Revision 1.3.2 - Networks

• Computing
• Upper Secondary (Key Stage 4)
• GCSE

Revision - 1.3.2 Networks

Interactive Revision Lesson

WIRED

WIRELESS

Faster connection

Higher Bandwidth

Wi-Fi

Copper based

Fibre optic

Bluetooth

Ethernet

More Portable

2.4Gz and 5Ghz

Wired

Higher Bandwidth (so its faster)

Uses Ethernet protocol

Copper based and Fibre Optic cables

Wireless

Uses radio waves

Bluetooth / wifi

Lower bandwidth

Portable

Frequencies 2.4Ghz and 5Ghz

What is Encryption?

Encryption

Scrambling the data being sent so that it is not understandable if intercepted.

This is done using a cypher key.  

Requires a key to unscramble it

IP Address

MAC Address

Logical address

Physical address

Has two versions ipv4 and ipv6

Can change in a LAN

Fixed - will not change

Always stored as a hexadecimal

Media Access Control

Can be Dynamic or fixed

Internet Protocol

For local identification

For Global Identification

What is a Standard?

Standard

An agreed set of rules you follow

Computing:  Ensures something with work (compatible) or can communicate

Leading us to the term PROTOCOL!

Protocols?
Name some...

Protocols

TCP/IP

FTP

HTTP and HTTPS

POP

IMAP

SMTP

Layers

Grade 7+ Concept

Will address another time

SmartRevise

Remember the expectations

Reflect on your performance