The document contains a series of multiple-choice questions related to computer organization, specifically aimed at various competitive exams like UPSC, SSC, and banking exams. Key topics include the functions of CPU, ALU, registers, and memory components, as well as computer architecture and processing cycles. It serves as a study guide for understanding fundamental concepts in computer science and technology.

1. Computer Organization
Helpful for UPSC, SSC, Railway, IBPS, SBI, RBI, Bank PO/MT, RRBs, Specialist &
IT Officers, MBA, MCA, BBA, BCA, BBS, HOTEL Management Exams.
1. The ____ performs simple mathematics for the CPU.
(a) ALU (b) DIMM (c) BUS (d) Register (e) None of these
Ans. a
2. The ALU performs ____ operation.
(a) ASCII (b) Logarithm (c) Algorithm (d) Arithmetic (e) None of these
Ans. d
3. ALU stands for
(a) Algorithm and logarithm unit
(b) Arithmetic and logarithm unit
(c) Arithmetic and logical unit
(d) Algorithm and logical unit
(e) None of these
Ans. c
4. Which of the following is responsible for all types of calculations?
(a) ALU (b) Control Unit (c) Registers (d) BUS (e) None of these
Ans. a
5. The first computer architecture was introduced in [Allahabad Bank Clerk 2010]
(a) 1970 (b) 1968 (c) 1971 (d) 1973 (e) 1972
Ans. a
6. Another word for the CPU is [Allahabad Bank Clerk 2010]
(a) microprocessor (b) execute (c) microchip (d) decode (e) None of these
Ans. a
7. The microprocessor of a computer [IBPS Clerk 2011]
(a) does not understand machine language
(b) understands machine language and high level language
(c) understands only machine language
(d) understands only high level languages
(e) understands only assembly language
Ans. c
8. The microprocessor is the brain of the computer and is also called a [Allahabad Bank PO 2011]
(a) microchip (b) macrochip (c) macroprocessor(d) calculator (e) None of these
Ans. a
9. A microprocessor with 12 address lines is capable of addressing [LIC Assistant Officer 2009]
(a) 1024 location (c) 4096 location (b) 2048 location (d) 64 location
Ans. c

2. 10. The first microprocessor produced by Intel Corp and Texas instruments were used primarily to control
(a) calculators (b) cars (c) remotes (d) robotics (e) grinders
Ans. a
11. PCs are considered fourth-generation and contain [SBI PO 2014]
(a) information (b) data (c) vacuum tubes (d) microprocessors (e) transistors
Ans. d
12. Which of the following is a small microprocessor-based computer designed to be used by one person at
a time. [SBI Clerk 2014]
(a) netbook (b) super computer (c) all-in-one (d) notebook (e) personal computer
Ans. e
13. The CPU, also called the ____ when talking about PCs does the vast majority of the processing for a
computer. [Corporation Bank PO 2011]
(a) Macroprocessor (b) RAM (c) Memory System (d) Microprocessor (e) None of the above
Ans. d
14. Speed of processor is measured in ____.
(a) bit (b) byte (c) pathom (d) hertz (e) procetz
Ans. d
15. ____ is defined as the science of selecting and interconnecting hardware components to create
computers that meets functional, performance and cost goals. [Allahabad Bank Clerk 2008]
(a) Computer (b) Calculator (c) Calculating machine (d) Computer architecture (e) None of these
Ans. d
16. The main component(s) of a computer system is/are :
(a) Input devices (b) Output devices (c) Central Processing Unit (CPU) (d) All of the above
Ans. d
17. Which of the following(s) is/are the basic function(s) performed by computer?
(a) data control (b) data storage (c) data processing (d) data movement (e) All of these
Ans. e
18. Computers that control processes and accept data in a continuous [IBPS PO 2012]
(a) data traffic pattern (b) data highway (c) infinite loop (d) feedback loop (e) None of these
Ans. d
19. The system unit of a personal computer typically contains all of the following except ____.
(a) microprocessor (b) modem (c) motherboard (d) monitor (e) RAM
Ans. b
20. The main job of a CPU is to [Allahabad Bank PO 2011]
(a) carry out program instructions
(b) store data/information for further use
(c) process data and information
(d) Both (a) and (c)
(e) None of the above
Ans. d

3. 21. ‘C’ in CPU denotes [SBI PO 2013]
(a) Central (b) Common (c) Convenient (d) Computer (e) None of these
Ans. a
22. The CPU comprises of Control unit, Memory and ____ unit. [SBI PO 2013]
(a) Microprocessor (b) Arithmetic/Logic (c) Input (d) Output (e) None of the above
Ans. b
23. A CPU can directly understand ____ language.
(a) Machine (b)C (c) C++ (d) Java (e) HTML
Ans. a
24. The microprocessor is made up of millions of
(a) microchips (b) registers (c) transistors (d) All of these (e) None of these
Ans. c
25. ____ invented the microprocessor.
(a) Jonathn Smith (b) Marcian E Hoff (c) Herman H Goldstein (d) Joseph Jacquard (e) MyzoMayek
Ans. b
26. A computer cannot perform which of the following functions? [SBI Clerk 2012]
(a) Addition (b) Subtraction (c) Bake a cake (d) Division
Ans. c
27. Which are used to overcome the difference in data transfer speeds of various devices?
(a) Buffer registers (b) Speed enhancing circuitry (c) Bridge circuits (d) Multiple buses (e) None of the above
Ans. a
28. The hardware in which data may be stored for a computer system is called [IBPS PO 2012]
(a) registers (b) bus (c) control unit (d) memory (e) chip
Ans. d
29. Which of the following is the main circuit board of the system unit?
(a) graphics board (b) motherboard (c) sound board (d) control unit
Ans. b
30. Motherboard is also known as
(a) Electronic Board (EB)
(b) Simulating Board (SB)
(c) Printed Circuit Board (PCB)
(d) Combined Device Board (CDB)
(e) Controller Board (CB)
Ans. c
31. The CPU and memory are located on the ____.
(a) motherboard (b) sound board (c) keyboard (d) graphics board (e) DOS board
Ans. a

4. 32. ____ registers holds the information before it goes to the decoder.
(a) Control register (b) Bus register (c) Data register (d) Address register (e) None of these
Ans. c
33. Computer system is controlled by its ____.
(a) CPU (b) RAM (c) ROM (d) DVD (e) CD
Ans. a
34. Data processing cycle contains [BOB PO 2009, UCO Bank PO 2011]
(a) input cycle and output cycle
(b) input cycle, output cycle and processing cycle
(c) output cycle and processing cycle
(d) data mining and refining cycle
(e) None of the above
Ans. b
35. In CPU processing power is measured in [IBPS Clerk 2012]
(a) GIPS (b) LIPS (c) MIPS (d) Nano seconds (e) None of these
Ans. c
36. The CPU speed of a mini computer is approximately ____ kilo instructions per second (KIPS).
(a) 500 (b) 550 (c) 600 (d) 1250 (e) 1380
Ans. a
37. From which of the followings the performance of CPU can be measured?
(a) Clock Speed (b) IPC (c) DPI (d) Access Time (e) Video resolution
Ans. a
38. Transformation of input into output is performed by [SBI Associates Clerk 2008]
(a) peripherals
(b) memory
(c) storage
(d) input-output unit
(e) CPU
Ans. e
39. The clock rate of a processor is measured in [SBI PO 2011; Allahabad Bank Clerk 2010]
(a) Milliseconds
(b) Microhertz
(c) Megabytes or Gigabytes
(d) Nanoseconds
(e) Megahertz or Gigahertz
Ans. e
40. The ____ register holds machine instructions.
(a) Instruction
(b) Input
(c) BUS
(d) DOS
Ans. a

5. 41. The central processing unit is an example of [SBI Associates Clerk 2012]
(a) peripheral
(b) an output unit
(c) software
(d) a program
(e) hardware
Ans. e
42. Fan housing is used for the purpose of [PNB Clerk 2008]
(a) cooling the CPU
(b) cooling the monitor
(c) cooling the UPS
(d) cooling the software
(e) None of the above
Ans. a
43. All the logic and mathematical calculations done by the computer happen in/on the
[Allahabad Bank PO 2011]
(a) system board (b) central control unit (c) central processing unit (d) motherboard (e) memory
Ans. c
44. ____ are used to quickly accept, store and transfer data and instructions that are being used
immediately by the CPU.
(a) Registers (b) Caches (c) RAMs (d) Graphics (e) None of these
Ans. a
45. The ALU of a computer responds to the commands coming from ____.
(a) control section (b) primary memory (c) external memory(d) internal memory (e) None of these
Ans. a
46. Which part of the computer is used for calculating and comparing? [IBPS PO 2012]
(a) ALU (b) Control unit (c) Disk unit (d) Modem (e) None of these
Ans. a
47. The hard drive is normally located [SBI PO 2014]
(a) next to the printer
(b) plugged into the back of the computer
(c) underneath the monitor
(d) on top of the CD-ROM
(e) inside the system base unit
Ans. e
48. The comparison of data inside the arithmetic logic unit is referred to as a ____.
(a) logarithmic instruction (b) data flow (c) logical operation (d) combinational operation
Ans. c
49. ____ is/are the responsibility(is) of the logical unit in the CPU of a computer.
(a) To compare data (b) To predict output (c) To control information (d) To save work (e) All of the above
Ans. a

6. 50. The ALU performs ____ operations. [IBPS Clerk 2011]
(a) logical (b) ASCII (c) algorithm based (d) logarithm based (e) final operations
Ans. a
51. ____ is responsible for coordinating various operations using timing signals.
(a) Control unit (b) Arithmetic logic unit (c) Memory unit (d) Input/Output unit
Ans. a
52. Which of the following manages computer resources? [SBI Assistant and Stenographer Clerk 2012]
(a) ALU (b) BUS (c) Control unit (d) I/O unit (e) Secondary memory
Ans. c
53. A temporary storage area, attached to the CPU, for I/O operations is a ____.
(a) buffer (b) chip (c) register (d) core (e) cache
Ans. a
54. What is a set of information that defines the status of resources allocated to a process?
(a) arithmetic center (b) process control (c) register unit (d) processing unit (e) None of these
Ans. b
55. A machine cycle refers to
(a) fetching an instruction (b) decodingan instruction (c) executing an instruction (d) All of the above
Ans. d
56. Front-end processor is a ____ designed specifically to handle the communication processing task.
[Allahabad Bank PO 2010]
(a) ALU (b) control unit (c) CPU (d) register (e) None of these
Ans. c
57. ____ is a group of instruction that directs a computer?
(a) information (b) program (c) data (d) logic (e) None of these
Ans. b
58. An uniform interval of CPU time allocated for use in performing a task is known as [SBI PO 2012]
(a) real time (b) seek time (c) down time (d) time slice (e) None of these
Ans. d
59. This component is required to process data into information and consists of integrated circuits
[SBI Clerk 2011]
(a) Hard disks (b) RAM (c) CPU (d) ROM (e) None of these
Ans. c
60. Different components on the motherboard of a PC unit are linked together by sets of parallel electrical
conducting lines. What are these line? [IBPS PO 2012]
(a) Conductors (b) Buses (c) Connectors (d) Consecutives (e) None of these
Ans. b
61. Intel Pentium CPU is a ____ based processor.
(a) CISC (b) RISC (c) MISC (d) LISC (e) KISC
Ans. b

7. 62. The part of the CPU that access and decode program instructions and coordinates the flow of data
among various system components is the [Corporation Bank PO 2011]
(a) ALU (b) control unit (c) megahertz (d) motherboard (e) None of these
Ans. b
63. A group of wires running parallel to each other in between two connected computer parts and which
transfers information is called a [IBPS PO 2012; Allahabad Bank PO 2011]
(a) track (b) bus (c) cable (d) bundle (e) None of these
Ans. b
64. The system bus is made up of :
(a) control bus (b) address bus (c) data bus (d) All of the above (e) None of the above
Ans. d
65. The ALU makes use of ____ to store the intermediate results. [SBI Clerk 2010]
(a) accumulators (b) heap (c) None of these (d) registers (e) stack
Ans. a
66. A memory bus is mainly used for communication between
(a) processor and I/O devices
(b) processor and memory
(c) I/O devices and SMPS
(d) input devices and output device
(e) None of the above
Ans. b
67. Control unit of a digital computer is often called as the ____.
(a) nervous center (b) logical center (c) input center (d) system center
Ans. a
68. Which unit controls the movements of signals between CPU and I/O? [IBPS Clerk 2012]
(a) ALU (b) Control unit (c) Memory unit (d) Secondary storage (e) None of these
Ans. b
69. ____unit(s) in a single bus structure communicate at a time.
(a) One (b) Two (c) Three (d) Four (e) Five
Ans. b
70. A group of signal lines used to transmit data in parallel from one element of a computer to another is
(a) control bus (b) data bus (c) address bus (d) network
Ans. b
71. The name of the location of a particular piece of data is its [SBI Clerk 2009]
(a) address (b) memory name (c) storage (d) data location (e) None of these
Ans. a

8. 1. The organisation and interconnection of the various components of a computer system is
[Allahabad Bank Clerk 2008]
(a) architecture (b) networks (c) graphics (d) designing (e) None of these
2. The input unit of a computer [SSC CHSL 2009]
(a) feeds data to the CPU or memory (b) retrieves data from CPU
(c) directs all other units (d) All of the above
3. Which one of the following is not a data processing functions of a computer?
[SBI Clerk 2010; Allahabad Bank Clerk 2009]
(a) Gathering data (b) Processing data into information
(c) Analysing the data or information (d) Storing the data or information
4. Conversion of computer generated result into human acceptable form is a function of
[PNB PO 2010, UCO Bank Clerk 2009]
(a) CPU (b) input interface (c) output interface (d) RAM (e) None of these
5. Personal computers use a number of chips mounted on a main circuit board. What is the common name
for such boards? [SSC CHSL 2009]
(a) Daughterboard (b) Motherboard (c) Broadboard (d) None of these
6. The brain of any computer system is [SBI Clerk 2010; Allahabad Bank Clerk 2011]
(a) ALU (b) memory (c) CPU (d) control unit (e) None of these
7. Which functional component of a computer is responsible for the computing? [IBPS PO 2012]
(a) Input (b) Output (c) CPU (d) Memory (e) Storage
8. What is the full name of ‘CPU’? [BOI Clerk 2010]
(a) Central Processing Unit (b) Central Programming Unit
(c) Computer Processing Unit (d) Computer Programming Unit
9. The three main parts of the processor are [SBI Clerk 2012]
(a) ALU, Control Unit and Registers (b) ALU, Control Unit and RAM
(c) Cache, Control Unit and Register (d) Control Unit, Registers and RAM
10. A device used to bring data into a computer is called [IBPS Clerk 2012]
(a) ALU (b) input device (c) control unit (d) output device (e) None of these
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