Question: Plz answer within 1 hour QUESTION 4 (a) TCP provides reliability and error free transmission, but it is not suitable for VoIP communication Explain why.

Plz answer within 1 hour QUESTION 4 (a) TCP provides reliability

Plz answer within 1 hour

QUESTION 4 (a) TCP provides reliability and error free transmission, but it is not suitable for VoIP communication Explain why. How is MOS used to grade the perceived call quality of VoIP, and what is the minimum MOS to achieve acceptable VolP performance? (6 marks) (b) How is virtualisation achieved by the separation of control plane from data forwarding plane in SDN and what are its advantages? What is the purpose of OpenFlow in an SDN controlled network? (5 marks) (C) Figure 5 below presents the elements in loT. Explain the meaning of each element using examples where necessary, such as WiFi, Mobile IP, cellular networks, etc. Page 5 of 6 TOT Identifieation Sening Communication Computation Semantics Services Figure 5. lol Elements (9 marks) (d) What traffic capture technique can be used to optimise the cache algorithms on web server? Explain it with suitable diagram

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