1.3 Networks, Connections and Protocols

Question 1

Describe a Client-Server network

Answer 1

The network relies on a central server.

All clients (devices) request services from the
server (e.g. print services/file services).

Additional hardware needed e.g.
high end powerful servers.

Question 2

Describe a Peer-Peer network

Answer 2

All computers have equal status.

Each device can act as a client and a server.

All devices can request and provide network
services.

No additional hardware/software needed to
set up this type of network.

Question 3

What are the two types of addresses?

Answer 3

MAC and IP

Question 4

What does IP stand for?

Answer 4

Internet Protocol

Question 5

What happens to your IP when you move to a different network?

Answer 5

It changes

Question 6

What does IPv4 look like?

Answer 6

4 blocks of denary numbers between 0 and 255, separated by full stops. E.g. 192.168.0.1

Question 7

What does IPv6 look like?

Answer 7

8 blocks of 4 hexadecimal digits, separated by colons E.g. 6164:6120:6C6F:7665:6C61:6365:2043:4B4B

Question 8

What does a MAC address look like?

Answer 8

12 hexadecimal digits, usually grouped in pairs. E.g. E0-25-D4-3C-A5-71

Question 9

Which type of address doesn’t change?

Answer 9

MAC

Question 10

What type of encryption method is used for secure sites and what does it stand for?

Answer 10

SSL - Secure Socket Layer

Question 11

Describe a LAN

Answer 11

A network which spans a small area in one location

Computers are connected together over a small geographical area such as a single building or a single site.

The owner of the LAN is responsible for the connections (e.g. cabling, WI-FI hotspots, etc.).

Question 12

Describe a WAN

Answer 12

A network which spans a large area and has servers in multiple different geographical locations.

Computers are connected over a large geographical area. This could be several sites, town wide, country wide or even international.

The owners of the WAN use existing network infrastructure to connect the sites together (e.g. phone lines, satellite connections).

Question 13

What is a packet?

Answer 13

A snippet of data sent through a network

Question 14

What does WAP stand for?

Answer 14

Wireless Access Point

Question 15

What does a WAP do?

Answer 15

It allows devices to connect wirelessly to a network

Question 16

What is a router?

Answer 16

An interconnection device used on networks to connect two or more devices to each other or the internet

Question 17

Why do routers apply a subnet mask?

Answer 17

To identify a network and determine which network the packet should be forwarded to

Question 18

What is a data collision?

Answer 18

When two or more computers place a packet onto a network at the same time

Question 19

What is a switch?

Answer 19

An interconnection device that connects two or more devices together and helps in solving the issue of data collisions.

Question 20

What happens when a data packet arrives at a switch?

Answer 20

its destination address is examined and the switch creates a direct connection to that device.

Question 21

What are the three main cable types?

Answer 21

Ethernet, Fibre Optic, Coaxial Cable

Question 22

What is bandwidth?

Answer 22

The amount of data that can be sent at a time in a network