05 Jun A sequence of fixed-length packets carrying digital audio
Question
1. A sequence of fixed-length packets carrying digital audio signal is transmitted over a packet
network. A packet is produced every 10 ms. The transfer delays incurred by the first 10 packets
are 45 ms, 50 ms, 53 ms, 46 ms, 30 ms, 40 ms, 46 ms, 49 ms, 55 ms, 51 ms.
a. Sketch the sequence of transmission times and packet arrival times.
b. Find the delay that is inserted at the receiver to produce a fixed end-to-end delay of 75 ms
c. Sketch the contents of the buffer at the function of time
2The following corresponds to an HDLC ABM frame exchange with no errors.
a. Complete the diagram by completing the labeling of the frame exchanges.
b. Write the sequence of state variables at the two stations as each event takes place.
3. Assume station B is awaiting frame 2 from station A.
a. Complete the diagram in HDLC ABM by completing the labeling of the frame exchanges.
b. Write the sequence of state variables at the two stations as each event takes place
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