Computer Organization & Logic Design (Final Bank - 100 Questions)
Department of Cyber Security - Al-Mustaqbal University
Prepared by Student: Hussein Abdullah Rahman
Specialization: Cyber Security (First Stage)
University: Al-Mustaqbal University
Subject: Computer Organization & Logic Design
Specialization: Cyber Security (First Stage)
University: Al-Mustaqbal University
Subject: Computer Organization & Logic Design
Q1. What does hardware refer to?
A) Programs that run on a computer
B) Physical components of a computer
C) Data stored on a computer
D) Internet connectivity
E) User manuals
Q2. What is the base of the binary number system?
A) 8
B) 10
C) 2
D) 16
E) 5
Q3. What is the binary equivalent of decimal ( 4 )?
A) 100
B) 101
C) 110
D) 11
E) 010
Q4. What is De Morgan's Theorem applied to (A+B)?
A) A . B
B) A + B
C) -A.-B
D) -A + -B
E) A ⊕ B
Q5. What does SOP stand for in Boolean algebra?
A) Sum of Products
B) System of Procedures
C) Solution of Problems
D) Sum of Powers
E) System of Programming
Q6. Software refers to:
A) Physical parts of a computer
B) Programs that control the computer
C) Data stored in RAM
D) Internet cables
E) Electrical circuits
Q7. What is the hexadecimal representation of binary 1111?
A) A
B) B
C) E
D) F
E) 10
Q8. Convert hexadecimal 16 to binary:
A) 00010110
B) 10101010
C) 11110000
D) 00110011
E) 01010101
Q9. What is the result of ( A . -A )?
A) A
B) -A
C) 0
D) 1
E) A+B
Q10. Which is an example of POS?
A) (A'+B)(A+C')
B) AB' + BC
C) A'B'C
D) A + B' + C
E) A.B.C
Q11. What is the main feature of a laptop?
A) High cost
B) Portability
C) Large size
D) No battery
E) Only works when plugged in
Q12. The octal equivalent of binary 1010 is:
A) 10
B) 12
C) 15
D) 17
E) 20
Q13. Which logic gate outputs "0" ONLY when all its inputs are "0"?
A) AND
B) OR
C) NOT
D) NOR
E) XNOR
Q14. What is the octal equivalent of binary 110110?
A) 66
B) 55
C) 33
D) 44
E) 77
Q15. To implement Y = A'B + AB', we need:
A) 2 AND, 1 OR
B) 1 AND, 1 OR
C) 2 OR, 1 AND
D) Only NAND gates
E) Only NOR gates
Q16. Which operating system was designed for personal computers?
A) iOS
B) Android
C) Windows
D) Symbian
E) BlackBerry OS
Q17. What is the result of binary addition: 101 + 011?
A) 1000
B) 1010
C) 1100
D) 1110
E) 1111
Q18. What is the symbolic representation of a NOT gate?
A) +
B) .
C) ⊕
D) ~
E) ⊙
Q19. Convert hexadecimal 0E to decimal:
A) 14
B) 15
C) 16
D) 13
E) 12
Q20. The Boolean expression A'BC + AB'C' + ABC is in:
A) SOP form
B) POS form
C) Neither
D) Both
E) Canonical form only
Q21. What is the binary representation of decimal 25?
A) 11001
B) 10101
C) 10011
D) 11100
E) 11011
Q22. Which of the following is NOT hardware?
A) Keyboard
B) Mouse
C) Microsoft Excel
D) Monitor
E) Printer
Q23. The decimal equivalent of octal 15 is:
A) 10
B) 13
C) 15
D) 17
E) 21
Q24. What gate results from connecting a NAND's output to a NOT gate's input?
A) AND
B) OR
C) XOR
D) XNOR
E) NOR
Q25. What does (A + B)(A' + B) simplify to?
A) B
B) A
C) A+B
D) AB
E) B'
Q26. The expression (X+Y'+Z)(X'+Y+Z') is in:
A) POS form
B) SOP form
C) Neither
D) Both
E) Canonical form only
Q27. A program is a set of:
A) Hardware components
B) Electrical circuits
C) Instructions for the computer
D) Internet cables
E) User manuals
Q28. Convert hexadecimal (A) to decimal:
A) 10
B) 11
C) 12
D) 15
E) 16
Q29. What is the output of an XNOR gate when inputs are A=1 and B=1?
A) 0
B) 1
C) A
D) B
E) Unknown
Q30. What is the result of A + A'?
A) 0
B) 1
C) A
D) A'
E) Depends on A
Q31. Which of the following is NOT a valid binary number?
A) 1010
B) 1112
C) 1101
D) 1000
E) 0011
Q32. What is the main advantage of a mainframe computer?
A) Low cost
B) Portability
C) High processing power and storage
D) Small size
E) Used only for gaming
Q33. What is binary 10101010 in hexadecimal?
A) AA
B) AB
C) AC
D) AD
E) AF
Q34. What is the result of the binary subtraction: 1101 - 1010?
A) 0010
B) 0001
C) 0111
D) 0011
E) 0101
Q35. What is the output of (A + B') when A=0 and B=1?
A) 0
B) 1
C) Depends on design
D) 2
E) -1
Q36. What is the Boolean expression for XOR gate?
A) A.B
B) A+B
C) A ⊕ B
D) A ⊙ B
E) ~(A+B)
Q37. Which computer is also called a "notebook"?
A) Mainframe
B) Supercomputer
C) Personal computer
D) Laptop
E) Network computer
Q38. What is the binary result of 1111 AND 1010?
A) 1010
B) 1111
C) 0000
D) 1101
E) 1000
Q39. The BCD equivalent of decimal 5 is:
A) 0101
B) 0110
C) 1000
D) 0011
E) 1010
Q40. Which binary operation follows this rule: 1 + 1 = 10?
A) Subtraction
B) Multiplication
C) Division
D) Addition
E) Complement
Q41. Binary 101111 equals octal:
A) 57
B) 45
C) 67
D) 73
E) 61
Q42. Which logic gate outputs "1" ONLY when all its inputs are "1"?
A) AND
B) OR
C) NOT
D) NAND
E) XOR
Q43. What does (A + B)(A + B') simplify to?
A) A
B) B
C) A+B
D) A.B
E) A'+B'
Q44. Which type of computer is considered very large and powerful in the given options?
A) Personal computer
B) Laptop
C) Mainframe
D) Smartphone
E) Tablet
Q45. What is the output of an XNOR gate when A=1 and B=0?
A) 0
B) 1
C) A
D) B
E) ~A
Q46. What is the output of a 3-input OR gate when the inputs are (0, 0, 1)?
A) 0
B) 1
C) Depends on design
D) 2
E) -1
Q47. Which of the following is NOT a binary arithmetic operation?
A) Addition
B) Subtraction
C) Encryption
D) Multiplication
E) Division
Q48. How is decimal 200 represented in binary?
A) 11000100
B) 11001000
C) 10101010
D) 11110000
E) 10000000
Q49. Which of the following is an example of hardware?
A) Microsoft Word
B) Windows OS
C) CPU
D) Google Chrome
E) PDF file
Q50. What is the Boolean expression for NOR gate?
A) A.B
B) -(A.B)
C) A+B
D) -(A+B)
E) A⊕B
Q51. What does SOP stand for?
A) Sum of product
B) Product of Sum
C) Sum of power
D) Product of Product
E) Power of Sums
Q52. In SOP, variables are first:
A) Added then multiplied
B) Multiplied then added
C) Divided then added
D) Subtracted then multiplied
E) Negated then added
Q53. Which gate combination is used to implement SOP?
A) OR - NOT
B) AND - OR
C) XOR - AND
D) NAND - NOR
E) NOR - AND
Q54. The expression a + b.c + a'b is an example of:
A) POS
B) SOP
C) XOR
D) NOT
E) Canonical POS
Q55. The domain of a Boolean expression means:
A) Number of outputs
B) Set of variables used
C) Number of gates
D) Number of inputs only
E) Output voltages
Q56. Which Boolean rule is used in Standard SOP conversion?
A) A.A' = 0
B) A+0 = A
C) A+A' = 1
D) A.1 = A
E) A+A = A
Q57. In Canonical SOP, all ___ must appear in each term.
A) Gates
B) Variables of the domain
C) Outputs
D) Constants
E) Don't cares
Q58. Minterm is also called:
A) Sum term
B) Product term
C) Logic term
D) Output term
E) Input term
Q59. SOP Expressions are related to output value:
A) 0
B) 1
C) 2
D) X
E) Z
Q60. In SOP truth table conversion, only rows with output ___ are selected.
A) 0
B) 1
C) X
D) Z
E) High impedance
Q61. In SOP conversion, binary value 0 represents:
A) Complement variable
B) Variable
C) Constant
D) Output
E) Carrier
Q62. POS stands for:
A) Product of Sums
B) Power of Sum
C) Product of Signals
D) Power of Signals
E) Product of Subtraction
Q63. In POS, variables are first:
A) Multiplied then added
B) Added then multiplied
C) Divided then added
D) Negated then added
E) Subtracted then added
Q64. Which gate combination is used to implement POS?
A) AND - OR
B) OR - AND
C) XOR - NOT
D) NAND - XOR
E) NOR - OR
Q65. Which Boolean rule is used in Standard POS conversion?
A) A+A' = 1
B) A.A' = 0
C) A+0 = A
D) A.1 = A
E) A+A = A
Q66. POS expressions are related to output value:
A) 1
B) 0
C) 2
D) X
E) Z
Q67. In POS truth table conversion, only rows with output ___ are selected.
A) 1
B) 0
C) X
D) Z
E) High impedance
Q68. Maxterm is also called:
A) Product term
B) Sum term
C) Output term
D) Logic term
E) Input term
Q69. In POS, binary value 1 represents:
A) Variable
B) Complement of variable
C) Constant
D) Output
E) Don't care
Q70. Final Step in SOP method is:
A) Multiplication of terms
B) Addition of terms
C) Division of terms
D) Negation of terms
E) Subtraction of terms
Q71. Final step in POS method is:
A) Addition of terms
B) Multiplication of terms
C) Negation of terms
D) XOR operation
E) Subtraction of terms
Q72. Which of the following is a POS expression?
A) a'bc + ab
B) (a+b)(b+c)
C) ab+c
D) a+b+c
E) a.b.c
Q73. Which of the following is a SOP expression?
A) (a+b)(a+c)
B) ab+a'c
C) (a+b+c)
D) (a+b')(c+d)
E) (a)(b)
Q74. Minterms are associated with:
A) Low output
B) High output
C) No output
D) Undefined output
E) Z output
Q75. What does BCD stand for?
A) Binary code Decimal
B) Binary coded Decimal
C) Bit coded Decimal
D) Binary converted Data
E) Base Coded Data
Q76. In BCD, each decimal digit is represented by:
A) 2 bits
B) 3 bits
C) 4 bits
D) 8 bits
E) 16 bits
Q77. Which BCD code is illegal?
A) 0101
B) 1001
C) 1011
D) 0011
E) 1000
Q78. The BCD equivalent of decimal 5 is:
A) 0101
B) 0110
C) 1000
D) 0011
E) 1111
Q79. Excess-3 code is obtained by adding:
A) 1
B) 2
C) 3
D) 4
E) 5
Q80. Excess-3 is classified as:
A) Weighted code
B) Non-weighted code
C) Binary fraction
D) Octal code
E) Alphanumeric code
Q81. Excess-3 code for decimal 2 is:
A) 0010
B) 0101
C) 0110
D) 1001
E) 0011
Q82. Which codes are not used in Excess-3?
A) 0011 and 0100
B) 0000 and 1111
C) 1010 and 1011
D) 1100 and 1110
E) 0101 and 1000
Q83. Gray code changes how many bits between consecutive numbers?
A) 4 bits
B) 3 bits
C) 2 bits
D) 1 bit
E) 8 bits
Q84. Gray code is mainly used to reduce:
A) Memory size
B) Arithmetic operations
C) Data errors
D) Voltage
E) Execution time
Q85. In Binary to Gray conversion, the MSB remains:
A) Complemented
B) Changed
C) Same
D) Zero
E) One
Q86. The XOR operation is used in:
A) Decimal to BCD
B) Binary to Gray conversion
C) Addition only
D) Multiplication
E) Division
Q87. Half Adder has:
A) One input
B) Two inputs
C) Three inputs
D) Four inputs
E) Five inputs
Q88. Outputs of Half Adder are:
A) Sum and carry
B) Input and output
C) Borrow and Difference
D) XOR and AND
E) NAND and NOR
Q89. Full Adder contains an extra input called:
A) Borrow
B) Enable
C) carry in (cin)
D) overflow
E) Selector
Q90. Decoder converts:
A) Many inputs to few outputs
B) Binary data to active output line
C) Decimal to BCD
D) Analog to digital
E) Hex to octal
Q91. Encoder converts:
A) Inputs into binary code
B) Binary into decimal
C) Gray in to binary
D) Decimal into octal
E) Hex to binary
Q92. A Multiplexer selects:
A) One output from many inputs
B) One input from many outputs
C) Two outputs together
D) Carry output only
E) Clock signals
Q93. Demultiplexer sends:
A) Many inputs to one output
B) One input to many outputs
C) Binary to Gray
D) Decimal to BCD
E) Analog to digital
Q94. Comparator is used to:
A) Store data
B) Add numbers
C) Compare two binary numbers
D) Convert Gray code
E) Shift bits
Q95. In comparators, when A=1 and B=0 then:
A) A < B
B) A = B
C) A > B
D) No output
E) A ≤ B
Q96. The Half Subtractor outputs are:
A) Sum and carry
B) Difference and Borrow
C) Input and output
D) XOR and OR
E) NAND and NOT
Q97. Full Adder has how many inputs?
A) 1
B) 2
C) 3
D) 4
E) 5
Q98. Gray code is a type of:
A) Decimal code
B) Binary code
C) Hexadecimal code
D) ASCII code
E) BCD code
Q99. The BCD of decimal 9 is:
A) 1001
B) 1010
C) 1111
D) 0111
E) 0000
Q100. The BCD equivalent of decimal 15 is:
A) 1111
B) 0001 0101
C) 1010
D) 0111
E) 1000 0101
ليست هناك تعليقات:
إرسال تعليق