1. 06/06/20161 INTRODUCTION TO NETWORKING

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7. Underpinning Knowledge What is a network? –More than one computer together in order to share data and resources –Means of processing data online or offline What are the main goals of a network? -Central processing and control -Distributed processing -Global communications 06/06/20167

8. Topologies =Shapes 06/06/20168 Bus Network

9. Star 06/06/20169

10. Ring 06/06/201610

11. Mesh 06/06/201611

12. Network Types 06/06/2016Unit 408 – Install Configure and Test ICT Networks 12 NameTopologyAccess Method MediaSpeeds (Mbps) EthernetBus/Ring/Sta r/Mesh Data Packet CAT 5/5e Cable,...

13. Network Types 06/06/201613 NameTopologyAccessMediaSpeed (Mbps) WirelessAccess PointWireless A,B,N Bluetooth, Wifi, Wimax,......,.... Radio Frequency 54-1000

14. Network Types 06/06/201614 Fibre Distributed Data Interface (FDDI)...Token Ring or Token Packet Fibre Optic Cable... NameTopologyAccess Method MediaSpeeds (Mbps)

15. Network Types 06/06/201615 NameTopologyAccess Method MediaSpeeds (Mbps) EthernetBus/Ring/Sta r/Mesh Data Packet Cat5/5e cable 10-1000

16. Network Types 06/06/201616 NameTopologyAccessMediaSpeed (Mbps) WirelessAccess PointWireless A,B,N Bluetooth, Wifi, Wimax, GSM, GPRS, 3G (HSPA) Radio Frequency 54-300

17. Network Types 06/06/201617 Fibre Distributed Data Interface (FDDI) RingToken Ring or Token Packet Fibre Optic Cable 100 NameTopologyAccess Method MediaSpeeds (Mbps)

18. Services Provided by Electronic Communications Email File Transfer Interacting with Databases Sharing Data Sharing Resources Sharing Applications Software Access to internet Other electronic communication 06/06/201618

19. Network Operating System 06/06/201619

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22. 06/06/2016Unit 408 – Install Configure and Test ICT Networks 22

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25. Functions of a Network OS 1.A........ 2.S... Level Security 3.U... Level Security 4.H... Support 5.S....Support 06/06/201625

26. Functions of a Network OS 1.Administration 2.Share Level Security 3.User Level Security 4.Hardware Support 5.Storage Support 06/06/201626

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29. Modes of Communication One way traffic only Two way traffic One way traffic in each direction 06/06/201629

30. Modes of Communication One way traffic only = Simplex Two way traffic = Duplex One way traffic in each direction = Half Duplex 06/06/201630

31. Modes of Communication Serial Transmission 06/06/201631

32. Modes of Communication Parallel 06/06/201632

33. Modes of Communication Serial Transmission = Asynchronous 06/06/201633

34. Modes of Communication Parallel = Synchronous 06/06/201634

35. Questions What is a network? Name three types of Network. Summarise with diagrams the four basic topologies. What are the speeds in Mbps of the following network types?: –Ethernet –Home Wireless –FDDI Name three services provided by electronic Communications Name two types of Network Operating System. What are 5 Functions of NOS? Define: Simplex, Duplex and Half Duplex. What is the difference between synchronous and asynchronous transmission? Name two types each of parallel and serial communications. 06/06/201635