Question Discussion & Solution

MCQ

In contiguous memory allocation ____________

each process is contained in a single contiguous section of memory

all processes are contained in a single contiguous section of memory

the memory space is contiguous

none of the mentioned

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MCQ

Consider a computer with 8 Mbytes of main memory and a 128K cache. The cache block size is 4 K. It uses a direct mapping scheme for cache management. How many different main memory blocks can map onto a given physical cache block?

2048

256

Discussion

MCQ

The address generated by the CPU is referred to as ____________

Physical address

Logical address

Neither physical nor logical

None of the mentioned

Discussion

MCQ

Segment replacement algorithms are more complex than page replacement algorithms because ____________

Segments are better than pages

Pages are better than segments

Segments have variable sizes

Segments have fixed sizes

Discussion

MCQ

A FIFO replacement algorithm associates with each page the _______

time it was brought into memory

size of the page in memory

page after and before it

all of the mentioned

Discussion

MCQ

In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns(nano seconds). The average time required to access a page is?

3.0 ns

68.0 ns

68.5 ns

78.5 ns

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Introduction to Operating System

Types

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Memory Management

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Input Output Systems

Networking

Distributed Operating System

Protection and Security

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Linux

MS Windows

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Finding and Processing Files

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