1. Mr C Johnston ICT Teacher www.computechedu.co.uk BTEC IT Unit 09 - Lesson 03 Standards and Technologies

2. What is a standard? Why do we need them? Is there really a need for different technologies?

3. Session Objectives Be able to describe different standards and technologies which are used to enable communication on a network, Be able to determine which standards and technologies are suitable for different types of a network.

4. Wired Standards In order for commination to take place successfully the IEEE (institute of electrical and electronic engineers) have defined some standards for LANs. IEEE 802.2 – Logical Link Layer Control (LLC) IEEE 802.3 – Ethernet inc MAC Addressing IEEE 802.5 – Token Ring FDDI – Fibre-Distributed Data Interface

5. BTEC Book – Unit 09 p8- 10 BTEC Book – Unit 10 p17- 19 BTEC Book – Unit 09 p8- 10 BTEC Book – Unit 10 p17- 19

6. Wireless Standards There are also a number of different standards for wireless communication – WiFi Most stem from the 802.11 standard including: IEEE 802.11b IEEE 802.11g IEEE 802.11n IEEE 802.11ac WiFi is not the only wireless technology used on LANs, other technologies you need to know about include: Bluetooth – and its different classes Infrared 3G / 4G

7. BTEC Book – Unit 09 p8- 10 BTEC Book – Unit 10 p17- 19 BTEC Book – Unit 09 p8- 10 BTEC Book – Unit 10 p17- 19

8. What is a standard? Why do we need them? Is there really a need for different technologies?