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Question:
(a) Briefly discuss and describe the possible RMI invocation semantics.
(b) (i) What is data marshaling?
(ii) Explain the role of a remote object reference during marshaling and unmarshalling, at both clients and servers, in an RMI system.
(iii) By using examples, distinguish between a local method invocation and a remote method invocation.
(c) Explain the benefits of middleware to distributed systems programmers, providing an example for each benefit.
(d) What are stub and skeleton and why are they needed in remote procedure calls?
Safety algorithm : This is to make sure if the system is in safe state or not. It may need an order of m x n2 operation to determine if the state of the system is safe or not.
Define ‘LRU’ page replacement policy LRU is Least Recently Used page replacement policy.
Question 3: (a) Fincorp Ltd is an insurance company wishing to change over to a better business system using an improved version of a financial information system (FIS). The direc
The Most comman difference are given below System calls are heavy. While a procedure call can generally be performed in a few system instructions, a system call needs the c
What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.
Q. More than one disk drive is able to be attached to a SCSI bus. Especially a fast wide SCSI-II bus can be connected to at most 15 disk drives. Remember that this bus has a bandw
list the prevention of mechanism for race condition with operating system
Define what an assembler is An assembler is machine dependant.
what is multiprogramming
General Graph Directory A serious trouble with using an acyclic graph structure is making sure that there are no cycles. When links are further added to an existing tree struc
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