CPU MCQ. Computer cabinet & microprocessor related multiple choice objective Questions and answers pdf for competitive exams.
CPU MCQ
1. CPU speed of a personal computer is
a) 32 KIPS
b) 100 KIPS
c) 1 MIPS
d) None of these
Ans. b
2. A CPU contains
a) A card reader and a printing device
b) an analytical engine and a control unit
c) a control unit and an arithmetic logic unit
d) an arithmetic logic unit and a card reader
Ans. c
3. C in CPU denotes
a) Central
b) Common
c) Convenient
d) Computer
Ans. a
4. CPU consists of
a) Input, output and processing
b) Control unit, primary storage & secondary storage
c) Control unit, arithmetic-logic unit, primary storage
d) None of these
Ans. c
5. What is control unit function in CPU
a) To transfer data to primary storage
b) To store program instructions
c) To perform logic functions
d) To decode program instructions
Ans. c
6. Which memory is used in CPU
a) RAM
b) ROM
c) Registers
d) Hard disk
Ans. c
7. A device, which is not connected to CPU is called as ________ device.
a) Offline
b) Online
c) off device
d) not working
Ans. a
8. The technology that stores only the essential instructions on a microprocessor chip and thus enhances its speed is referred to as______
a) RISC
b) ALU
c) Logo
d) Command
Ans. a
9. Which part of the computer is directly involved in executing the instructions of the computer program?
a) Processor
b) RAM
c) ROM
d) Hard disk
Ans. a
10. The part of micro-processor which performs number crunching and logical comparisons is called _______ .
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) Cache
(d) timer
Ans. a
11. ALU stands for ______.
(a) Arithmetic and Logic University
(b) Arithmetic and Local Unit
(c) Arithmetic and Logic Unit
(d) Analysis and Logic Unit
Ans. c
12. The part of micro-processor used for storing values needed for next cycle of processing is called ______ .
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) clock
(d) timer
Ans. b
13. The part of micro-processor holding data which is needed for forthcoming cycles of processing is called ______ .
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) Cache
(d) timer
Ans. c
14. The part of micro-processor which maintains a clock and induces each cycle of processing through a pulse is called ______.
(a) Arithmetic and Logic Unit (ALU)
(b) Register
(c) Cache
(d) timer
Ans. d
15. The number of floating point operations carried out by a micro-processor in one second is called ______.
(a) FLOPS
(b) timer
(c) clock
(d) frequency
Ans. a
16. The number of cycles of operations performed by a processor per second is called its _____.
(a) bus speed
(b) connection speed
(c) clock speed
(d) baud rate
Ans. c
17. Whereas clock speed is the gross number of operations performed by a processor per second, FLOPS represents ________ of processor per second.
(a) wasted time
(b) effective out turn
(c) wasted cycles
(d) clock speed
Ans. b
18. A floating point operation may require ______ clock cycle to complete.
(a) just one
(b) less than one
(c) zero
(d) more than one
Ans. d
19. Intel Pentium processor was preceded byIntel processor.
(a) Core 2 duo
(b) 80486/ 486
(c) Core i3
(d) Core i5
Ans. b
20.Which is an internal power supply units of CPU?
A) CVT
B) UPS
C) SMPS
D) Stablizer
Ans. c
21. From the following which is known as the administrative section of the computer system?
a) Control Unit
b) Input Unit
c) RAM
d) Central Processing Unit
Ans. d
22. Component of CPU which is responsible for comparing the contents of two pieces of data is
a) ALU
b) CU
c) Memory
d) Register
Ans. a
23. When arithmetic, logic and control unit of a computer are combined into a single unit, it is known as
a) Central processing unit
b) memory unit
c) I/O unit
d) Operating unit
Ans. a
24. Brain of a computer is called
a) CPU
b) Software
c) Herd disk
d) Memory
Ans. a
25. A CPU contains
a) A card reader & a printing device
b) An analytical engine & a control unit
c) A control unit & an arithmetic logic unit
d) None of these
Ans. c
26. Movement of signals between CPU & I/O is
a) ALU
b) Control unit
c) Memory unit
d) Secondary storage
Ans. b
27. The part of the CPU that access & decodes program instructions, & coordinates the flow of data among various system components is the
a) Control unit
b) ALU
c) Megahertz
d) Motherboard
Ans. b
28. What does CPU stands for
a) Central processing unit
b) Central process unit
c) Central printing unit
d) Central peripheral unit
Ans. a
29. CPU consists of following parts
a) CU and main memory
b) CU and ALU
c) Main memory and storage
d) Operating system and application
Ans. b
30. Input is modified into output by
a) peripherals
b) Memory
c) CPU
d) Storage
Ans. c
31. Part of CPU which coordinates all functions of computer & other components
a) Mother board
b) Coordination board
c) Control unit
d) ALU
Ans. c
32. The function of CPU is
a) To provide external storage of text
b) To communicate with the operator
c) Ro read, interpret & process the information & instructions
d) Assembler
Ans. c
33. This components is required to process data into information & consist of integrated circuits
a) CPU
b) Hard disk
c) RAM
d) ROM
Ans. a
34. Memory unit is one part of
a) Control unit
b) CPU
c) Input device
d) Output device
Ans. b
35. CPU speed of a personal computer is
a) 32 KIPS
b) 100 KIPS
c) 1 MIPS
d) None of these
Ans. b
36. CPU is expanded as _______.
(a) Central Power Unit
(b) Critical Processing Unit
(c) Central Processing Unit
(d) Cerebral Processing Unit
Ans. c
37. ______ is called the “Brain of Computer”.
(a) CPU
(b) monitor
(c) keyboard
(d) mouse
Ans. a
38. The main components housed in CPU are ______ .
(a) micro-processor
(b) Mother board, Random Access Memory (RAM)
(c) Secondary storage devices (hard disk,CD/DVD drive, floppy disk drive, etc.)
(d) all of them
Ans. d
39. In the CPU of a computer, _______ delivers power supply to all the components at appropriate voltages.
(a) Hard Disk
(b) Mother Board
(c) Switch Mode Power Supply (SMPS)
(d) DVD drive
Ans. c
40. ______ produces output/results after processing the input data.
(a) input unit
(b) Central Processing Unit (CPU)
(c) output unit
(d) all of them
Ans. b