Computer Organization and Architecture GATE Notes

Computer Organization MCQ Question and Answer

Question - 1

Which of the following is ways to configure virtual memory?

Aggregation technique
Paging technique
Segmentation technique
Both b & c

Solutions

Question - 2

The average time required to reach a storage location in memory and obtain its contents is called the

seek time
turnaround time
access time
transfer time

Solutions

Question - 3

The non-contiguous memory allocation method in virtual memory is called

Paging
Segmentation
Aggregation
None of the above

Solutions

Question - 4

Which of the following is not a weighted code?

Decimal Number system
Excess 3-code
Alphanumeric Codes
Error Detecting Codes

Solutions

Question - 5

In paging, operating system maintains data structure called ________ to map logical to physical address

data table
page table
mapper table
hash table

Solutions

Question - 6

The idea of cache memory is based

on the property of locality of reference
on the heuristic 90-10 rule
on the fact that references generally tend to cluster
all of the above

Solutions

Question - 7

Paging may suffer from problem known as

memory break
data leakage
Page break
index break

Solutions

Question - 8

Which of the following is lowest in memory hierarchy?

Cache memory
Secondary memory
Registers
RAM

Solutions

Question - 9

The addressing mode used in an instruction of the form ADD X Y, is

Absolute
indirect
index
None of the above

Solutions

Question - 10

Which of the following replacement algorithm can be used in page- break.

FIFO
LRU
optimal
All of the above

Solutions

Question - 11

If memory access takes 20 ns with cache and 110 ns with out it, then the ratio (cache uses a 10 ns memory) is

85%
90%
95%
100%

Solutions

Question - 12

"Select a page for replacement, that has been in the main memory for longest period of time." Which replacement algorithm follows this rule?

FIFO
LRU
optimal
All of the above

Solutions

Question - 13

In a memory-mapped I/O system, which of the following will not be there?

Solutions

Question - 14

The memory management scheme that supports the user view of memory

Paging
Segmentation
Aggregation
Abstraction

Solutions

Question - 15

Von Neumann architecture is

SISD
SIMD
MIMD
MISD

Solutions

Question - 16

Translation look Aside Buffer is used to hold

least recently used page table entries
most recently used page table entries
both of the above
None of the above

Solutions

Question - 17

The circuit used to store one bit of data is known as

Encoder
OR gate
Flip Flop
Decoder

Solutions

Question - 18

Cache memory acts between

CPU and RAM
RAM and ROM
CPU and Hard Disk
None of the above

Solutions

Question - 19

Before finalizing the instruction set for a computer, computer architeets need to consider

flexibility to programmer
number of addressing modes
system performance
All of the above

Solutions

Question - 20

Write Through technique is used in which memory for updating the data

Virtual memory
Main memory
Auxiliary memory
Cache memory

Solutions

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