Networks

Question 1

What is a Network

Answer 1

Something that consists of 2 or more nodes that are connected by a type of communication channel

Question 2

What is a node

Answer 2

Any device connected to the network. This can be a device which users use, connects nodes to each other or provides a service

Question 3

What is a server

Answer 3

A computer designed to act as a central computer that provides various resources. It has server software which manages logins and user access to computers on the networks.

Question 4

What is a file server

Answer 4

A server where users store files in a central location and access them from any node

Question 5

What is a communications channel

Answer 5

This is the connection. It can be bounded or unbounded

Question 6

Bounded

Answer 6

There are physical cables

Question 7

Unbounded

Answer 7

Signals are carried across / wireless

Question 8

What is a switch

Answer 8

This connects nodes in a network using communication cables

Question 9

What is cloud computing

Answer 9

This is using computing services such as storage, databases, software, networking over the internet known as ‘the cloud’

Question 10

Backbone cable

Answer 10

When fibre optic cables are used join segments of a network together especially when they’re in different buildings

Question 11

The types of microwave

Answer 11

terrestrial and Satellite

Question 12

What is terrestrial microwave

Answer 12

use line of sight to transmit data between two antennae

Question 13

What is satellite microwave

Answer 13

These use satellites which orbit earth to receive and pass on communications

Question 14

Advantages of Fibre Optic Cable

Answer 14

• Supports faster transmission rates
• More secure than UTP
• Not susceptible to interference
• Immune to lightning and electrical surges

Question 15

What does it mean to geo-stationery

Answer 15

This is when a satellite is in a fixed position and rotates at the same speed as the Earth

Question 16

Names the 6 different networks

Answer 16

PAN, HAN, LAN, MAN, WAN, GAN

Question 17

What is the function of a router

Answer 17

It connects nodes in the network to each other through wired and/or wireless connections

Question 18

What is the function of a firewall (why is it important)

Answer 18

It acts as a gate which blocks off and allows devices on the internet thus preventing unauthorized access to and from a private network

Question 19

Ways to protect a network (without use of a firewall)

Answer 19

• Limit amount of data accessed
• Make sure to set up a secure password
• Regularly update and check up on your network

Question 20

Advantages of using a network

Answer 20

Communication, File sharing,