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CSS - PMS - CCE - PCS - Basic Computing Practice

Computer Fundamentals MCQs

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Computer Fundamentals

Computer Fundamentals MCQs With Answers

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CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
For a two-input AND gate, what is the output when A=1 and B=1?
A. 1
B. Undefined
C. Depends on clock speed
D. 0
Read Theory
Correct Answer: A
Applying the AND truth table to A=1, B=1 gives 1.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
For a two-input AND gate, what is the output when A=1 and B=0?
A. 1
B. Undefined
C. Depends on clock speed
D. 0
Read Theory
Correct Answer: D
Applying the AND truth table to A=1, B=0 gives 0.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
For a two-input AND gate, what is the output when A=0 and B=1?
A. 0
B. 1
C. Undefined
D. Depends on clock speed
Read Theory
Correct Answer: A
Applying the AND truth table to A=0, B=1 gives 0.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
For a two-input AND gate, what is the output when A=0 and B=0?
A. 1
B. Undefined
C. Depends on clock speed
D. 0
Read Theory
Correct Answer: D
Applying the AND truth table to A=0, B=0 gives 0.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate outputs 1 when its two inputs are the same?
A. OR
B. NOR
C. XOR
D. XNOR
Read Theory
Correct Answer: D
The XNOR gate outputs 1 when its two inputs are the same.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate outputs 1 when its two inputs are different?
A. OR
B. XNOR
C. NAND
D. XOR
Read Theory
Correct Answer: D
The XOR gate outputs 1 when its two inputs are different.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate is the complement of the OR operation?
A. OR
B. NOR
C. XNOR
D. NAND
Read Theory
Correct Answer: B
The NOR gate is the complement of the OR operation.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate is the complement of the AND operation?
A. OR
B. NAND
C. XNOR
D. XOR
Read Theory
Correct Answer: B
The NAND gate is the complement of the AND operation.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate inverts a single binary input?
A. OR
B. NOT
C. XNOR
D. AND
Read Theory
Correct Answer: B
The NOT gate inverts a single binary input.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate outputs 1 when at least one input is 1?
A. NAND
B. NOT
C. OR
D. XNOR
Read Theory
Correct Answer: C
The OR gate outputs 1 when at least one input is 1.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
Which logic gate outputs 1 only when all its inputs are 1?
A. XOR
B. AND
C. OR
D. XNOR
Read Theory
Correct Answer: B
The AND gate outputs 1 only when all its inputs are 1.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is hexadecimal A0 in decimal?
A. 161
B. 159
C. 176
D. 160
Read Theory
Correct Answer: D
Hexadecimal A0 equals decimal 160.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is hexadecimal 7F in decimal?
A. 128
B. 127
C. 126
D. 143
Read Theory
Correct Answer: B
Hexadecimal 7F equals decimal 127.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is hexadecimal 4B in decimal?
A. 91
B. 74
C. 75
D. 76
Read Theory
Correct Answer: C
Hexadecimal 4B equals decimal 75.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is hexadecimal 3C in decimal?
A. 60
B. 61
C. 59
D. 76
Read Theory
Correct Answer: A
Hexadecimal 3C equals decimal 60.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is hexadecimal 2F in decimal?
A. 47
B. 63
C. 46
D. 48
Read Theory
Correct Answer: A
Hexadecimal 2F equals decimal 47.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is hexadecimal 1A in decimal?
A. 26
B. 42
C. 25
D. 27
Read Theory
Correct Answer: A
Hexadecimal 1A equals decimal 26.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is decimal 255 in hexadecimal notation?
A. 100
B. 10F
C. FF
D. FE
Read Theory
Correct Answer: C
Decimal 255 is FF in hexadecimal.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is decimal 100 in hexadecimal notation?
A. 64
B. 65
C. 63
D. 74
Read Theory
Correct Answer: A
Decimal 100 is 64 in hexadecimal.
CSS - PMS - CCE - PCS - Basic Computing Computer Fundamentals
What is decimal 64 in hexadecimal notation?
A. 3F
B. 40
C. 41
D. 50
Read Theory
Correct Answer: B
Decimal 64 is 40 in hexadecimal.
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