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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?
Q. a number of systems automatically delete all user files when a user logs off or a job terminates unless the user explicitly requests that they be kept other systems keep all fil
with the aid of diagrams describe the following OS structure monolithic,layered and client server.
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Present your own fully documented and tested programming example illustrating the problem of unbalanced loads. Describe the use of OpenMP's scheduler as a means of mitigating this
Q. Consider a system in which a program is able to be separated into two parts: code and data. The CPU recognizes whether it wants an instruction (instruction fetch) or data (data
Describe the purpose of the checkpoint mechanism. How habitually must checkpoints be performed? Explain how the frequency of checkpoints affects: System performance while no
my Operating System is windows trust but when the windows start say its windows xp. help pleaes
Differentiate between sequential access and direct access method?
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