Computer Architecture & Engineering MCQs

Computer Architecture & Engineering MCQs

Our experts have gathered these Computer Architecture & Engineering MCQs through research, and we hope that you will be able to see how much knowledge base you have for the subject of Computer Architecture & Engineering by answering these 100+ multiple-choice questions.
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1:

                     

What will replace the "?" sign in the given characteristic table of SR f‌lip-f‌lop, if O(t+1) is the binary state of output after the occurrence of a clock transition (referred to as next state)?

A.  

Always 0


B.  

lndeterminate(could be 0 or 1) 


2:

How many characters per second (CPS) can be transmitted over a 1000-baud line with a character code of 8 bits. in the synchronous serial transmission mode?


A.  

150 cps 

B.  

109 cps 

C.  

125 cps 

D.  

120 cps


3:

Computer Architecture & Engineering

Use the table in the given image to find the 9-bit microoperation field for the microoperation given on top of the table.

A.  

111001000  

B.  

000111001

C.  

111000001

D.  

110000111

4:

Using the given table, convert the following symbolic micro operations to binary.

SHL, DRTAR, WRITE

A.  

100101111

B.  

011101111 

C.  

011101111 

D.  

Cannot be converted.  

5:

What is the Excess-3 Gray code for the given number?

A.  

111011111010 

B.  

 101011101111

C.  

111011111010

D.  

101011111110

6:

Suppose the content of a 4obit register is 1010. The register is shifted five times to the right with serial input being 10110. What is the content of the register after five shifts?


A.  

0101 

B.  

 0010   

C.  

0110

D.  

 0111

7:

What will be the output of the given logic gate?

A.  


B.  


C.  

3

D.  

4

8:

Suppose you have to multiply two 20 x 20 matrices using vector processor. To calculate the product matrix. how many multiply-add operations are required?


A.  

8000 

B.  

6000

C.  

4000

D.  

2000

9: What will be the sum of the following floating-point number? 0.6374980 x102 and 0.1580000 x 10 -1

A.   0.7963400 x 102

B.   0.6376560 x 10-1

C.   0.6376560 x 102

D.   0.7963400 x10-1

10:

Which of the following is the correct sum of product form for the given K-Map (Karnaugh map)?

A.  

ABC 

B.  

(~A)D  

C.  

AD 

D.  

 (“A1081)

11: Which of the following is the component of a CPU (Central Processing Unit)?

A.   Data Bus

B.   Keyboard

C.   Mouse

D.   TouchPad

12: A memory containing 32K words will require different addresses.

A.   32,380

B.   32,384

C.   32,768

D.   32,385

13: A/An instruction is recognized by the operation code 111 with a 1 in the first bit of instruction.

A.   Memory « reference

B.   Input - output

C.   Register — reference

14:

State whether the following statement is true or false.

A micro-program sequencer executes a micro-instruction.


A.  

True 

B.  

False 

15: How many clock cycles are required to process 100 tasks in a six-segment pipeline?

A.   600 clock cycles

B.   106 clock cycles

C.   105 clock cycles

D.   601 clock cycles

16: The speed of a CPU is measured in .

A.   revolutions per minute

B.   hertz

C.   kbps

D.   mbps

17:

State whether the following statement is true or false.

Physical memory is divided into several smaller, equal-sized parts called pages.


A.  

True

B.  

False 

18:

Which of the following memory reference instructions has the symbolic description given in the image:

where PC = program counter and AR = address register?

A.  

LDA (Load Accumulator)  

B.  

BSA (Branch and Save Return Address)   

C.  

 STA (Store Accumulator)

D.  

BUN (Branch Unconditionally) 

19:

Convert the following arithmetic expression from inf‌ix to RPN (Reverse Polish Notation)

A.  

ABCDE+‘+


B.  

ABCDEFG+'+

C.  

ABCDE+‘+'FG'/ 

20:

Which of the following options is the logic diagram of half-adder?

A.  


B.  


C.  


D.  

4

21: A multiprocessor system with a common shared memory is called a multiprocessor system.

A.   distributed memory

B.   tightly coupled

C.   loosely coupled

22: TTL in digital circuits stands for

A.   Transistor-transistor logic

B.   Transmission-transistor logic

C.   Transistor-transmission logic

D.   Transistor-transformlogic

23:

Is the following register transfer statement correct?

A.  

Yes 

B.  

No 

24:

Which of the following options allows a direct memory access (DMA) controller to transfer data words one at a time?


A.  

 Bus grant 

B.  

Bus request  

C.  

Burst mode

D.  

 Cycle stealing mode 

25: In which of the following methods, only the cache location is updated during a write operation?

A.   Write-back

B.   Write-through

C.   Both a and b

26: Compute the 2's complement of 001 using 6 bit word.

A.   110

B.   111

C.   111110

D.   111111

27: Which of the following options is used in stack organized architecture?

A.   Three-address instructions

B.   Two-address instructions

C.   One-address instructions

D.   Zero-address instructions

28:

Assume a small crossbar switch network is used to connect two processors and f‌ive memory modules.

How many total switches (switch points) should be there?


A.  

Two 

B.  

Four 

C.  

Six 

D.  

Eight

E.  

Ten 

29: In a computer, is a non-volatile memory

A.   Static RAM

B.   Dynamic RAM

C.   EEPROM

D.   Cache

30:

If an instruction is read from memory then compute the effective address in relative address mode

when the content of the Program counter is 824 and the address part of the instruction contains 24.


A.  

848 

B.  

849 

C.  

850

D.  

851

31:

Which of the following Flynn‘s classif‌ications represents an organization in which there is a common control unit that supervises many processing units?


A.  

Single instruction stream. single data stream (SISD)    

B.  

 Single instruction stream. multiple data stream (SIMD)

C.  

Multiple instruction stream. single data stream (MISD)

D.  

Multiple instruction stream. multiple data stream (MIMD)

32:

What will be the output, if

Multiplicand= 10111

Multiplier: 10011?


A.  

110010101 

B.  

110110101 

C.  

1011110011

D.  

001100110

33:

There is an 8-bit register AR with initial value 11000101. What would be the f‌inal value in the register AR after performing four bitwise operations. i.e. logical left shift. right circular shift. logical right shift. and left circular shift?


A.  

01000100 

B.  

00100010

C.  

01011100

D.  

10001010

34: Which of the following flip-flops can be used in Master-Slave mode?

A.   S-R Flip-f‌lop

B.   T Flip-flop

C.   J-K Flip-flop

D.   D Flip-f‌lop

35: Which of the following Interrupts will occur in case of stack overflow?

A.   External Interrupts

B.   Internal Interrupts

C.   Software Interrupts

36: Which ofthe following options can be used for the fetch segment of an instruction pipeline?

A.   MRU (Most Recently Used)

B.   LRU (Least Recently Used)

C.   LIFO (Last In First Out) buffer

D.   FIFO (First In First Out) buffer

37:

From the options given in the image. select the correct answer for converting the following arithmetic expression from reverse polish notation to inf‌ix notation:


ABCDEFG+

A.  


B.  

2

C.  

3

D.  

4

38: Which of the following statements is false?

A.   Hardwired control is faster than micro-programmed control.

B.   In hardwired control, memory is not used whereas in the case of micro-programmed control, control memory is used for address storage.

C.   Hardwired control is more f‌lexible than micro-programmed control.

D.   As compared to hardwired control, micro-programmed control handles large/complex instruction

39: Two registers with initial values are given below:

A.   1100

B.   1010

40: What will be the value in register A after performing selective set operation?

A.   1110

B.   1100

C.   1001

D.   0010

41: The status bits in the represent the current state of the CPU.

A.   memory address

B.   accumulator

C.   branch and save address

D.   program status word

42:

There are four 8-bit registers. as follows:

A.  

AR=10011111


B.  

BR=O1000111

C.  

CR=00110011

D.  

DR=10101011

43:

What will be the value in the AR register after the execution of the sequence of micro operations given in the image?

A.  

11100110 

B.  

00100011 

C.  

11000011 

D.  

11100011

44: Convert the given hexadecimal number to a decimal number.

A.   1777

B.   1296

C.   1728

D.   1776

45:

What will be the value ofX in the given f‌igure when A=1101, S=1, IR=1 and IL=0?

Here S is the selection input, and IR and IL are serial inputs.

A.  

1011 

B.  

1010 

C.  

0011

D.  

0101

46:

What will be the value of X after performing the given operations?

A.  

X=(A+B)‘(C+D) 

B.  

X=AC+BD   

C.  

X=AB+CD

D.  

X=(A+C)“(B+D)

47: What will be the output after solving the following Boolean function using Karnaugh map? F(A,B,C) = E(3,4,6,7)

A.   BC+AC

B.   B'C+AC'

C.   BC'+AB

D.   AB'+BC

48: How would you represent 728. a decimal number, in octal number system?

A.   1110

B.   1220

C.   1440

D.   1330

49: How many address lines are required for a 2M x 64 memory unit?

A.   24

B.   32

C.   21

D.   11

50:

Which of the given options are the correct demonstrations of instruction format

A.  

a

B.  

 b

C.  

 c

D.  

 d