ازهلها | Ezhalha
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1 312
A distribused system is a colloction of independent computers that appear to the users of the systeem as computers, and communicate together only by message patsing
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In Invocation Semantics: Maybe, the remote method may be executed once or not at all.
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Arbitrary failures a process may halt or perform "faicity" stepe
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Networks focuses on packets, etc., whereas distributed systems focus to applications and routing
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In Invocation Semantics: Maybe, the remote method may be executed once or not at all.
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In space uncoupling a sender can send a message even if the receiver is still not available.
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DS is used (a history of results) for error control mechanisms.
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The security of a DS can be achieved by only securing the processes and channels.
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In space coupling, a sender can send a message but not known to whom it is sending nor if more than one, if anyone, will receive the message.
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In Invocation Semantics: At-Least-Once, the remote method may be executed once or not at all.
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A distributed system is a transparency system that means if one machine crashes, the systom as a whole can still survive.
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Retransmission of results: whether to keep a history of result messages to enable lost results to be retransmitted, with re-executing the operations at the server.
