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2.18 In the Internet, the TCP/IP protocol suite is used for transmitting packets of information. The receiving TCP entity checks the packets for errors. If an error is detected, it requests retransmission of the packet that is found to be in error. Suppose that the packet error probability is 10?2 . (a) What is the probability that the third packet requires retransmission? (b) What is the probability that the tenth packet requires retransmission? (c) What is the probability that there is a packet retransmission within the first 5 packets? (d) Following on the lines of (c), how many packets are required in order for the probability of retransmission to be equal to or greater than 0.1?

The packet error probability is 10?2=1100=p(r)(a)We have to find : Third pack