices to connect wirelessly

Question 7

What is a Star Topology?

Answer 7

Devices are connected to a switch in the centre.

Question 8

What are Disadvantages of a Star Topology?

Answer 8

• If central switch fails, the whole fails

Question 9

What are Advantages of a Star Topology?

Answer 9

• If one device fails, the network is fine

Question 10

What are Disadvantages of a Mesh Topology?

Answer 10

• Requires lots of power

- Expensive

Question 11

What are Advantages of a Mesh Topology?

Answer 11

• Every device is connected to every device, it sends data the fastest route
• There is no single point where network can fail

Question 12

What is a Mesh Topology?

Answer 12

Every device is connected to each other

Question 13

What is a Virtual Network?

Answer 13

Part of a LAN or WAN where only certain devices can ‘see’ and communicate with each other

Question 14

What is a Network?

Answer 14

Where devices have been connected together so that they can share data and resources
Can be wired (ethernet) or wireless (wifi)

Question 15

What does LAN stand for?

Answer 15

Local Area Network

Question 16

What does WAN stand for?

Answer 16

Wide Area Network

Question 17

What is LAN?

Answer 17

Covers a small geographical area such as an office

Use their own infrastructure

Question 18

What is WAN?

Answer 18

Connect LAN together over a large geographical area and make use of infrastructure from telecommunications companies

Question 19

What is Bandwidth?

Answer 19

The amount of data that can pass between network devices per second

Question 20

What is a Client?

Answer 20

A computer or workstation that receives information from a central server

Question 21

What is a Peer to Peer Network?

Answer 21

All of the computers in the network are equal

They connect directly to each other

Question 22

What is a Standalone Computer?

Answer 22

A computer not connected to a network

Question 23

What can Cables be in a Network?

Answer 23

The cables in a network can be twisted pair cables, coaxial cables or fibre optic cable

Question 24

What is a Hub?

Answer 24

Recieves packets from all over the network and sends them on to every other device on the network

Question 25

What happens when there is more Bandwidth?

Answer 25

The more data that can be transferred at a time

Question 26

What happens when there is a larger Number of Users?

Answer 26

More data is being transmitted

Question 27

What happens when there is a Wired Connection?

Answer 27

They are faster than wireless

Fibre optic cables are faster than copper cables

Question 28

What Factors Impact Wireless Connection?

Answer 28

• Walls
• Distance
• Signal Quality
• Interference from other devices

Question 29

What is a Topology?

Answer 29

The layout of a network can impact on its performance