Assembly language ________.

is the easiest language to write programs

uses alphabetic codes in place of binary numbers used in machine language

is the easiest language to write programs

need not be translated into machine language

. Computers use addressing mode techniques for ____________.

giving programming versatility to the user by providing facilities as pointers to memory counters for loop control

to reduce no. of bits in the field of instruction

specifying rules for modifying or interpreting address field of the instruction

The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to ______.

the time it takes for the read-write head to move into position over the appropriate track

the time its takes for the platter to make a full rotation

the time it takes for the read-write head to move into position over the appropriate track

the time it takes for the platter to rotate the correct sector under the head

MIMD stands for _____.

Multiple instruction memory data

Multiple instruction multiple data

Multiple instruction memory data

Memory instruction multiple data

Multiple information memory data

‘Aging registers’ are _______.

Registers which keep track of when the program was last accessed.

Counters which indicate how long ago their associated pages have been referenced.

Registers which keep track of when the program was last accessed.

Counters to keep track of last accessed instruction.

Counters to keep track of the latest data structures referred.

90 + Mcqs in Computer Organization and Architecture: in ENGINEERING SERVICES EXAMINATION (ESE) Page 1 McqOptions

1.	(2FAOC)16 is equivalent to _____.
A.	(195 084)10
B.	(001011111010 0000 1100)2
C.	Both A.and (B)
D.	None of these
Answer» C. Both A.and (B)

Discussion

2.	If memory access takes 20 ns with cache and 110 ns with out it, then the ratio ( cache uses a 10 ns memory) is
A.	93%
B.	90%
C.	88%
D.	87%
Answer» C. 88%

Discussion

3.	Logic X-OR operation of (4ACO) H & (B53F) H results
A.	AACB
B.	0000
C.	FFFF
D.	ABCD
Answer» D. ABCD

Discussion

4.	Assembly language ________.
A.	uses alphabetic codes in place of binary numbers used in machine language
B.	is the easiest language to write programs
C.	need not be translated into machine language
D.	None of these
Answer» B. is the easiest language to write programs

Discussion

5.	. A binary digit is called a
A.	Bit
B.	Byte
C.	Number
D.	Character
Answer» B. Byte

Discussion

6.	can be represented in a signed magnitude format and in a 1’s complement format as
A.	111011 & 100100
B.	100100 & 111011
C.	011011 & 100100
D.	100100 & 011011
Answer» B. 100100 & 111011

Discussion

7.	The average time required to reach a storage location in memory and obtainits contents is called the _____.
A.	seek time
B.	turnaround time
C.	access time
D.	transfer time
Answer» D. transfer time

Discussion

8.	. In a memory-mapped I/O system, which of the following will not be there?
A.	LDA
B.	IN
C.	ADD
D.	OUT
Answer» B. IN

Discussion

9.	The maximum addressing capacity of a micro processor which uses 16 bit database &32 bit address base is
A.	64 K.
B.	4 GB.
C.	both (A) & (B) .
D.	None of these.
Answer» C. both (A) & (B) .

Discussion

10.	In computers, subtraction is carried out generally by____.
A.	1's complement method
B.	2's complement method
C.	signed magnitude method
D.	BCD subtraction method
Answer» C. signed magnitude method

Discussion

11.	A group of bits that tell the computer to perform a specific operation is known as
A.	Instruction code
B.	Micro-operation
C.	Accumulator
D.	Register
Answer» B. Micro-operation

Discussion

12.	Generally Dynamic RAM is used as main memory in a computer system asit______.
A.	Consumes less power
B.	has higher speed
C.	has lower cell density
D.	needs refreshing circuitry
Answer» C. has lower cell density

Discussion

13.	The communication between the components in a microcomputer takes place viathe address and
A.	I/O bus
B.	Data bus
C.	Address bus
D.	Control lines
Answer» C. Address bus

Discussion

14.	If the main memory is of 8K bytes and the cache memory is of 2K words. Ituses associative mapping. Then each word of cache memory shall be_____.
A.	11 bits
B.	21 bits
C.	16 bits
D.	20 bits
Answer» D. 20 bits

Discussion

15.	. Computers use addressing mode techniques for ____________.
A.	giving programming versatility to the user by providing facilities as pointers to memory counters for loop control
B.	to reduce no. of bits in the field of instruction
C.	specifying rules for modifying or interpreting address field of the instruction
D.	All the above
Answer» E.

Discussion

16.	Floating point representation is used to store ______.
A.	Boolean values
B.	whole numbers
C.	real integers
D.	integers
Answer» D. integers

Discussion

17.	In signed-magnitude binary division, if the dividend is (11100) 2 and divisor is (10011) 2 then the result is
A.	(00100) 2
B.	(10100) 2
C.	(11001) 2
D.	(01100) 2
Answer» C. (11001) 2

Discussion

18.	Write Through technique is used in which memory for updating the data_____.
A.	Virtual memory
B.	Main memory
C.	Auxiliary memory
D.	Cache memory
Answer» E.

Discussion

19.	In computers, subtraction is carried out generally by
A.	1's complement method
B.	2's complement method
C.	signed magnitude method
D.	BCD subtraction method
Answer» C. signed magnitude method

Discussion

20.	The operation executed on data stored in registers is called
A.	Macro-operation
B.	Micro-operation
C.	Bit-operation
D.	Byte-operation
Answer» C. Bit-operation

Discussion

21.	The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to ______.
A.	the time its takes for the platter to make a full rotation
B.	the time it takes for the read-write head to move into position over the appropriate track
C.	the time it takes for the platter to rotate the correct sector under the head
D.	none of the above
Answer» B. the time it takes for the read-write head to move into position over the appropriate track

Discussion

22.	A Stack-organised Computer uses instruction of _____.
A.	Indirect addressing
B.	Two-addressing
C.	Zero addressing
D.	Index addressing
Answer» D. Index addressing

Discussion

23.	_________ register keeps tracks of the instructions stored in program storedin memory.
A.	AR (Address Register)
B.	XR (Index Register)
C.	PC (Program Counter)
D.	AC (Accumulator)
Answer» D. AC (Accumulator)

Discussion

24.	MIMD stands for _____.
A.	Multiple instruction multiple data
B.	Multiple instruction memory data
C.	Memory instruction multiple data
D.	Multiple information memory data
Answer» B. Multiple instruction memory data

Discussion

25.	The BSA instruction is______.
A.	Branch and store accumulator
B.	Branch and save return address
C.	Branch and shift address
D.	Branch and show accumulator
Answer» C. Branch and shift address

Discussion

26.	In a program using subroutine call instruction, it is necessary
A.	initialise program counter
B.	Clear the accumulator
C.	Reset the microprocessor
D.	Clear the instruction register
Answer» E.

Discussion

27.	Virtual memory consists of
A.	Static RAM
B.	Dynamic RAM
C.	Magnetic memory
D.	None of these
Answer» B. Dynamic RAM

Discussion

28.	Cache memory works on the principle of
A.	Locality of data
B.	Locality of memory
C.	Locality of reference
D.	Locality of reference & memory
Answer» D. Locality of reference & memory

Discussion

29.	If memory access takes 20 ns with cache and 110 ns without it, then the ratio(cache uses a 10 ns memory) is _____.
A.	93%
B.	90%
C.	88%
D.	87%
Answer» C. 88%

Discussion

30.	The circuit used to store one bit of data is known as_______.
A.	Register
B.	Encoder
C.	Decoder
D.	Flip Flop
Answer» E.

Discussion

31.	Translation from symbolic program into Binary is done in_____.
A.	Two passes.
B.	Directly
C.	Three passes.
D.	Four passes.
Answer» B. Directly

Discussion

32.	The multiplicand register & multiplier register of a hardware circuitimplementing booth's algorithm have (11101) & (1100). The result shall be ______.
A.	(812)10
B.	(-12)10
C.	(12)10
D.	(-812)10
Answer» B. (-12)10

Discussion

33.	An n-bit microprocessor has_____.
A.	n-bit program counter
B.	n-bit address register
C.	n-bit ALU
D.	n-bit instruction register
Answer» E.

Discussion

34.	The multiplicand register & multiplier register of a hardware circuit implementing booth's algorithm have (11101) & (1100). The result shall be
A.	(812) 10
B.	(-12) 10
C.	(12) 10
D.	(-812) 10
Answer» B. (-12) 10

Discussion

35.	In signed-magnitude binary division, if the dividend is (11100)2 and divisor is(10011)2 then the result is ______.
A.	(00100)2
B.	(10100)2
C.	(11001)2
D.	(01100)2
Answer» C. (11001)2

Discussion

36.	A three input NOR gate gives logic high output only when
A.	one input is high
B.	one input is low
C.	two input are low
D.	all input are high
Answer» E.

Discussion

37.	(2FAOC) 16 is equivalent to
A.	(195 084) 10
B.	(001011111010 0000 1100) 2
C.	Both (A) and (B)
D.	None of these
Answer» C. Both (A) and (B)

Discussion

38.	In a program using subroutine call instruction, it is necessary______.
A.	initialize program counter
B.	Clear the accumulator
C.	Reset the microprocessor
D.	Clear the instruction register
Answer» E.

Discussion

39.	The instruction ‘ORG O’ is a______.
A.	Machine Instruction.
B.	Pseudo instruction.
C.	High level instruction.
D.	Memory instruction.
Answer» C. High level instruction.

Discussion

40.	n bits in operation code imply that there are ___________ possible distinct operators
A.	2n
B.	2n
C.	n/2
D.	n2
Answer» C. n/2

Discussion

41.	Virtual memory consists of _______.
A.	Static RAM
B.	Dynamic RAM
C.	Magnetic memory
D.	None of these
Answer» B. Dynamic RAM

Discussion

42.	Content of the program counter is added to the address part of the instruction in order to obtain the effective address is called.
A.	relative address mode.
B.	index addressing mode.
C.	register mode.
D.	implied mode.
Answer» B. index addressing mode.

Discussion

43.	MRI indicates
A.	Memory Reference Information.
B.	Memory Reference Instruction.
C.	Memory Registers Instruction.
D.	Memory Register information
Answer» C. Memory Registers Instruction.

Discussion

44.	The main memory in a Personal Computer (PC) is made of_____.
A.	cache memory.
B.	static RAM
C.	Dynamic Ram
D.	bothA.and (B).
Answer» E.

Discussion

45.	The addressing mode used in an instruction of the form ADD X Y, is _____.
A.	Absolute
B.	indirect
C.	index
D.	none of these
Answer» D. none of these

Discussion

46.	Microinstructions are stored in control memory groups, with each group specifying a
A.	Routine
B.	Subroutine
C.	Vector
D.	Address
Answer» B. Subroutine

Discussion

47.	‘Aging registers’ are _______.
A.	Counters which indicate how long ago their associated pages have been referenced.
B.	Registers which keep track of when the program was last accessed.
C.	Counters to keep track of last accessed instruction.
D.	Counters to keep track of the latest data structures referred.
Answer» B. Registers which keep track of when the program was last accessed.

Discussion

48.	The BSA instruction is
A.	Branch and store accumulator
B.	Branch and save return address
C.	Branch and shift address
D.	Branch and show accumulator
Answer» C. Branch and shift address

Discussion

49.	An interface that provides a method for transferring binary information betweeninternal storage and external devices is called
A.	I/O interface
B.	Input interface
C.	Output interface
D.	I/O bus
Answer» B. Input interface

Discussion

50.	If the value V(x) of the target operand is contained in the address field itself, theaddressing mode is
A.	immediate.
B.	direct.
C.	indirect.
D.	implied.
Answer» C. indirect.

Discussion

Explore topic-wise MCQs in ENGINEERING SERVICES EXAMINATION (ESE).

(2FAOC)16 is equivalent to _____.

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

Logic X-OR operation of (4ACO) H & (B53F) H results

Assembly language ________.

. A binary digit is called a

can be represented in a signed magnitude format and in a 1’s complement format as

The average time required to reach a storage location in memory and obtainits contents is called the _____.

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

The maximum addressing capacity of a micro processor which uses 16 bit database &32 bit address base is

In computers, subtraction is carried out generally by____.

A group of bits that tell the computer to perform a specific operation is known as

Generally Dynamic RAM is used as main memory in a computer system asit______.

The communication between the components in a microcomputer takes place viathe address and

If the main memory is of 8K bytes and the cache memory is of 2K words. Ituses associative mapping. Then each word of cache memory shall be_____.

. Computers use addressing mode techniques for ____________.

Floating point representation is used to store ______.

In signed-magnitude binary division, if the dividend is (11100) 2 and divisor is (10011) 2 then the result is

Write Through technique is used in which memory for updating the data_____.

In computers, subtraction is carried out generally by

The operation executed on data stored in registers is called

The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to ______.

A Stack-organised Computer uses instruction of _____.

_________ register keeps tracks of the instructions stored in program storedin memory.

MIMD stands for _____.

The BSA instruction is______.

In a program using subroutine call instruction, it is necessary

Virtual memory consists of

Cache memory works on the principle of

If memory access takes 20 ns with cache and 110 ns without it, then the ratio(cache uses a 10 ns memory) is _____.

The circuit used to store one bit of data is known as_______.

Translation from symbolic program into Binary is done in_____.

The multiplicand register & multiplier register of a hardware circuitimplementing booth's algorithm have (11101) & (1100). The result shall be ______.

An n-bit microprocessor has_____.

The multiplicand register & multiplier register of a hardware circuit implementing booth's algorithm have (11101) & (1100). The result shall be

In signed-magnitude binary division, if the dividend is (11100)2 and divisor is(10011)2 then the result is ______.

A three input NOR gate gives logic high output only when

(2FAOC) 16 is equivalent to

In a program using subroutine call instruction, it is necessary______.

The instruction ‘ORG O’ is a______.

n bits in operation code imply that there are ___________ possible distinct operators

Virtual memory consists of _______.

Content of the program counter is added to the address part of the instruction in order to obtain the effective address is called.

MRI indicates

The main memory in a Personal Computer (PC) is made of_____.

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

Microinstructions are stored in control memory groups, with each group specifying a

‘Aging registers’ are _______.

The BSA instruction is

An interface that provides a method for transferring binary information betweeninternal storage and external devices is called

If the value V(x) of the target operand is contained in the address field itself, theaddressing mode is