202 + Mcqs in Computer Organization and Architecture Page 1 McqOptions

1.	The value of the ratio M 1/M2 is
A.	0
B.	1/16
C.	1/8
D.	16
Answer» C. 1/8

Discussion

2.	The value of M1 is
A.	0
B.	2048
C.	16384
D.	262144
Answer» D. 262144

Discussion

3.	The valu of h2 is
A.	2.4 ns
B.	2.3ns
C.	1.8ns
D.	1.7ns
Answer» C. 1.8ns

Discussion

4.	The value of h 1is
A.	2.4ns
B.	2.3ns
C.	1.8ns
D.	1.7ns
Answer» B. 2.3ns

Discussion

5.	Consider a new instruction named branch -on- bit -set (mnemonic bbs ).The instruction bbs reg pos label jumps to label if bit in position pos of register operand reg is one A register is 32 bits wide and the bits are numbered 0 to 31 bit in the following emuationof this instruction on a processor that does not have bbs implemented  temp -----reg and mask  Branch to label if temp is non -zero The variable temp is a temporary register For ocrrect emulation the variable mask must be generated by
A.	mask----0x1< < pos
B.	mask ----0x ffffffff > > pos
C.	mask ----pos
D.	mask ----0xf
Answer» B. mask ----0x ffffffff > > pos

Discussion

6.	A CPU has five -stage pipeline and runs at 1 GHz frequency Instrution fetch happens in the first stage of the pipeline A conditional branch instruction  computer the target address and evaluates the processor branch until the branch outcome is known A program executes 10 9 instructions out of which 20 %are conditional branches If each instruction takes one cycle to complete on average then total execution time of the program is
A.	1.0 second
B.	1.2 seconds
C.	1 .4 seconds
D.	1 .6 seconds
Answer» C. 1 .4 seconds

Discussion

7.	A CPU has a cache with block size 64 bytes The main memory has K banks each bank bank being c bytes wide consecutive c byte chunks are mapped on consecutiv banks with warp -around All the k banks can be accssed in parallel but tow accesses to the same bank must be serialized A cache block access may involve multiple iterations of parallel Each Iteration requires decoding the bank number s to be accessed in parallel and this takes k /2 ns . the latency of one bank access is 80 ns If c = 2 and k = 24 then latency of retrieving a cache block starting at address zero from main memory is
A.	92 ns
B.	104 ns
C.	172 ns
D.	184 ns
Answer» E.

Discussion

8.	In a memory system four 256x8 PROM chips are used to make total memory of size 1024x4 what is the number of address bus lines
A.	4
B.	8
C.	10
D.	16
Answer» D. 16

Discussion

9.	If each address space represents one byte of storage space how many address lines are needed to access RAM chip arranged in a 4x6 arryay where each chip is 8Kx4bits
A.	13
B.	15
C.	16
D.	17
Answer» E.

Discussion

10.	How many RAM chips of size (256KX1 bit) are required to build 1M Byte memory
A.	8
B.	10
C.	24
D.	32
Answer» E.

Discussion

11.	The seek time of a disk is 30 ms. It rotates at the rate of 30 rotations /second the capacity of each track is 300 word the access time is(approximately)
A.	62 ms
B.	60 ms
C.	50 ms
D.	47 ms
Answer» E.

Discussion

12.	The number of records contained within a block of data on magnetic tape is defined by
A.	block definition
B.	recod contain clase
C.	blocking factor
D.	record per block factor
Answer» C. blocking factor

Discussion

13.	For a memory system the cycle time is
A.	same as the access time
B.	longer than the access time
C.	shorter than the access time
D.	submultiple of the access time
Answer» C. shorter than the access time

Discussion

14.	The minimum time delay requird between the initiation of tow successive memory operations is called
A.	memory cycle time
B.	memory access time
C.	transmission time
D.	waiting time
Answer» B. memory access time

Discussion

15.	The minimum time delay required between the initiation of two successive memory opeations is called
A.	memory cycle time
B.	memory access time
C.	transfer time
D.	skip time
Answer» C. transfer time

Discussion

16.	Time elapsedbetween initiation of a memory operation and the completion of thet operation is called
A.	memory cycle time
B.	memory access time
C.	transfer time
D.	skip time
Answer» C. transfer time

Discussion

17.	The desirable characterisic (s) of a memory system is (are)
A.	speed and reliability
B.	low power consumption
C.	durability and compactness
D.	all of these
Answer» C. durability and compactness

Discussion

18.	The desirable characterisc (s)of a memory system is (are)
A.	speed and reliability
B.	low power consumption
C.	durability and compactness
D.	all of these
Answer» C. durability and compactness

Discussion

19.	A ROM is used to store the table for multiplication of tow 8 -bit unsigned integers the size of ROM required is
A.	256Kx16
B.	64 Kx8
C.	4Kx16
D.	64 Kx16
Answer» E.

Discussion

20.	The tow types of main memory are
A.	primary and secndary
B.	random and sequental
C.	Rom and RAM
D.	central and peripherals
Answer» D. central and peripherals

Discussion

21.	Which part of the diskette never be touched
A.	Hub
B.	Ole in the centre
C.	Oval slot
D.	Corner
Answer» D. Corner

Discussion

22.	The data on the the tracks on a magnetic disks are written as
A.	up or down
B.	tiny magnetic spots
C.	0 or 1
D.	high or low voltage
Answer» E.

Discussion

23.	Which is the most popular medium for direct access secondary storage of a computer
A.	Magnetic tape
B.	Magnetic disk
C.	RAM
D.	ROM
Answer» C. RAM

Discussion

24.	Secondary storage device which used a delivery grooveless surface and is encoded by a laser beam in the form of microscopic pits is called
A.	laser disk
B.	compact disk
C.	photo disk
D.	video disk
Answer» E.

Discussion

25.	As a secondary storage medium what is the most important advantage of a video disk
A.	Compactness
B.	Potential capacity
C.	Durability
D.	Cost effectiveness
Answer» C. Durability

Discussion

26.	The storage device which is used to compensate for the difference in rates of flow of data from one device to another is called
A.	cache
B.	concentrator
C.	buffer
D.	I/O device
Answer» D. I/O device

Discussion

27.	Whate was the amount of memory required the earliest operating system called dos 1 .0
A.	4K
B.	8K
C.	16K
D.	32K
Answer» C. 16K

Discussion

28.	In a computer 16 bits are used to specify addresses in a ram the number of addresses will be
A.	256x 256
B.	65 536
C.	64K
D.	any of these
Answer» E.

Discussion

29.	If a computer has a 1024 K memory then what dose the letter K stand for
A.	Kilometer
B.	Thousand
C.	1024
D.	core
Answer» D. core

Discussion

30.	How many bits can be stored in the 8K capital
A.	8000
B.	8192
C.	4000
D.	4096
Answer» C. 4000

Discussion

31.	Which of the following chips can be reprogrammed whit special electric pulese
A.	EPROM
B.	PROM
C.	ROM
D.	EEPROM
Answer» E.

Discussion

32.	Which type of memory chips are likely to be used in the primary storage of the future generak of computers?
A.	Selenium chips
B.	Optical chips
C.	Bio chips
D.	Gallium arsenide chips
Answer» D. Gallium arsenide chips

Discussion

33.	In modern computers bipolar semiconductor chips are often used in the arithemetic logic unit. What material is used for the slower and less expensive primary storage section?
A.	Gallium arsenide (GaAs)
B.	Metal oxide semiconductor
C.	silicon
D.	Germanium
Answer» C. silicon

Discussion

34.	Which out of the following is not an alternative name for primary memory?
A.	Main Memory
B.	Primary storage
C.	Internal Storage
D.	Mass Storage
Answer» E.

Discussion

35.	The hardware in which data may be stored for a computer system is called
A.	register
B.	memory
C.	chip
D.	peripheral
Answer» C. chip

Discussion

36.	Which of the following coded entries are used to control access to computers?
A.	Code words
B.	pass memory
C.	Binary Pass
D.	ASC11 codes
Answer» C. Binary Pass

Discussion

37.	Which of the following storage devices can be carried around?
A.	floppy disks
B.	main memory
C.	registers
D.	core memory
Answer» B. main memory

Discussion

38.	which of the following is not true is not true of primary storage?
A.	it represents the decimal number through string of binary digits.
B.	It stores operation systems programs
C.	It stores data while they are being processed by CPU.
D.	It stores the bulk of data used by computer application
Answer» E.

Discussion

39.	Transfer of information from main storage is typically n times faster than the transfer from auxiliary storage, where n is about
A.	5
B.	10
C.	100
D.	200
Answer» C. 100

Discussion

40.	The numberof bits that are typically stored on each track of a magnetic disk is usually
A.	the same
B.	different
C.	depend on the program to be stored
D.	fifty
Answer» B. different

Discussion

41.	In magnetic disks, data id=s organiszed on the plotter in a concentric sets or rings called
A.	sector
B.	track
C.	head
D.	block
Answer» D. block

Discussion

42.	Diskette and hard disks are
A.	direct access device
B.	sequential access devices
C.	slower than magnetic tape
D.	used only in mainframe computers
Answer» B. sequential access devices

Discussion

43.	The number of records contained within a block of data on magnetic tape is defined by the
A.	block definition
B.	recordcontain clause
C.	blocking factor
D.	record per block factor
Answer» D. record per block factor

Discussion

44.	An advantage of blocking a tape is that
A.	the additional processing time is consumed
B.	the direct file method can be emulated
C.	the taps contain less data and longer tapes
D.	less tape is used to store the same amount of data
Answer» E.

Discussion

45.	Serial access memories are useful in applications where
A.	data consists of number
B.	short access time is required
C.	each stored word is processed differently
D.	data naturally needs to flow in and out in serial dorm
Answer» C. each stored word is processed differently

Discussion

46.	Which acess method is used for obetaining a record from a cassette tape?
A.	direct
B.	sequential
C.	random
D.	parellel
Answer» B. sequential

Discussion

47.	The process of entering data into a storage location
A.	causes variation in its address number
B.	adds to the contents of the location
C.	is called a readout operation
D.	is destructive of previous contents
Answer» D. is destructive of previous contents

Discussion

48.	The ALU of a Computer normally contains a number of hgh speed storage elements called
A.	Semi conductor memory
B.	registers
C.	hard disk
D.	magnetic disks
Answer» C. hard disk

Discussion

49.	Commonly used auciliary storage device are
A.	magnetic tape, magnetic drum and magnetic disk
B.	magnetic core, magnetic tape and magnetic drum
C.	magnetic disk, semiconductor memory and magnetic drum
D.	magnetic tape, monolithic storage and magnetic disk
Answer» B. magnetic core, magnetic tape and magnetic drum

Discussion

50.	Transfer of information from main storage is typically n times faster than the transfer from auxiliary storag, where n is about
A.	5
B.	10
C.	100
D.	200
Answer» C. 100

Discussion

Explore topic-wise MCQs in Computer Science.

The value of the ratio M 1/M2 is&nbsp;

The value of M1 is&nbsp;

The valu of h2 is&nbsp;

The value of h 1is&nbsp;

In a memory system four 256x8 PROM chips are used to make total memory of size 1024x4 what is the number of address bus lines&nbsp;

If each address space represents one byte of storage space how many address lines are needed to access RAM chip arranged in a 4x6 arryay where each chip is 8Kx4bits&nbsp;

How many RAM chips of size (256KX1 bit) are required to build 1M Byte memory&nbsp;

The seek time of a disk is 30 ms. It rotates at the rate of 30 rotations /second the capacity of each track is 300 word the access time is(approximately)&nbsp;

The number of records contained within a block of data on magnetic tape is defined by&nbsp;

For a memory system the cycle time is&nbsp;

The minimum time delay requird between the initiation of tow successive memory operations is called&nbsp;

The minimum time delay required between the initiation of two successive memory opeations is called&nbsp;

Time elapsedbetween initiation of a memory operation and the completion of thet operation is called&nbsp;

The desirable characterisic (s) of a memory system is (are)

The desirable characterisc (s)of a memory system is (are)

A ROM is used to store the table for multiplication of tow 8 -bit unsigned integers the size of ROM required is&nbsp;

The tow types of main memory are&nbsp;

Which part of the diskette never be touched&nbsp;

The data on the the tracks on a magnetic disks are written as&nbsp;

Which is the most popular medium for direct access secondary storage of a computer&nbsp;

Secondary storage device which used a delivery grooveless surface and is encoded by a laser beam in the form of microscopic pits is called&nbsp;

As a secondary storage medium what is the most important advantage of a video disk&nbsp;

The storage device which is used to compensate for the difference in rates of flow of data from one device to another is called&nbsp;

Whate was the amount of memory required the earliest operating system called dos 1 .0&nbsp;

In a computer 16 bits are used to specify addresses in a ram the number of addresses will be&nbsp;

If a computer has a 1024 K memory then what dose the letter K stand for

How many bits can be stored in the 8K capital&nbsp;

Which of the following chips can be reprogrammed whit special electric pulese&nbsp;

Which type of memory chips are likely to be used in the primary storage of the future generak of computers?

In modern computers bipolar semiconductor chips are often used in the arithemetic logic unit. What material is used for the slower and less expensive primary storage section?

Which out of the following is not an alternative name for primary memory?

The hardware in which data may be stored for a computer system is called&nbsp;

Which of the following coded entries are used to control access to computers?

Which of the following storage devices can be carried around?

which of the following is not true is not true of primary storage?

Transfer of information from main storage is typically n times faster than the transfer from auxiliary storage, where n is about

The numberof bits that are typically stored on each track of a magnetic disk is usually

In magnetic disks, data id=s organiszed on the plotter in a concentric sets or rings called

Diskette and hard disks are

The number of records contained within a block of data on magnetic tape is defined by the

An advantage of blocking a tape is that

Serial access memories are useful in applications where

Which acess method is used for obetaining a record from a cassette tape?

The process of entering data into a storage location

The ALU of a Computer normally contains a number of hgh speed storage elements called&nbsp;

Commonly used auciliary storage device are

Transfer of information from main storage is typically n times faster than the transfer from auxiliary storag, where n is about

The value of the ratio M 1/M2 is

The value of M1 is

The valu of h2 is

The value of h 1is

In a memory system four 256x8 PROM chips are used to make total memory of size 1024x4 what is the number of address bus lines

If each address space represents one byte of storage space how many address lines are needed to access RAM chip arranged in a 4x6 arryay where each chip is 8Kx4bits

How many RAM chips of size (256KX1 bit) are required to build 1M Byte memory

The seek time of a disk is 30 ms. It rotates at the rate of 30 rotations /second the capacity of each track is 300 word the access time is(approximately)

The number of records contained within a block of data on magnetic tape is defined by

For a memory system the cycle time is

The minimum time delay requird between the initiation of tow successive memory operations is called

The minimum time delay required between the initiation of two successive memory opeations is called

Time elapsedbetween initiation of a memory operation and the completion of thet operation is called

A ROM is used to store the table for multiplication of tow 8 -bit unsigned integers the size of ROM required is

The tow types of main memory are

Which part of the diskette never be touched

The data on the the tracks on a magnetic disks are written as

Which is the most popular medium for direct access secondary storage of a computer

Secondary storage device which used a delivery grooveless surface and is encoded by a laser beam in the form of microscopic pits is called

As a secondary storage medium what is the most important advantage of a video disk

The storage device which is used to compensate for the difference in rates of flow of data from one device to another is called

Whate was the amount of memory required the earliest operating system called dos 1 .0

In a computer 16 bits are used to specify addresses in a ram the number of addresses will be

How many bits can be stored in the 8K capital

Which of the following chips can be reprogrammed whit special electric pulese

The hardware in which data may be stored for a computer system is called

The ALU of a Computer normally contains a number of hgh speed storage elements called