Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q1581: Which frequency range does NOT match the listed wave type?
- A: 3 kHz–1 GHz: Radio waves
- B: 1 GHz–300 GHz: Microwaves
- C: 300 GHz–3 THz: Microwaves
- D: 1 GHz–300 GHz: Radio waves
View Answer
D
Q1582: What is the frequency range of microwaves?
- A: 300 kHz to 3 MHz
- B: 3 kHz to 300 kHz
- C: 1 GHz to 300 GHz
- D: 300 GHz to 400 THz
View Answer
C
Q1583: Microwaves are considered ______ in nature.
- A: Bidirectional
- B: Multidirectional
- C: Unidirectional
- D: Omnidirectional
View Answer
C
Q1584: Which type of wave can be narrowly focused using an antenna?
- A: Infrared
- B: Microwave
- C: Radio
- D: X-ray
View Answer
B
Q1585: Which of the following is TRUE about microwave communication?
- A: Microwaves cannot be directed
- B: Microwaves are randomly broadcast
- C: Microwaves can be narrowly focused
- D: Diffuse scattering occurs
View Answer
B
Q1586: What type of antenna is used to transmit focused microwave signals?
- A: Omnidirectional
- B: Parabolic
- C: Dipole
- D: Whip
View Answer
B
Q1587: Infrared waves fall in which frequency range?
- A: 3 kHz to 30 MHz
- B: 1 GHz to 300 GHz
- C: 300 GHz to 400 THz
- D: 400 THz to 700 THz
View Answer
C
Q1588: Which of the following statements is true about infrared waves?
- A: They are used for long-range communication
- B: They can be used for short-range communication
- C: They penetrate walls easily
- D: They operate below 1 GHz
View Answer
B
Q1589: Fill in the blank: ______ communication uses high frequency waves that cannot penetrate walls.
- A: Microwave
- B: Infrared
- C: Radio
- D: X-ray
View Answer
B
Q1590: Which wave type is ideal for controlling interference between nearby systems?
- A: Microwaves
- B: Radio waves
- C: Infrared waves
- D: Gamma rays
View Answer
C