A static entity that consists of an address space and ports through which messag

Question

A static entity that consists of an address space and ports through which messages may be sent and received is called (A) Domain (B) Clouds (C) Multithreading (D) Multiinstance (E) None of the above Which of the following statement regarding interrupt is incorrect? (A) If no interrupts are pending, the processor proceeds to the next fetch stage. (B) Interrupt usually involves some overhead. (C) In handling multiple interrupts, the processor cannot disable other interrupts while an interrupt is being processed. (D) When the processor transfers control to the interrupt service routine, it needs to save the Program Status Word and the location of next instruction to be executed. (E) None of the above. Which of the following statement regarding memory is incorrect? (A) When the processor attempts to read a byte or word, will first check with the cache memory. (B) The main memory is usually large and slow. (C) The cache size has impacts on performance of the processor. (D) As the cache block size increases, the hit ratio will decrease. (E) None of the above. Which of the following technique is not used for I/O operations? (A) Programmed I/O (B) Interrupt driven I/O (C) Direct Memory Access (D) Peripheral polling I/O (E) None of the above Which of the following defines the system call interface to operating systems and hardware resources? (A) ABI (B) ISA (C) API (D) HLL (E) None of the above If more than one user or program attempts to make use of a shared resource at the same time, may cause the error of (A) improper synchronization (B) failed mutual exclusion (C) nondeterminate program operation (D) deadlock (E) All of the above A collection of one or more threads and associated system resources is called (A) Process (B) Multi-thread (C) Task (D) Job (E) None of the above The error-correction techniques in RAID disks uses the method of (A) spatial redundancy (B) temporal redundancy (C) information redundancy (D) physical redundancy (E) All of the above A copy of an application's state saved in some storage to be immune to the future failure is called (A) process isolation (B) virtual machine (C) checkpoints (D) concurrency control (E) None of the above Which of the following is not supported in Windows operating systems? (A) HAL (B) SMP (C) RPC (D) ALPC (E) None of the above

Explanation / Answer

11) Option A --> "Domain"

Giving addresses to web servers bearing port numbers to communicate a message through out the network from one side to other.

12) Option E --> None of the above

All the options are true regarding interrupts as No overhead when no requests are pending,if no interrupts proceed to next step,if interrupts exist it checks for the issue and make an update regarding the process state.

13) Option D --> "As cache block size increases,the hit ratio will decrease"

Among all this statement is incorrect because if cache block size increases it is easy to retrive the data by fetching so buffer hit ratio is high if not misses occur on blocks that was discarded earlier.If hit ratio is high then it improves performance.

14) Option D --> peripheral pooling I/O

It is not used as a technique for I/O operations remaining all are accepted Programmed I/O,Interrupt,DMA are techniques for I/O operations.

  

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