Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 109
Q1541:
Fill in the blank: Multimode fiber optics are generally used in _______ environments.
A. long-distance
B. high-speed
C. high-interference
D. limited-distance
Correct Answer:
D
Chapter: 109
Q1542:
Which of the following is NOT a feature of multimode fiber optics?
A. Multiple light paths
B. Lower bandwidth compared to single-mode fiber
C. Lower cost for long-distance transmission
D. Shorter transmission range
Correct Answer:
C
Chapter: 109
Q1543:
What is the main limitation of multimode fiber optics compared to single-mode fiber?
A. It is more expensive
B. It has lower bandwidth
C. It is used for shorter distances
D. It is more durable
Correct Answer:
B
Chapter: 109
Q1544:
Which of the following types of fiber optics is most commonly used in networking and telecommunications?
A. Single-mode fiber
B. Multimode fiber
C. Coaxial cables
D. Twisted-pair cables
Correct Answer:
B
Chapter: 109
Q1545:
Fill in the blank: Multimode fiber optics are often used for _______ connections, such as those in data centers and local area networks (LANs).
A. low-speed
B. high-bandwidth
C. Coaxial cables
D. secure
Correct Answer:
B
Chapter: 110
Q1546:
What is the key feature of single-mode fiber optics?
A. Transmits multiple light signals
B. Transmits a single light signal
C. Uses radio waves
D. Transmits signals via electric current
Correct Answer:
B
Chapter: 110
Q1547:
Single-mode fiber optics are primarily used for ______.
A. Short-distance communication
B. Wi-Fi connections
C. Long-distance communication
D. Bluetooth connections
Correct Answer:
C
Chapter: 110
Q1548:
Fill in the blank: Single-mode fiber optics carry data using ______ light path.
A. multiple
B. a single
C. an invisible
D. a red
Correct Answer:
B
Chapter: 110
Q1549:
Which of the following statements is TRUE about single-mode fiber optics?
A. They have a larger core than multimode fibers
B. They transmit several light rays at once
C. They are used for long-distance data transmission
D. They are commonly found in homes
Correct Answer:
C
Chapter: 110
Q1550:
The core diameter of a typical single-mode fiber is about ______.
A. 50 microns
B. 62.5 microns
C. 8-10 microns
D. 100 microns
Correct Answer:
C
Chapter: 110
Q1551:
Which of the following is NOT true about single-mode fiber optics?
A. They provide high bandwidth
B. They support short-distance communication
C. They use a small core
D. They are used in telecommunication networks
Correct Answer:
B
Chapter: 110
Q1552:
Fill in the blank: Single-mode fibers are more suitable for ______ transmission environments.
A. urban
B. wireless
C. long-distance
D. home
Correct Answer:
C
Chapter: 110
Q1553:
Which type of laser is commonly used with single-mode fibers?
A. LED
B. Laser Diode
C. Neon
D. Fluorescent
Correct Answer:
B
Chapter: 110
Q1554:
What is the main reason single-mode fiber can transmit over longer distances than multimode fiber?
A. Smaller core size
B. Use of light signals
C. More light paths
D. Better outer covering
Correct Answer:
A
Chapter: 110
Q1555:
In single-mode fiber, which part of the fiber guides the light signal?
A. Buffer coating
B. Core
C. Cladding
D. Jacket
Correct Answer:
B
Chapter: 110
Q1556:
Fill in the blank: The light in single-mode fiber travels in a ______ path.
A. zig-zag
B. single
C. looped
D. bent
Correct Answer:
B
Chapter: 111
Q1557:
What is another name for unguided transmission media?
A. Cable communication
B. Fiber-optic transmission
C. Wireless communication
D. Satellite wire
Correct Answer:
C
Chapter: 111
Q1558:
Unguided transmission media use ______ to transport signals.
A. physical cables
B. light pulses
C. air as the medium
D. coaxial wires
Correct Answer:
C
Chapter: 111
Q1559:
In wireless communication, signals are typically transmitted through ______.
A. copper cables
B. free space
C. underground fiber
D. liquid waves
Correct Answer:
B
Chapter: 111
Q1560:
Fill in the blank: Wireless communication signals are normally ______.
A. encrypted by default
B. broadcast through free space
C. reflected using mirrors
D. transmitted using wires
Correct Answer:
B