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State about the communications network
1) The communications network may only accept blocks of data up to a specific size.
(2) Error control might be more effective with a smaller PDU size. With smaller PDUs, fewer bits need to be retransmitted when a PDU suffers an error.
(3) More equitable access to shared transmission facilities, with shorter delay, can be given.
(4) A smaller PDU size might be mean that receiving entities can assign smaller buffers.
(5) An entity may be need that data transfer comes to some sort of "closure" from time to time, for checkpoint and restart/recovery operations
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• This device creates one big collision domain and one large broadcast domain.
Explain the Multipath resistance The chipping codes used for CDMA not only exhibit low cross-correlation but also low autocorrelation. Thus, a version of the signal that is del
a) Used for sending e-mail. b) Uses port 25.
What are short, long and medium-term scheduling? Long term scheduler verifies which programs are admitted to the system for processing. It controls the degree of multiprogrammi
Initialization Imagine that all routers in our sample internetwork comes up at the same time. Each router sends a greeting packet to its neighbours to find out the sta
Recalling two FEC schemes for internet phone described. Suppose the first scheme generates a redundant chunk for every four original chunks. Suppose the second scheme uses a low-ra
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