Computers and Technology, 30.03.2020 21:44, cjstablet04

In many cases, exactly one protocol data unit in layer N is encapsulated in a PDU at layer (N-1). It is also possible to break one N-level PDU into multiple (N-1)-level PDUs (segmentation) or to group multiple N-level PDUs into one (N-1)-level PDU (blocking). a) In the case of segmentation, is it necessary that each (N-1)-level segment contain a copy of the N-level header? b) In the case of blocking, is it necessary that each N-level PDU retain its own header, or can the data be consolidated into a single N-level PDU with a single N-level header?

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In many cases, exactly one protocol data unit in layer N is encapsulated in a PDU at layer (N-1). It...