Q. Optical storage is a

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Q. WINDOWS is a …………… operating.

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Q. Page making process from main memory to disk is called

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Q. A Dead-lock in an Operating System is

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Q. Match the following:

Set-I
(a) Disk scheduling
(b) Batch processing
(c) Time sharing
(d) Interrupt processing

Set-II
1. Round-robin
2. SCAN
3. LIFO
4. FIFO

Codes :
    (a) (b) (c) (d)

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Q. ………….. synchronizes critical resources to prevent dead lock.

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Q. …………….. is one of pre-emptive scheduling algorithm.

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Q. In order to allow only one process to enter its critical section, binary semaphore are initialized to

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Q. Remote Computing Service involves the use of time sharing and …………..

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Q. Applications-software

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Q. At any given time Parallel Virtual Machine (PVM) has ……………. send buffer and …………… receive buffer.

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Q. In the process management Round-robin method is essentially the pre-emptive version of …………

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Q. A page fault

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Q. A semaphore count of negative n means (s = –n) that the queue contains ………….. waiting processes.

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Q. A program is located in the smallest available hole in the memory is ……………

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Q. With a four programs in memory and with 80% average I/O wait, the CPU utilization is?

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Q. Assume N segments in memory and a page size of P bytes. The wastage on account of internal fragmentation is:

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Q. Suppose it takes 100 ns to access a page table and 20 ns to access associative memory with a 90% hit rate, the average access time equals:

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Q. Variable partition memory management technique with compaction results in:

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Q. Four jobs J1, J2, J3 and J4 are waiting to be run. Their expected run times are 9, 6, 3 and 5 respectively. In order to minimize average response time, the jobs should be run in the order:

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