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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.