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Computer NetworksWhich one of the following statements is true about Go-Back-N (GBN) protocol? (i) Sequence number in GBN needs to be at least twice as large as the window size (ii) GBN uses multiple timers (iii) GBN retransmits packets upon receiving duplicate acknowledgements (iv) GBN discards packets that are received out of order20232mComputer NetworksConsider a sender S and a receiver R that are connected on a network, where the one-way latency is 250 milliseconds. The data rate of that network is 32000 bits per second, and size of each frame in that network is 1000 bits. Assume that S and R are using sliding windows with Selective Repeat. How large must the sliding window for S be in order to maximize the utilization?20237mComputer NetworksA TCP connection is using a window size of 10,000 bytes, and the previous acknowledgment number was 22,001. It receives a segment with acknowledgment number 24,001 and window size advertisement of 12,000. Draw a diagram to show the situation of the window before and after.20207mComputer NetworksIn a sliding window ARQ scheme, the transmitter's window size is N and the receiver's window size is M. The minimum number of distinct sequence numbers required to ensure correct operation of the ARQ scheme is (i) min(M, N) (ii) max(M, N) (iii) M + N (iv) M × N20162m
PreviousThe maximum window size for data transmission using the selective reject protocol with n-bit frame sequence numbers is (i) 2^n (ii) 2^(n-1) (iii) 2^n - 1 (iv) 2^(n-2)NextThe message 11001001 is to be transmitted using the CRC polynomial x^3 + 1 to protect it from errors. The message that should be transmitted is (i) 11001001000 (ii) 11001001011 (iii) 11001010 (iv) 110010010011