Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 103
Q1441:
Fill in the blank: Coaxial cable has a ______ core surrounded by insulating and shielding layers.
A. copper
B. fiber
C. optical
D. steel
Correct Answer:
A
Chapter: 103
Q1442:
Which cable type is best suited for long-distance, high-speed data transmission?
A. Twisted-pair
B. Coaxial
C. Fiber optic
D. Parallel
Correct Answer:
B
Chapter: 103
Q1443:
Which type of cable uses light signals for data transmission?
A. Twisted-pair
B. Coaxial
C. Fiber optic
D. All of the above
Correct Answer:
C
Chapter: 103
Q1444:
In coaxial cables, the outer metallic shield is used to ______.
A. provide power
B. reduce noise
C. increase bandwidth
D. improve speed
Correct Answer:
B
Chapter: 103
Q1445:
What distinguishes coaxial cables from twisted-pair cables?
A. Core insulation
B. Shielding layers
C. Copper usage
D. Wire thickness
Correct Answer:
B
Chapter: 103
Q1446:
Fill in the blank: The signal in guided media is ______ by the physical boundaries of the medium.
A. amplified
B. rejected
C. reflected
D. contained
Correct Answer:
D
Chapter: 103
Q1447:
Which of the following is most prone to crosstalk?
A. Coaxial cable
B. Twisted-pair cable
C. Fiber optic cable
D. Optical receiver
Correct Answer:
B
Chapter: 103
Q1448:
Twisted-pair cables are primarily used in ______.
A. satellite links
B. optical transmission
C. telephony and LANs
D. radio broadcasting
Correct Answer:
C
Chapter: 103
Q1449:
Fill in the blank: The main advantage of fiber optic cable over other guided media is its high ______.
A. cost
B. signal loss
C. speed
D. weight
Correct Answer:
C
Chapter: 103
Q1450:
Which cable type uses the difference in voltage between two wires to transmit signals?
A. Fiber optic
B. Twisted-pair
C. Coaxial
D. RF cable
Correct Answer:
B
Chapter: 103
Q1451:
Fiber optic cables are made of ______.
A. copper
B. plastic
C. glass or plastic fibers
D. iron
Correct Answer:
C
Chapter: 103
Q1452:
What problem does twisting the wires in a twisted-pair cable solve?
A. Signal reflection
B. Overheating
C. Interference and crosstalk
D. Slower speed
Correct Answer:
C
Chapter: 103
Q1453:
In a twisted-pair cable, the plastic insulation is primarily for ______.
A. weight
B. protection
C. signal boosting
D. aesthetics
Correct Answer:
B
Chapter: 103
Q1454:
Which of the following is NOT a characteristic of twisted-pair cables?
A. Twisted conductors
B. Plastic insulation
C. Glass core
D. Interference handling
Correct Answer:
C
Chapter: 104
Q1455:
What does UTP stand for in networking cables?
A. Unlinked Twisted Pair
B. Unshielded Twisted Pair
C. Universal Twisted Pair
D. Underground Twisted Pair
Correct Answer:
B
Chapter: 104
Q1456:
What is the full form of STP in networking?
A. Shielded Twisted Pair
B. Structured Twisted Pair
C. Special Twisted Pair
D. Secure Twisted Pair
Correct Answer:
A
Chapter: 104
Q1457:
STP cables differ from UTP cables by having ______.
A. more bandwidth
B. less insulation
C. additional shielding
D. fiber optic core
Correct Answer:
C
Chapter: 104
Q1458:
Which type of cable is more resistant to external interference?
A. UTP
B. STP
C. Both UTP and STP
D. None of these
Correct Answer:
B
Chapter: 104
Q1459:
Fill in the blank: ______ cables are cheaper and more commonly used in LANs.
A. Fiber optic
B. Coaxial
C. UTP
D. STP
Correct Answer:
C
Chapter: 104
Q1460:
What is a disadvantage of STP over UTP?
A. Higher signal loss
B. Lower speed
C. Higher cost
D. Less availability
Correct Answer:
C