1. 1 Computer Networking Dr. Mohammad Alhihi Communication and Electronic Engineering Department Philadelphia University Faculty of Engineering

2. communication Network components DevicesMediaProtocolsMessage 2 Basic Computer Network Concept:

3. Devices 3

4. Devices 4

5. Devices 5 Hup

6. Devices 6 Switch

7. Devices 7 router

8. Media 8

9. Cable type 9

10. 10

11. Segmentation 5,4,3 rule 11

12. Segmentation 5,4,3 rule 12

13. Protocols 13 human protocols: “what’s the time?” “I have a question” introductions … specific mages sent … specific actions taken when mages received, or other events network protocols: machines rather than humans all communication activity in Internet governed by protocols protocols define format, order of msgs sent and received among network entities, and actions taken on msg transmission, receipt

14. Protocols a human protocol and a computer network protocol: a human protocol and a computer network protocol: 14 Hi Got the time? 2:00 TCP connection req. TCP connection reply. time Q: Other human protocol?

15. Message 15

16. properties communication 16 1 Fault Tolerance (Redundancy) 1 Fault Tolerance (Redundancy) 2 Security 2 Security 3 scalability 3 scalability 4 Quality of services 4 Quality of services

17. properties communication 17 1.Fault Tolerance (Redundancy) The presence of more than an access point, in the case of line failure connected to the network to work at full efficiency in the case of line failure connected to the network to work at full efficiency

18. properties communication 18 1.Fault Tolerance (Redundancy)

19. properties communication 19 2.Security 2.Security

20. properties communication 20 Design flexibility in network 3. scalability

21. properties communication 21 4 Quality of services 4 Quality of services

22. Communication over the network 22 1.Message segmentation Benefits segmentation on the network 1. More than one device sends with some 2. Sends missing packet only(Bandwidth ) 3. Reduce the pressure on network

23. Communication over the network 23 1.Message 1.Message Multiplexing More than send the device at the same time

24. Communication over the network 24 2.Devices

25. Communication over the network 25 2.Devices Network Access Devices Connecting devices in a single network

26. Communication over the network Inter network Devices Inter network Devices 1. Connecting devices in Multiple networks 2. Identifies the error when it occurs 3. Identifies (PATH) 26

27. 27 Any AnyQuestion