Question: a) In packet queueing delay if the traffic density is 2 and the arrival rate of bit is 4bit/sec then what is service rate of

a) In packet queueing delay if the traffic density is 2 and the arrival rate of bit is 4bit/sec then what is service rate of bits? What can you say about queuing delay with respect to traffic density? b) Why does packet loss happen and what can be done prevent them? c) Explain network threats and how can we defense them?

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