CS604- Operating Systems Solved Quiz No. 4 100% Guaranteed

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CS604- Operating Systems

Solved Quiz No. 4 100% Guaranteed  

When the process tries to access locations that are not in memory, the hardware traps the operating system. This is called as __________

Ans:    Page Fault

Assume a logical address space of 16 pages, each of 1024 words, each mapped into a physical of 32 frames. Each word consists of 2 bytes. What will be the total number of bits required for f (frames)?

Ans:    5

For some page replacement algorithms, the page fault rate may increase as the number of allocated frames ___________

Ans:    increased

Following are the advantages of Virtual memory EXCEPT

Ans:    Low CPU consumption

In _________ allocation scheme number of frames allocated to a process is proportional to its size.

Ans:    Proportional Allocation

The high paging activity is called ______

Ans:    Thrashing

Following scheme allow efficient implementations of page tables EXCEPT

Ans:    Binary Page Table

To eliminate external fragmentation in segmentation the scheme used is ________

Ans:    Fixed size partition scheme

Segmentation is a memory management scheme that supports _________?

Ans:    Programmer’s view of memory

It is not possible to run a program whose size is greater than the size of the main memory.

Ans:    False

The segment table maps the ___________ to physical addresses.

Ans:    Two-dimensional logical addresses

FIFO Page Replacement Algorithm has the lowest page fault rate.

Ans:    False

___________ is a cariation of fork system call in several Unix operating system.

Ans:    vfork ()

The frame that has been modified during execution of a process is usually called _______ frame.

Ans:    Dirty

The logical address of Intel 80386 is ________.

Ans:    48 bits.

Page replacement algorithm with the 

In paged segmentation, we divide every segmentation in a process into __________ pages.

Ans:    Fixed size

The size of a page is defined by ____________

Ans:    CPU.

The major criterion in the selection of a particular algorithm is that we want to _________________.

Ans:    Minimize the number of page fault.