Introduction to Computing Sci. I — 2022 Past Questions

University of Ilorin COS101: 93 questions.

Topics: Boolean Algebra, Fundamentals of Truth tables and Precedence, Basic Components of Computer, Basic Computing Concepts, Diverse And Growing Computers and Digital Applications

1. In what way is the computer not better than human being?
   1. Ability to recall information stored in a split second
   2. Ability to store massive amounts of information
   3. Ability to solve complex math problems in a second
   4. Ability to reason
2. A computer does which of the following?
   1. Manipulates data
   2. Concatenate data
   3. Synchronize data
   4. Invents data
3. One of the earliest computing devices invented by humans was the ..............
   1. Abacus
   2. Napier Bones
   3. Mini Computer
   4. Super computer
4. .............. invented the arithmometer
   1. Thomas Xavier
   2. Thomas Wendy
   3. Charles Xavier Thomas de Colmar
   4. Wendy Xavier
5. The first generation of computers was based on ............ technology
   1. Vacuum tubes
   2. Transistors
   3. Integrated circuits
   4. Multiplexers
6. The ................was the first commercial computer to be built.
   1. ENIAC
   2. UNIVAC
   3. EDSAC
   4. EDVAC
7. The first generation of computers had the disadvantage of ................
   1. Heat
   2. Polarization
   3. Rolling
   4. Wheeling
8. The personal computer was first introduced by ......
   1. IBM
   2. Microsoft
   3. Apple
   4. TECNO
9. The ................... was the first system to use a graphical user interface
   1. Macintosh
   2. Windows
   3. VM Ware
   4. Virtual Machine
10. UNIVAC stands for ........
    1. Universal Automatic Calculator
    2. Universal Integrator Automatic Calculator
    3. United Automatic Calculator
    4. United Integrator Automatic Calculator
11. ENIAC stands for ........
    1. Electronic Numerical Integrated Automatic Calculator
    2. Engineering Numerical Integrator Automatic Calculator
    3. Electronic Numerical Integrator Automatic Calculator
    4. Engineering Numerical Integrated Automatic Calculator
12. EDVAC stands for ...........
    1. Electronic Discrete Variable Automatic Calculator
    2. Electronic Distributed Variable Automatic Calculator
    3. Electrical Discrete Variable Automatic Calculator
    4. Electrical Distributed Variable Automatic Calculator
13. Artificial Intelligence is a property of which generation of computer?
    1. Fifth
    2. Fourth
    3. Third
    4. Sixth
14. Which of the following is not part of the basic operations of a computer system?
    1. Inputting
    2. Processing
    3. Controlling
    4. Correcting
15. The Input unit of a computer system performs the following functions except .........
    1. Reads/accept instructions and data from the outside environment
    2. Converts data into computer acceptable form
    3. Supplies data to the computer system for processing
    4. Instructs the computer system on how the accepted data is to be processed
16. The output unit of a computer system performs the following functions except ............
    1. Accepts the result produced by the computer system
    2. Converts acceptable results to human readable form
    3. Supplies the converted results to outside world
    4. Determines how the data should be processed
17. The storage unit of a computer system holds the following except?
    1. Data and instructions required for processing
    2. Intermediate results for processing
    3. Final results of processing before they are released to an output device
    4. Decides which data should be outputed
18. Which of the following is not a characteristic of a primary storage?
    1. Expensive
    2. Volatile
    3. Large Capacity
    4. Fast Operation
19. Which of the following is not a characteristic of a secondary storage?
    1. Large Capacity
    2. Cheaper than primary storage
    3. Slower than primary storage
    4. Volatile
20. By analysis, modern digital computer system can be divided into ................ distinct parts
    1. 5
    2. 4
    3. 3
    4. 6
21. ................. links and connects the elements of a CPU system.
    1. Bus
    2. Cables
    3. Circuits
    4. Magnets
22. Which of the following is not a function of microprocessor?
    1. Control sequence of operations
    2. Control the usage of main memory in storing data and information
    3. Give commands to all parts of the computer system
    4. Decides which data should be inputed for processing
23. The computer system is made up of the following components except ...........
    1. Software
    2. Hardware
    3. Firmware
    4. Humanware
24. The component of the computer system which is used for arithmetic and logic operations is known as .............
    1. CPU
    2. ALU
    3. RAM
    4. ROM
25. ................... is used for supplying data and instructions to the computer
    1. Output device
    2. Input device
    3. Auxiliary Storage
    4. Peripherals
26. A set of instructions required to accomplish a task is known as ..............
    1. Program
    2. Sequence
    3. Algorithm
    4. Manual
27. The Operating system is known for .......
    1. Distributing electric charge in the computer
    2. Manage resources of the computer system
    3. Accomplish a task
    4. Work with only input devices
28. The following are language translators except.........
    1. Assembler
    2. Interpreter
    3. Compiler
    4. Demodulator
29. A translator that takes a program in one High Level Language and produces the equivalent program in another High-Level Language is known as ..........
    1. Compiler
    2. Interpreter
    3. Assembler
    4. Pre-processor
30. The next instruction to be executed by the processor is determined by ..............
    1. ALU
    2. Control unit
    3. Memory Unit
    4. CPU
31. Flash drive is a typical example of ...............
    1. Secondary Memory
    2. Primary memory
    3. Internal Memory
    4. Back up storage
32. Antivirus is an example of ................
    1. Application software
    2. Utility software
    3. System drivers
    4. Operating system
33. The following are types of system software except ..........
    1. Utility software
    2. Text editors
    3. Operating system
    4. Word processor
34. A program that places an executable file into memory and prepares them for execution is ..............
    1. Linker
    2. Patcher
    3. Loader
    4. Launcher
35. The following are types of Operating system except............
    1. Windows
    2. MAC
    3. UNIX
    4. BASIC
36. The set of people that work with the computer system is referred to as
    1. Humanware
    2. ManWare
    3. Users
    4. Operators
37. The following hardware components are peripheral devices except......
    1. Random Access Memory
    2. Read Only Memory
    3. Flash drive
    4. Mouse
38. Which of the following is not a function of an operating system?
    1. Controlling and allocating computer resources
    2. Handling system request
    3. Controlling the usage of input and output devices
    4. Getting rid of virus
39. Which of this is not a service provided by an operating system?
    1. Error detection
    2. Program creation
    3. Program execution
    4. Evaluation
40. Which is not a type of operating system?
    1. Real Time Operating System
    2. Single User Operating System
    3. Multi Time Operating system
    4. Time Sharing System
41. Which is a volatile memory type?
    1. RAM
    2. ROM
    3. Flash Drive
    4. Hard Disk
42. What component of the computer is correctly associated with the function it performs?
    1. Output : Monitor
    2. Microprocessor : Storage
    3. RAM : Processing
    4. Optical drive : Sound
43. Which system bus is used by the CPU to direct and monitor the actions of the other functional areas of the computer?
    1. Address Bus
    2. Control Bus
    3. Data Bus
    4. Code Bus
44. Which system bus consists of all the signals necessary to define any of the possible memory address locations within the computer?
    1. Address Bus
    2. Control Bus
    3. Data Bus
    4. Code Bus
45. Which system bus carries operands to and from the CPU and memory as required by instruction translation?
    1. Data Bus
    2. Address Bus
    3. Code Bus
    4. Control Bus
46. A computer’s CPU is built from ------------- circuits
    1. Combinatorial
    2. Colloquial
    3. Conditional
    4. Complemented
47. The smallest quantity of information that can be stored in a computer is
    1. kit
    2. kyte
    3. byte
    4. bit
48. The basic unit of information operated on by a computer is a
    1. word
    2. byte
    3. character
    4. bit
49. The acronym 'Bit' stands for
    1. Balanced digit
    2. Binary digit
    3. Base digit
    4. Boolean digit
50. Which of the following is not part of the basic logic gates?
    1. NOT
    2. AND
    3. OR
    4. XOR
51. How many truth table entries are necessary for a four-input circuit?
    1. 4
    2. 8
    3. 16
    4. 32
52. Which of the gate will have its output to be zero for any case when one or more of its input are zero?
    1. AND
    2. OR
    3. NAND
    4. XOR
53. What input values will cause an AND logic gate to produce a TRUE output?
    1. All inputs are true
    2. All inputs are false
    3. At least one input is true
    4. At least one input is false
54. What input value(s) will cause a NAND logic gate to produce a TRUE output?
    1. All inputs are true
    2. All inputs are false
    3. At most one input is true
    4. At most one input is false
55. XOR logic gate can be constructed from which other logic gates?
    1. AND and NOT gates
    2. AND, OR and NOT gates
    3. OR and NOT gates
    4. XOR, NOT and AND gates
56. Which of the following is FALSE about truth table?
    1. It is a means of representing the results of a logic function
    2. It contains all possible combinations of input values
    3. It shows the various operators and the result of their operations involving variables
    4. It only considers the true values alone
57. What input value(s) will cause a XOR logic gate to produce a TRUE output?
    1. Only one input is false
    2. At least one input is false
    3. At least one input is true
    4. At most one input is true
58. The logic operator with the highest precedence is
    1. NOT
    2. AND
    3. OR
    4. XOR
59. Considering only the basic logic operators, which operator has the lowest precedence?
    1. NOT
    2. AND
    3. OR
    4. XOR
60. The following are types of logic gate EXCEPT
    1. AND
    2. XOR
    3. XNOT
    4. OR
61. The combination of AND and NOT logic operators gives
    1. NAND
    2. NOR
    3. NNOT
    4. XNOR
62. The XNOR gate is a combination of
    1. AND and NOT
    2. NOR and X
    3. XOR and NOT
    4. NOT and OR
63. The following are binary logical operators EXCEPT
    1. AND
    2. OR
    3. NOT
    4. XOR
64. The means of representing the results of a logic function using a table is known as
    1. Logic table
    2. Symbol table
    3. Truth table
    4. Boolean table
65. The statement 'output is true when both inputs are true. Otherwise, the output is false' represents which logic gate?
    1. OR
    2. AND
    3. NOR
    4. NAND
66. The number of input combinations in a Boolean function of n variables is
    1. 2²ⁿ
    2. 3ⁿ
    3. 4ⁿ
    4. 2ⁿ
67. A Boolean function involving six variables will have how many input combinations?
    1. 32
    2. 46
    3. 64
    4. 63
68. Solve the Boolean Expression: xy + (x+y).x where x=1 and y=1
    1. 0
    2. 1
    3. 3
    4. 5
69. Given R=0, P=1, S=1, T=0, solve the Boolean function: (RP)(ST)(S+R)(P+T)
    1. 0
    2. 1
    3. 11
    4. 10
70. What is the output of the boolean algebra A + 0 = ?
    1. A
    2. 1
    3. 0
    4. A0
71. What is the output of the boolean algebra B + 1 = ?
    1. B
    2. 1
    3. 0
    4. B1
72. What is the output of the boolean algebra A + A.B = ?
    1. A
    2. B
    3. AB
    4. A + B
73. In Boolean algebra, A + (B.C) is equivalent to
    1. (A.B) + (A.C)
    2. (A+B).(A+C)
    3. (A.B) + (A+C)
    4. (A.B).(A+C)
74. Simplify (A + B' + C').(A + B'.C)
    1. A + B'.C
    2. A.B' + C
    3. A + B.C
    4. A.B + C
75. Simplify A.B + A(B + C) + B(B + C)
    1. B + A.C
    2. B + A
    3. A + C
    4. C + A.B
76. Boolean algebra can be used in building--------circuits
    1. Electronic
    2. Mechanical
    3. Open
    4. Closed
77. A computer’s CPU is built from ------------- circuits
    1. Combinatorial
    2. Complex
    3. Collected
    4. Compound
78. In Karnaugh map, the total number of cells/boxes in a table is equal to
    1. Total number of input variables
    2. Total number of input combinations
    3. Total number of variables with truth values
    4. Total number of variables with false values
79. Which of the following is false about grouping in K-map?
    1. Grouping can only be done side to side or top to bottom
    2. The top row may wrap around to the bottom row to form a group
    3. Using the same one (1) in more than one group is not permissible
    4. Grouping is done in powers of 2
80. Simplify: C + (B.C)'
    1. C + B'
    2. 1
    3. C.B'
    4. C'.B
81. Simplify: (A + C).(A.D + A.D') + A.C + C
    1. A' + C
    2. A + C'
    3. A + C
    4. A' + C'
82. Simplify: (A.B)'.(A' + B).(B' + B)
    1. A' + B
    2. A'
    3. A
    4. A' + B'
83. Simplify: A'.(A + B) + (B + A.A).(A + B')
    1. A' + B'
    2. A + B
    3. A + B'
    4. A' + B
84. In Boolean algebra, (A + B).(A + C) is equivalent to
    1. C + A.B
    2. B + B.C
    3. A + B.C
    4. B + A.C
85. In Boolean algebra, (A + C).B is equivalent to
    1. A.C
    2. A.C + A.B
    3. A.B + B.C
    4. C.B + C.A
86. In Boolean algebra, A.1 is equivalent to
    1. A
    2. A'
    3. 1
    4. 0
87. By De Morgan's theorem, (A + B)' is equivalent to
    1. A' + B'
    2. A'.B'
    3. A'.(A'+B')
    4. AA' + AB' + BB'
88. Simplify the expression using Karnaugh map: A'BC + A'BC' + ABC' + ABC + AB'C'
    1. B + AC'
    2. B + AB'
    3. A' + BC'
    4. A + BC'
89. Simplify the expression A.B'.C + A.B'.C'
    1. A.B'
    2. A.C'
    3. B.C'
    4. B.C
90. Simplify the expression using Karnaugh map: A'B'C' + A'BC' + AB'C' + ABC'
    1. A + BC'
    2. C'
    3. A' + BC'
    4. BC'
91. The first computer program was written by
    1. Grace Hopper
    2. Ada Lovelace
    3. Charles Babbage
    4. Von Neumann
92. The first computer program was written in
    1. 1840
    2. 1841
    3. 1842
    4. 1843
93. The world's first non-Von Neumann programmable computer was
    1. Analytical Engine
    2. Difference Engine
    3. Plan Kalkül
    4. Windows

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