Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 102
Q1421:
Which of the following is not used in unguided transmission?
A. Infrared waves
B. Microwaves
C. Coaxial cables
D. Radio waves
Correct Answer:
C
Chapter: 102
Q1422:
Which of the following is a major disadvantage of unguided media?
A. Requires physical installation
B. High bandwidth
C. Easy to install
D. Susceptible to interference
Correct Answer:
D
Chapter: 102
Q1423:
What is the major benefit of guided media?
A. No need for wiring
B. Less affected by noise
C. High installation cost
D. Fast satellite linking
Correct Answer:
B
Chapter: 102
Q1424:
Which of the following offers the highest data transmission speed?
A. Twisted pair
B. Coaxial cable
C. Optical fiber
D. Radio wave
Correct Answer:
C
Chapter: 102
Q1425:
Fill in the blank: ______ cables consist of a central conductor, insulator, metallic shield, and outer cover.
A. Optical fiber
B. Twisted pair
C. Coaxial
D. Infrared
Correct Answer:
C
Chapter: 102
Q1426:
Which medium is best suited for long-distance high-speed data transmission?
A. Twisted pair
B. Optical fiber
C. Infrared
D. Microwave
Correct Answer:
B
Chapter: 102
Q1427:
Unguided media are also known as ______ transmission.
A. physical
B. broadcast
C. wireless
D. satellite
Correct Answer:
C
Chapter: 102
Q1428:
Which of the following uses line-of-sight for signal transmission?
A. Coaxial cable
B. Twisted pair
C. Microwave
D. Optical fiber
Correct Answer:
C
Chapter: 102
Q1429:
Fill in the blank: In guided media, data transmission occurs through a ______ medium.
A. physical
B. visual
C. wireless
D. magnetic
Correct Answer:
A
Chapter: 102
Q1430:
What differentiates guided and unguided transmission media?
A. Speed
B. Direction
C. Use of physical path
D. Power consumption
Correct Answer:
C
Chapter: 102
Q1431:
Which is most vulnerable to weather interference?
A. Optical fiber
B. Twisted pair
C. Coaxial cable
D. Radio waves
Correct Answer:
D
Chapter: 102
Q1432:
What is used in fiber optics to transmit data?
A. Light pulses
B. Radio signals
C. Electricity
D. Magnetic waves
Correct Answer:
A
Chapter: 102
Q1433:
Which medium is most commonly used in LAN cabling?
A. Coaxial cable
B. Twisted pair
C. Infrared
D. Radio waves
Correct Answer:
B
Chapter: 103
Q1434:
Which of the following is NOT a type of guided transmission medium?
A. Twisted-pair cable
B. Coaxial cable
C. Fiber optic cable
D. Microwave
Correct Answer:
D
Chapter: 103
Q1435:
Twisted-pair cable consists of ______ copper conductors.
A. 1
B. 2
C. 3
D. 4
Correct Answer:
B
Chapter: 103
Q1436:
Each copper conductor in a twisted-pair cable is covered with ______.
A. rubber
B. metal
C. plastic
D. insulation
Correct Answer:
C
Chapter: 103
Q1437:
What helps reduce electromagnetic interference in twisted-pair cables?
A. Plastic coating
B. Twisting of wires
C. Metal shield
D. Length of wire
Correct Answer:
B
Chapter: 103
Q1438:
Fill in the blank: In a twisted-pair cable, the receiver detects signals based on the ______ between the wires.
A. resistance
B. voltage difference
C. length difference
D. frequency
Correct Answer:
B
Chapter: 103
Q1439:
What issue is commonly associated with twisted-pair cables?
A. Latency
B. Interference and crosstalk
C. Bandwidth overload
D. Data redundancy
Correct Answer:
B
Chapter: 103
Q1440:
Which of the following media offers the highest resistance to interference?
A. Twisted-pair
B. Coaxial cable
C. Fiber optic cable
D. Microwave
Correct Answer:
C