What is the main difference between Selective Repeat ARQ and Go-Back-N ARQ? Select one: a. Selective Repeat ARQ is more efficient in terms of channel utilization b. Selective Repeat ARQ only retransmits the frames that have been explicitly requested by the receiver c. Selective Repeat ARQ uses a larger window size d. Selective Repeat ARQ is more complex to implement
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Both conservative and replicative transposition result in movement of the transposon; however, only replicative transposition Inserts the transposon sequence into target sequences. Produces a second copy of the transposon sequence. Has transposase that cuts at inverted repeats and target sequences. Transfers the transposon to the new location without copying it.
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Selective Repeat Dilemma (After Receipt) (After Receipt) 0123012-pkt0 0123012-pkt1 0123012-pkt2 0123012 0123012 0123012 Example: * Sequence numbers: 0, 1, 2, 3 Window size = 3 01 2 30 1 2 pkt3 X 0123012 pkt0 (a) no problem Will accept packet with sequence number 0 * Receiver sees no difference in two scenarios! Duplicate data accepted as new in (b) Receiver can't see sender side. Receiver behavior identical in both cases! Something's (very) wrong! 0123012-pkt0 0123012-pkt1 0123012-pkt2 Xr X timeout retransmit pkto . X 0123 012pkt0 0123012 0123012 0123012
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