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CMRL free solved sample placement papers with answers, CMRL latest placement papers, CMRL model questions for practice, CMRL written test pattern and CMRL junior engineers recruitment details,CMRL sample questions for practice, CMRL computer engineering objective type questions with answers
1. A computer can be defined as an electronic device which can
(a) carry out arithmetical operations
(b) carry out logical functions
(c) do complicated calculations
(d) accept and process data by implementing sequentially a set of stored instructions (Ans)
(e) present information to the operator on a visual display unit.
2. Stored instructions and data in a digital computer consist of :
(a) alphabets
(b) numerals
(c) characters
(d) scripts
(e) bits (Ans)
3. Binary coded decimal (BCD) numbers express each decimal unit digits as
(a) binary digits
(b) digits and strings
(c) nibble (Ans)
(d) word
(e) byte
4. The central processing unit
(a) is operated from the control panel
(b) is controlled by input data as it enters the system
(c) is controlled by the auxiliary storage unit
(d) controls all input, output and processing. (Ans)
5. Modern computers process
(a) decimal numbers
(b) digits and strings
(c) hexadecimal number
(d) binary numbers (Ans)
6. The sequence of instructions that tell the computer how to process the data is called
(a) flow chart
(b) control unit
(c) program (Ans)
(d) address
7. A hexadecimal odometer displays F 52F. The next reading will be
(a) F 52E
(b) G 52F
(c) F 53F
(d) F 53O (Ans)
8. Integrated circuits, solid state technology was used in following generations of computers :
(a) first
(b) second
(c) third (Ans)
(d) fourth
(e) fifth
9. A computer is capable of performing almost any test, provided that it can be
(a) coded
(b) memorized
(c) analyzed
(d) reduced to a series of logical series (Ans)
10. The binary information contained in computer is referred to as :
(a) word
(b) memory
(c) program (Ans)
(d) instruction
(e) code
11. The computers that dealt with discrete data are called
(a) discrete computers
(b) digital computers (Ans)
(c) analog computers
(d) hybrid computers
12. Retaining data for future reference is called
(a) storing (Ans)
(b) sorting
(c) memorizing
(d) outputting
13. The hexadecimal system is widely used in analyzing and programming in
(a) analog computers
(b) binary computers
(c) decimal computers
(d) micro computers (Ans)
14. The term 'word' in computer technology refers to
(a) bits formed into groups (Ans)
(b) coded instructions
(c) memory size
(d) language used
15. A group of electronic, magnetic or mechanical devices that store data is called
(a) register (Ans)
(b) address
(c) program
(d) software
16. The ASCII code is a 7 bit code for
(a) letters
(b) numbers
(c) decimals
(d) alpha numerics (Ans)
17. If one were to allow 6 bits per symbol, the following numbers of different symbols could be encoded
(a) 16
(b) 2
(c) 64 (Ans)
(d) 80
18. The main advantage of hexadecimal numbers is the case of conversion from hexadecimal to
(a) decimal
(b) binary (Ans)
(c) octal
(d) BCD.
19. The different memory locations are identified by hexadecimal numbers is called
(a) addresses (Ans)
(b) hex-dabble
(c) BCD numbers
(d) ASCII code
20. A collection of software that controls the overall operation of a computer is called
(a) application software
(b) packaged program
(c) system software
(d) operating system (Ans)
21. In order that a digital compute be freely programmed, it is provided with the following type memory :
(a) core memory
(b) RAM (Ans)
(c) ROM
(d) EPROM
22. Microprocessor is based on
(a) thermionic valves
(b) transistors
(c) integrated circuits
(d) chips. (Ans)
23. Storage of 1 K means that it has following number of storage locations :
(a) 1000
(b) 964
(c) 1024 (Ans)
(d) 1032
24. A 64 K bit word computer has
(a) 64 * 1000 bits
(b) 64 * 1012 bits
(c) 64 * 1020 bits
(d) 64 * 1024 bits (Ans)
25. Which of the following is the most troublesome in computer system ?
(a) CPU
(b) CRT
(c) Printer
(d) Floppy disk (Ans)
26. If electrical power supply to a computer system is inadvertently disrupted, the serious damage would occurs to
(a) CPU
(b) disk (Ans)
(c) CRT
(d) Printer
27. The operation of the ALU is directed by :
(a) The ALU itself
(b) program
(c) registers
(d) memory unit
(e) control unit (Ans)
28. Which of the following is not a hard ware
(a) card
(b) magnetic tape
(c) printer
(d) assembler (Ans)
(e) CRT
29. A digital computer system consists of a CPU interfaced with
(a) input devices
(b) auxiliary storage
(c) output devices
(d) all of these (Ans)
30. Memory is divided into many numerically addressed
(a) logics
(b) locations (Ans)
(c) codes
(d) cells
(e) addresses
31. The heart of a digital computer is
(a) control unit (Ans)
(b) memory unit
(c) logical unit
(d) visual display unit
32. The smallest logical data entity in organizing of data for computer processing is
(a) file
(b) field (Ans)
(c) record
(d) data base
33. A collection of related fields in data organization is called
(a) group
(b) register
(c) file
(d) organization (Ans)
(e) record
34. A group of related characters that are treated as a single unit is called
(a) data
(b) information
(c) field (Ans)
(d) record
35. The use of computers to create, view, edit, retrieve and print text materials is called
(a) word processing (Ans)
(b) line printing
(c) inventory control
(d) typing
36. The sequence of instructions telling the machine to perform a particular sequence of operations is called
(a) program (Ans)
(b) hardware
(c) algorithm
(d) emulator
37. Errors in computer results could be due to
(a) encoding of data
(b) transmission of data
(c) manipulation of data
(d) all of the above (Ans)
38. The data obtained by counting are called
(a) digital data
(b) continuous data
(c) analog data
(d) discrete data (Ans)
39. Which type of computer operates by directly counting numbers
(a) special purpose
(b) analog
(c) digital (Ans)
(d) hybrid
40. A group of characters which are treated s single entity
(a) bit
(b) byte
(c) word (Ans)
(d) address
41. A string of binary digits treated as a unit is called
(a) bit
(b) byte (Ans)
(c) word
(d) character
42. Both the ALU and control section have special-purpose storage location called
(a) address
(b) registers (Ans)
(c) accumulators
(d) decoders
43. Octal number system uses fundamental digits 0 to 7.1248 (octal) in a decimal equivalent is equal to :
(a) 8010
(b) 8210
(c) 8410 (Ans)
(d) 8610
44. 9210 (decimal) in octal number system is equivalent to
(a) 1288
(b) 1308
(c) 1328
(d) 1348 (Ans)
45. Four-digit binary quantity 1001 represented in the decimal system by
(a) 7
(b) 9 (Ans)
(c) 11
(d) 13
46. Binary number 101101 is equivalent, in decimal form, to
(a) 41
(b) 43
(c) 45 (Ans)
(d) 47
47. Number 37310 is equivalent in binary system to
(a) 101110101 (Ans)
(b) 100110101
(c) 101010101
(d) 101110011
48. Which of the following is termed as minimum error code ?
(a) binary code
(b) gray code (Ans)
(c) excess 3-code
(d) octal code
49. Hexadecimal can express in one digit, what is done by ................. binary number of binary digits.
(a) one
(b) two
(c) four (Ans)
(d) eight
50. The sequence of instructions that tell the computer how to process data is called
(a) flow chart
(b) CPU
(c) control unit
(d) program (Ans)
51. CRAY- 1 is a
(a) microcomputer
(b) minicomputer (Ans)
(c) mainframe computer
(d) super computer
52. Most mainframe computers are basically
(a) 4 bit machine
(b) 8 bit machine
(c) 16 bit machine
(d) 32 bit machine (Ans)
53. In EBCDIC (extended binary coded decimal interchange code),each character is denoted by
(a) 3 bits
(b) 4 bits
(c) 5 bits
(d) 7 bits
(e) 8 bits (Ans)
54. PROM is a memory
(a) to write only
(b) to read and writ only
(c) to read only
(d) in which data can be altered occasionally (Ans)
55. Which of the following is not a magnetic memory :
(a) core
(b) disk
(c) flip-flop (Ans)
(d) tape
56. Which of the following is a volatile memory ?
(a) magnetic core
(b) disk
(c) drum
(d) tape
(e) flip-flop (Ans)
57. The term daisy wheel is connected with
(a) CPU
(b) core memory
(c) magnetic tape
(d) printers (Ans)
(e) visual display unit
58. Which of the following is a RAM ?
(a) tape
(b) drum
(c) core (Ans)
(d) disc
(e) flip-flop
59. Permanent data like log tables are stored in a computer on a
(a) drum
(b) tape
(c) core
(d) RAM
(e) ROM (Ans)
60. Pick out which does not belong to family
(a) ferrite core (Ans)
(b) cassette
(c) drum
(d) tape
61. One disadvantage of RAM is that it is
(a) slow
(b) volatile (Ans)
(c) inaccurate
(d) bulky
62. Buffer registers form part of
(a) data bus
(b) CPU
(c) main memory
(d) slow input-output devices (Ans)
63. A display panel is associated with
(a) main memory
(b) ALU
(c) data bus
(d) CPU
(e) control unit (Ans)
64. Floppy disk in a computer system is
(a) hardware (Ans)
(b) software
(c) compiler
(d) core memory
65. One or more punches in a single column on the Hollerith card represents a
(a) bit
(b) byte
(c) word
(d) character (Ans)
66. Hollerith code is used for
(a) CPU
(b) magnetic drums
(c) paper tape
(d) floppy drives
(e) punched card (Ans)
67. Each Hollerith card can store
(a) 12 characters
(b) 40 characters
(c) 80 characters (Ans)
(d) 96 characters
68. Tracks per drum on magentic drum storage unit may be as low as
(a) 12
(b) 40
(c) 61
(d) 100
(e) 144 (Ans)
69. Tracks per drum on magnetic drum may be as high as
(a) 144
(b) 220
(c) 512
(d) 800
(e) 6144 (Ans)
70. Packing density on magnetic drum is of the order of
(a) 20 bits/cm
(b) 100 bits/cm
(c) 400 bits/cm (Ans)
(d) 1000 bits/cm
71. The purpose of organizing data items with like characteristics into groups or classes is called
(a) sorting
(b) storing
(c) classifying (Ans)
(d) processing
72. The seek time in the case of fixed head magnetic disk is
(a) 20 ms
(b) 10 ms
(c) 5 ms
(d) 2 ms
(e) zero (Ans)
73. Some magnetic disks are very large. Its diameter may be around
(a) 0.25 m
(b) 0.5 m
(c) 1.2 m (Ans)
(d) 2 m
74. Which of the following memories will be used to store variable quantities or data ?
(a) RAM (Ans)
(b) ROM
(c) PROM
(d) EPROM
75. Term 'software' is related to
(a) electronic contacter
(b) electrical circuit
(c) programming (Ans)
(d) electromechanical relays.
76. If a computer uses 500 characters, how many bits this system require to give a different code to all characters ?
(a) 5 bits
(b) 7 bits
(c) 8 bits
(d) 9 bits
(e) 10 bits (Ans)
77. Which of the following does not represent peripheral data storage device ?
(a) punched tape (Ans)
(b) magnetic tape
(c) magnetic disk
(d) magnetic drum
78. The magnetic tape usually has the following number of tracks :
(a) 2
(b) 4
(c) 7 to 9 (Ans)
(d) 16
79. The width of magnetic tape is generally
(a) 5 mm
(b) 10 mm
(c) 12.5 mm (Ans)
(d) 25 mm
80. The thickness of magnetic tape is
(a) 1 μm
(b) 12 μm
(c) 26 μm
(d) 43 μm
(e) 53 μm (Ans)
81. A drum can store about
(a) 1 million bytes
(b) 10 million bytes (Ans)
(c) 100 million bytes
(d) 1000 million bytes
82. In computer terminology, an assembler means
(a) a person who assembles the parts
(b) a program (Ans)
(c) a person who writes program
(d) a high level language.
83. Which of the following translates the written FORTRAN program into machine language ?
(a) programmer
(b) operator
(c) complier (Ans)
(d) card reader
84. The term 'Glich' in a computer terminology refers to
(a) an error condition either in hardware or in software that causes malfunction (Ans)
(b) direct access storage devices
(c) error correcting code
(d) digital to analog converter
85. BASIC is a
(a) high level language (Ans)
(b) software language
(c) interpreter language
(d) low level language
86. The process of translation from high level language to machine code is carried out by a microprocessor under the control of a very elaborate program called
(a) BASIC
(b) CORAL
(c) Complier (Ans)
(d) FORTRAN
(e) COBOL
87. Which of the following is the fastest input/output device :
(a) teletype writer
(b) visual display unit
(c) magnetic floppy disk (Ans)
(d) magnetic tape cassette
88. Which of the following is not the input device to the computer :
(a) paper tape reader
(b) key board
(c) video monitor (Ans)
(d) magnetic floppy disk.
89. The symbol (=) in the basic language
(a) is used for equating two expressions
(b) means "be replaced by" (Ans)
(c) is never used
(d) represents a LET statement
90. Pick up the legal character of BASIC assignment
(a) AB
(b) 4C
(c) TWO
(d) Z6 (Ans)
91. Which of the following is not the out put device to the computer ?
(a) paper tape reader (Ans)
(b) paper tape punch
(c) video monitor
(d) matrix impact printer
92. Assembly languages
(a) need no translation
(b) use binary numbers only
(c) use English and mathematical symbols
(d) use mnemonics (Ans)
(e) are somewhat like high level languages
93. High level languages
(a) need no translation
(b) use binary numbers only
(c) use English and mathematical symbols (Ans)
(d) are understood directly by computer
94. An assembler in computers refers to a
(a) program (Ans)
(b) language
(c) hardware
(d) person
95. Which of the following device is not associated with computer ?
(a) mice (Ans)
(b) printer
(c) VDU
(d) keyboard
96. A complier is
(a) a computer hardware combination
(b) a program which translates from one high level language to another one
(c) a program which translates from high level language to machine language (Ans)
(d) none of the above
97. Match the following :
(a) OCR (i) a storage device
(b) Plotter (ii) a device used to read data directly from paper
(c) Floppy disk (iii) an input device used in graphics
(d) Witty mouse (iv) an output device used in graphics
Ans : a - ii, b - iv, c - i , d - iii
98. Match the following :
(a) Input unit (i) performs data mani-pulation
(b) Output unit (ii) feeds data into CPU
(c) Memory unit (iii) directs other units to perform specific task
(d) Arithmetic unit (iv) stores program and data
(e) Control unit (v) communicates response of the computer to the user
Ans : a - ii, b - v, c - iv , d - iii, e - i
99. Match the following :
(a) W. Oughtred (i) Bones
(b) PASCLAL (ii) ENIAC
(c) NAPIER (iii) Slide rule
(d) MAUCHLY (iv) Mechanical
& ECKERT calculator
Ans : a - iii, b - iv, c - i , d - ii
100. The binary number 1101100.110 in octal form will be
(a) 152.6
(b) 154.6 (Ans)
(c) 145.6
(d) 174.6
