Analog vs. Digital signals MCQs

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

Which of the following is a characteristic of an analog signal?

A) Discrete values
B) Continuous values
C) Binary values
D) Quantized values
Answer: B) Continuous values
What is a primary advantage of digital signals over analog signals?

A) More noise-sensitive
B) Infinite resolution
C) Easier to process and store
D) Requires less bandwidth
Answer: C) Easier to process and store
In which type of signal is information represented using discrete steps?

A) Analog
B) Digital
C) Both A and B
D) None of the above
Answer: B) Digital
Which of the following is NOT an example of an analog device?

A) Thermometer
B) Oscilloscope
C) Digital clock
D) Microphone
Answer: C) Digital clock
In digital systems, what are the two states called?

A) High and Low
B) On and Off
C) 1 and 0
D) All of the above
Answer: D) All of the above
Which type of signal is more susceptible to noise?

A) Analog
B) Digital
C) Both A and B
D) Neither A nor B
Answer: A) Analog
The process of converting an analog signal to a digital signal is called:

A) Modulation
B) Demodulation
C) Digitization
D) Quantization
Answer: C) Digitization
Sampling is a crucial part of which process?

A) Analog-to-digital conversion
B) Digital-to-analog conversion
C) Modulation
D) Demodulation
Answer: A) Analog-to-digital conversion
Which term describes the number of samples taken per second in a digital signal?

A) Frequency
B) Amplitude
C) Sampling rate
D) Bandwidth
Answer: C) Sampling rate
What is the main disadvantage of digital signals compared to analog signals?

A) More noise-sensitive
B) Requires more bandwidth
C) Infinite resolution
D) Harder to store and process
Answer: B) Requires more bandwidth
Quantization error occurs in which type of signal conversion?

A) Analog-to-digital conversion
B) Digital-to-analog conversion
C) Modulation
D) Demodulation
Answer: A) Analog-to-digital conversion
Which device is used to convert analog signals to digital signals?

A) ADC (Analog-to-Digital Converter)
B) DAC (Digital-to-Analog Converter)
C) Modem
D) Multiplexer
Answer: A) ADC (Analog-to-Digital Converter)
In digital communications, what is the process of encoding information into a signal?

A) Modulation
B) Demodulation
C) Sampling
D) Quantization
Answer: A) Modulation
Which of the following signals is described by a sine wave?

A) Digital
B) Analog
C) Both A and B
D) Neither A nor B
Answer: B) Analog
What is a bit in the context of digital signals?

A) The amplitude of the signal
B) The frequency of the signal
C) The smallest unit of data
D) The sampling rate
Answer: C) The smallest unit of data
Which component is essential for converting digital signals to analog signals?

A) ADC
B) DAC
C) Oscilloscope
D) Amplifier
Answer: B) DAC
The Nyquist Theorem is related to which concept in digital signal processing?

A) Modulation
B) Demodulation
C) Sampling rate
D) Quantization
Answer: C) Sampling rate
What happens when the sampling rate is too low in an analog-to-digital conversion?

A) Increased bandwidth
B) Aliasing
C) Increased noise
D) Higher resolution
Answer: B) Aliasing
A signal that varies over time to represent information is known as:

A) A constant signal
B) A variable signal
C) A time-domain signal
D) A modulated signal
Answer: C) A time-domain signal
Which of the following is a common use of digital signals?

A) Analog radio transmission
B) Vinyl records
C) Internet data transfer
D) Analog telephone lines
Answer: C) Internet data transfer

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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