Computer Organization and Architecture Basics MCQs with Answers Part 2. This mcqs most helpful in SPPU exam 2020 and in other Inportant Exams.
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1. What is function of MAR ?
a. Read/write a word form memory
b. Specify an address of memory
c. Contains the 8-bit op-code
d. Store address of next instruction
Ans - B
2. What is function of MBR ?
a. Read/write a word form memory
b. Specify an address from memory
c. Contains the 8-bit op-code
d. Store address of next instruction
Ans - A
3. What is function of PC ?
a. Read/write a word form memory
b. Specify an address from memory
c. Contains the 8-bit op-code
d. Store address of next instruction
Ans - D
4. What is function of IBR ?
a. Read/write a word form memory
b. Holds the right hand instruction from a word in a memory
c. Contains the 8-bit op-code
d. Store address of next instruction
Ans - B
5. Which register pair holds the result of multiplication operation?
a. AC,MQ
b. MQ,AC
c. AC,PC
d. PC,AC
Ans - A
6. What is a size of each register in IAS
a. 20
b. 10
c. 40
d. 30
Ans - A
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7. Which is the third generation computer?
a. IAS
B. IBM 7094
c. DEC PDP
d. 8086
Ans - C
8. What types of memories are used in second generation computers?
a. Magnetic core memories
b. Semiconductor memories
c. Optical memories
d. All of these
Ans - A
9. Which is first microprocessor developed by Intel ?
a. 4004
b. 8008
c. 8086
d. 8080
Ans - A
10. Which is first general purpose microprocessor developed by Intel?
a. 4004
b. 8008
c. 8086
d. 8080
Ans - B
11. Which of the following is an input device?
a. Keyboard
b. Monitor
c. Printer
d. Hard Disk
Ans - A
12. Which of the following is an output device?
a. Keyboard
b. Joy stick
c. Printer
d. Hard Disk
Ans - C
13. What is the significance of data bus?
a. To determine number of bits to be transferred at a time.
b. Maximum memory capacity of the system
c. To transfer the peripheral address.
d. Control of a system
Ans - A
14. What is the significance of control bus?
a. To determine number of bits to be transferred at a time.
b. Maximum memory capacity of the system
c. To transfer the peripheral address.
d. To generate and transfer the control signals
Ans - D
15. Which system bus decides the maximum memory accessing capacity?
a. Data bus
b. Control bus
c. Address bus
d. External data bus
Ans - C
16. Which number system is used in computer?
a. Binary
b. Decimal
c. Hex
d. Octal
Ans - A
17. Which are the basic data types of computer?
a. Fixed and floating point numbers
b. Fixed, Floating and Character
c. Floating and Character
d. None of these
Ans - A
18. MSB=0, means
a. Number is positive
b. Number is negative
c. Both a and b
d. None of these
Ans - A
19. MSB=1, means
a. Number is positive
b. Number is negative
c. Both a and b
d. None of these
Ans- B
20 .Which representation is commonly used by computer?
a. Sign Magnitude representation
b. 1’s complement representation
c. 2’s complement representation
d. 9’s complement representation
Ans - C
21. Which representation give two forms of zero?
a. Sign Magnitude representation
b. 1’s complement representation
c. 2’s complement representation
d. 9’s complement representation
Ans -A
22. What is the range of 16-bit sign binary number?
a. +32767 to -32768
b. -32767 to +32768
c. +32767 to -32767
d. +32768 to -32768
Ans - B
23. In Booth’s algorithm if both Multiplier and Multiplicand are positive nos., what will be the sign bit of final product?
a. 0
b. 1
c. positive
d. negative
Ans - A
24. In Booth’s algorithm if both Multiplier and Multiplicand are negative nos., what will be the sign bit of final product?
a. 0
b. 1
c. positive
d. negative
Ans - A
25. In Booth’s algorithm if both Multiplier and Multiplicand are positive nos., what will be the sign of final product?
a. 0
b. 1
c. positive
d. negative
Ans - C
26. In Booth’s algorithm if MSB of both Multiplier & Multiplicand is 0 then, what will be the sign of final product?
a. 0
b. 1
c. positive
d. negative
Ans - C
27. In Booth’s algorithm if MSB of both Multiplier & Multiplicand is 1 then, what will be the sign of final product?
a. 0
b. 1
c. positive
d. negative
Ans - C
28. In Booth’s algorithm, if Q0=1 and Q-1=1 then it will perform which operation,
a. A=A-M
b. A=A+M
c. Arithmetic right shift of A, Q and Q-1
d. A=M-A
Ans - C
29. In Booth’s algorithm, if Q0=0 and Q-1=1 then it will perform which operation,
a. A=A-M
b. A=A+M
c. Arithmetic right shift of A, Q and Q-1
d. A=M-A
Ans - B
30. In Booth’s algorithm, for Multiplier=10000 and Multiplicand =1100101.What will be the size of A register?
a. 4
b. 5
c. 3
d. 6
Ans - B
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