XOR and XNOR gates MCQ

By: Prof. Dr. Fazal Rehman | Last updated: June 20, 2025

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





2. : What is the output of an XOR gate if one input is HIGH (1) and the other is LOW (0)?





3. : What is the output of an XNOR gate if both inputs are LOW (0)?





4. : What is the output of an XNOR gate if one input is HIGH (1) and the other is LOW (0)?





5. : Which gate produces a HIGH (1) output when the inputs are different?





6. : Which gate produces a LOW (0) output when the inputs are different?





7. : What is the symbol for the XOR gate?





8. : What is the symbol for the XNOR gate?





9. : Which gate is known as the exclusive OR gate?





10. : Which gate is known as the exclusive NOR gate?





11. : What is the output of an XOR gate if both inputs are HIGH (1)?





12. : What is the output of an XNOR gate if both inputs are HIGH (1)?





13. : Which gate has a truth table that is the inverse of the XOR gate?





14. : Which gate has a truth table where the output is LOW (0) only when the inputs are the same?





15. : What is the output of an XOR gate if one input is LOW (0) and the other is HIGH (1)?





16. : What is the output of an XNOR gate if both inputs are LOW (0)?





17. : What is the output of an XOR gate if one input is HIGH (1) and the other is LOW (0)?





18. : What is the output of an XNOR gate if both inputs are HIGH (1)?





19. : Which gate is used in arithmetic circuits for addition and subtraction?





20. : Which gate is used in digital systems for implementing parity checkers?





 

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
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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)

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