Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 106
Q1501:
BNC connectors are more commonly used in ______.
A. home routers
B. CCTV systems
C. LAN switches
D. Wi-Fi networks
Correct Answer:
B
Chapter: 106
Q1502:
Which of the following is NOT true about BNC connectors?
A. They use a bayonet-style lock
B. They are used with coaxial cables
C. They are commonly used in HDMI setups
D. They support analog and digital signals
Correct Answer:
C
Chapter: 106
Q1503:
Which type of signal is often transmitted using BNC connectors?
A. Audio only
B. Power signal only
C. Video signals
D. Wi-Fi signals
Correct Answer:
C
Chapter: 107
Q1504:
What material is primarily used in fiber optic cables?
A. Copper
B. Aluminum
C. Glass or plastic
D. Silver
Correct Answer:
C
Chapter: 107
Q1505:
Fiber optic cables transmit signals in the form of ______.
A. Electric current
B. Magnetic waves
C. Light
D. Radiowaves
Correct Answer:
C
Chapter: 107
Q1506:
Fill in the blank: Light travels in a ______ line through a uniform substance.
A. zigzag
B. straight
C. spiral
D. random
Correct Answer:
B
Chapter: 107
Q1507:
What happens when light passes from one substance to another of different density?
A. It disappears
B. It speeds up
C. It changes direction
D. It becomes polarized
Correct Answer:
C
Chapter: 107
Q1508:
Which phenomenon is utilized in fiber optics to keep light inside the cable?
A. Reflection
B. Refraction
C. Total internal reflection
D. Diffraction
Correct Answer:
C
Chapter: 107
Q1509:
Fiber optic cable is made of ______.
A. plastic or glass
B. iron or copper
C. rubber or silicon
D. silver and tin
Correct Answer:
A
Chapter: 107
Q1510:
Fill in the blank: When a light ray enters a substance of different density, it ______.
A. splits into two
B. bends
C. amplifies
D. stops
Correct Answer:
B
Chapter: 107
Q1511:
What is the main advantage of fiber optic cables?
A. High resistance to interference
B. Cheap installation
C. Used for analog signals
D. Used only for short distances
Correct Answer:
A
Chapter: 107
Q1512:
Which type of data transmission is supported by fiber optic cables?
A. Electrical
B. Magnetic
C. Optical
D. Sound
Correct Answer:
C
Chapter: 107
Q1513:
Fiber optic cable is better than coaxial cable in terms of ______.
A. signal distortion
B. distance covered
C. cost
D. weight
Correct Answer:
B
Chapter: 107
Q1514:
What causes the bending of light in fiber optics?
A. Magnetism
B. Temperature change
C. Change in medium density
D. Light color
Correct Answer:
C
Chapter: 107
Q1515:
Which of the following is a disadvantage of fiber optic cables?
A. High bandwidth
B. Expensive compared to copper cables
C. No electromagnetic interference
D. Lightweight
Correct Answer:
B
Chapter: 107
Q1516:
Fill in the blank: ______ is the bending of light as it enters a different medium.
A. Reflection
B. Absorption
C. Refraction
D. Diffusion
Correct Answer:
C
Chapter: 107
Q1517:
Which layer of the OSI model is concerned with fiber optic cables?
A. Application layer
B. Network layer
C. Physical layer
D. Session layer
Correct Answer:
C
Chapter: 107
Q1518:
The light in a fiber optic cable is usually kept inside by ______.
A. mirrors
B. total internal reflection
C. coaxial wrapping
D. magnetic fields
Correct Answer:
B
Chapter: 107
Q1519:
Which term best describes light signal behavior in uniform medium?
A. Diffused
B. Refracted
C. Straight line
D. Scattered
Correct Answer:
C
Chapter: 107
Q1520:
Fiber optic cables are commonly used in ______.
A. telephone lines
B. electrical wiring
C. TV remotes
D. power lines
Correct Answer:
A