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Question:
(a) Explain the similarities and differences between two different threads running in the same process and two independent processes. When would you want to use two threads in the same process? When would you want different processes?
(b) Describe the function of any two of following in the context of a remote procedure call
• Communication Module • Dispatcher • Server Stub
(c) Describe the role of a remote object reference during marshaling and unmarshalling, at both clients and servers, in an RMI system.
(d) By using examples, distinguish between a local method invocation and a remote method invocation.
(e) Briefly discuss and describe the possible RMI invocation semantics.
(f) A ‘null' RMI that takes no parameters, calls an empty procedure and returns no values delays the caller for 2.0 milliseconds. Explain what contributes to this time.
In the same RMI system, each 1K of user data adds an extra 1.5 milliseconds. A client wishes to fetch 32K of data from a file server. Should it use one 32K RMI or thirty-two 1K RMIs?
Write a note on the usage of semaphores. Semaphore is a synchronization tool and it is a variable having integer values. It is accessed only by two standard atomic operations w
basic advantage of using interrupt initiated data transfer over transfer under program control without an interrupt
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What is independent process? A process is independent it cannot influence or be affected by the other processes implementing in the system. Any process does not share data with
Q. Once more considering the RPC mechanism consider the exactly once semantic. Does the algorithm for implementing this semantic implement correctly even if the ACK message back to
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Pure and impure interpreters In a pure interpreter, the source program is maintained in the source form throughout its interpretation. This arrangement acquires substantia
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