XOR and XNOR gates MCQ

By: Prof. Dr. Fazal Rehman | Last updated: June 8, 2024

What is the output of an XOR gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
What is the output of an XOR gate if one input is HIGH (1) and the other is LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of an XNOR gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of an XNOR gate if one input is HIGH (1) and the other is LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which gate produces a HIGH (1) output when the inputs are different?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: A
Which gate produces a LOW (0) output when the inputs are different?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: B
What is the symbol for the XOR gate?

A) ∧
B) ∨
C) ⊕
D) ⊗
Answer: C
What is the symbol for the XNOR gate?

A) ∧
B) ∨
C) ⊕
D) ⊗
Answer: D
Which gate is known as the exclusive OR gate?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: A
Which gate is known as the exclusive NOR gate?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: B
What is the output of an XOR gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
What is the output of an XNOR gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
Which gate has a truth table that is the inverse of the XOR gate?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: B
Which gate has a truth table where the output is LOW (0) only when the inputs are the same?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: B
What is the output of an XOR gate if one input is LOW (0) and the other is HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of an XNOR gate if both inputs are LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of an XOR gate if one input is HIGH (1) and the other is LOW (0)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: A
What is the output of an XNOR gate if both inputs are HIGH (1)?

A) HIGH (1)
B) LOW (0)
C) Unknown
D) Depends on gate configuration
Answer: B
Which gate is used in arithmetic circuits for addition and subtraction?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: A
Which gate is used in digital systems for implementing parity checkers?

A) XOR gate
B) XNOR gate
C) OR gate
D) AND gate
Answer: B

MCQs of Digital Logic Design (DLD)

Introduction to Digital Systems

1. Analog vs. Digital signals MCQs
2. Binary numbers and arithmetic MCQs
3. Logic levels and noise margins MCQs

Boolean Algebra

1. Basic logic operations (AND, OR, NOT) MCQ
2. Laws and theorems of Boolean algebra MCQ
3. De Morgan’s Theorems MCQ
4. Canonical forms (Sum of Products, Product of Sums) MCQ
5. Simplification techniques (Karnaugh Maps, Quine-McCluskey method) MCQ

Combinational Logic

Logic Gates

1. Basic gates (AND, OR, NOT) Gat MCQ
2. Universal gates (NAND, NOR) Gat MCQs
3. XOR and XNOR gates MCQ

Combinational Circuits

1. Design and analysis of combinational circuits MCQ
2. Multiplexers and Demultiplexers MCQ
3. Encoders and Decoders MCQ
4. Binary Adders (Half adder, Full adder) MCQ
5. Subtractors and Arithmetic Logic Units (ALU) MCQ
6. Comparators MCQ in DLD

Sequential Logic

Flip-Flops and Latches

1. SR Latch, D Latch MCQ
2. Flip-Flops (SR, D, JK, T) MCQ
3. Characteristic equations and excitation tables MCQ
4. Edge-triggered vs. level-triggered devices MCQ

Counters and Registers

1. Synchronous, Asynchronous (ripple), Up/Down counters MCQs
2. Shift registers (SIPO, PISO, SISO, PIPO) MCQs

State Machines

Finite State Machines (FSMs)

1. Moore and Mealy machines MCQs

Memory and Programmable Logic MCQs

Memory Devices

1. Read-Only Memory (ROM)
2. Random Access Memory (RAM)
3. Programmable Logic Devices (PLDs) MCQs
4. Field Programmable Gate Arrays (FPGAs) MCQs

More MCQs of Digital Logic Design (DLD)

• • SET 1: DLD MCQs with answers (dld mcqs with answers)
  • SET 2: DLD MCQs (dld basic mcqs)
  • SET 3: DLD MCQs (solved mcqs of dld)
  • SET 4: DLD MCQs (dld repeated mcqs)
  • SET 5: DLD MCQs (dld important mcqs)
  • SET 6:DLD MCQs DLD Solved MCQs Answers PDF

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