Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Stand alone

computer

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

A computer that isn’t

connected to any

others.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Network

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

When more than one computer are joined

together.

• Share files

• Share printers

• Share software

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

LAN

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Local Area Network

A network based on a

small geographic

location

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

LAN

Hardware

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Hub

Switch

WAP

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Client Server

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Files are stored on a

central server, and the

clients have to log onto

this server to get the

files.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Peer to peer

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Files are stored on

individual machine and

you have to request

permission to access

files stored on other

machines.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Network

Topologies

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Bus

Ring

Star

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

WAN

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Wide Area Network

A group of LANs joined together. This is done

over a larger geographic space.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

IP Address

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

The address of a

computer on a network.

This will change when

the computer joins the

network from a different

location.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

MAC

Address

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

The permanent

address of a computer,

regardless of where on

the network it is.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Packets

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

When data is sent

across a network it is

broken into little

packets to make it go

faster.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Protocols

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

The rules that govern

the communication

between computers.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Network

Security

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

User access levels

Suitable passwords

Encryption techniques

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Network

Policies

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Acceptable Use

Disaster Recovery

Failover

Backup

Archiving

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Internet

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

The largest WAN.

Computer networks

are joined all over the

world to share

information.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Internet

Hardware

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Modem

Router

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

DNS

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Domain Name Server

Each website has an IP address. The DNS find the

relevant IP address based on the website you want to visit.www.google.com = 71.243.166.3

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

HTML

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

HyperText Markup

Language

Used as the language of

the internet. Websites

are created using HTML.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

File Formats

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

• JPG = image

• GIF = animation

• PDF = document

• MP3 = sound

• MPEG = movie

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Compression

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Spare data is removed from a file to shrink the

file size.

Makes it faster to send across the internet.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Lossy

Compression

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

When the file is

‘uncompressed’ the

quality will be less.

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

Lossless

Compression

Learning ObjectivesREV

ISION

2.1.6 Computer communications

and networking

When the file is

‘uncompressed’ the

quality will be the

same.