Given the HDLC frames, labeled (a) - (j), between nodes A and B, identify the va

Question

Given the HDLC frames, labeled (a) - (j), between nodes A and B, identify the values of the sequence number S(N) and acknowledgment number R(N) of each frame exchanged. Specify the I-frames (data frames), if any, that cannot be sent due to flow control and replace with a corresponding supervisory control frame (RR) to carry the acknowledgment(s). Assume that 2 bits are used for the sequence numbers and that the data link connection has just been established and no previous frames have been exchanged. Use the SRP ARQ protocol. Format: Frame Type, S(N), R(N)

Explanation / Answer

Please find below the values :

a - 1,4,2
b - 1,3,2
c - 1,4,2
d - 1,5,2
e - 1,5,2
f - 1,6,2
g - SREJ,2
h - 1,7,2
i - 1,8,2
j - 1,9,2

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