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CDK4Ch2Defs - The purpose of the three fundamental models...

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Sheet1 Page 1 The purpose of the three fundamental models described in Chapter 2 "is to specify the design issue **dependability The term 1.----- architecture referred originally to the structuring of software as layers or models in a **software The 1.----- computer "downloads its operating system and any application software needed by the u **network 1.----- transparency is often an issue for mobile devices, as it is for mobile agents. In particular, clien **mobility Concern of 1.----- Model: "Computation occurs within processes **interaction?? Since clocks cannot be synchronized perfectly across a distributed system, Lamport ... proposed a **messages 1.----- is the variation in the time taken to deliver a series of messages. (It) ... is relevant to multimed **jitter With regards to reliable communication, 1.----- is defined as "the message received is identical to on **integrity The communication channel produces an 1.----- failure if it does not transport a message from p's o **omission ... processes may be able to detect ... a crash by the fact that the process repeatedly fails to respon **timeout
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