Q#1: Transmission media refers to:
(A) The physical path through which data is transmitted
(B) The software for networking
(C) Protocols for communication
(D) Error detection methods
Answer: (A) The physical path through which data is transmitted
Q#2: Transmission media can be classified into:
(A) Guided and unguided
(B) Wired and wireless
(C) Both A and B
(D) None
Answer: (C) Both A and B
Q#3: Guided media transmits signals through:
(A) Physical conductor
(B) Air or vacuum
(C) Only optical fiber
(D) Wireless devices
Answer: (A) Physical conductor
Q#4: Unguided media transmits signals through:
(A) Physical conductor
(B) Air, vacuum, or space
(C) Coaxial cable only
(D) Fiber optic only
Answer: (B) Air, vacuum, or space
Q#5: Twisted pair cable is:
(A) Two insulated copper wires twisted together
(B) Coaxial cable
(C) Optical fiber
(D) None
Answer: (A) Two insulated copper wires twisted together
Q#6: Twisting in twisted pair cable helps:
(A) Reduce electromagnetic interference
(B) Increase bandwidth
(C) Amplify signal
(D) None
Answer: (A) Reduce electromagnetic interference
Q#7: Twisted pair cable types include:
(A) Unshielded (UTP)
(B) Shielded (STP)
(C) Both A and B
(D) Coaxial only
Answer: (C) Both A and B
Q#8: UTP cable is widely used in:
(A) LANs
(B) Telephone networks
(C) Both A and B
(D) Wireless networks
Answer: (C) Both A and B
Q#9: STP cable is used where:
(A) High noise immunity is required
(B) Low bandwidth is needed
(C) Wireless signal
(D) None
Answer: (A) High noise immunity is required
Q#10: Coaxial cable consists of:
(A) Central conductor, insulation, metallic shield, and outer jacket
(B) Two twisted wires only
(C) Fiber optic core
(D) Wireless antenna
Answer: (A) Central conductor, insulation, metallic shield, and outer jacket
Q#11: Coaxial cable is used in:
(A) Cable TV
(B) Ethernet
(C) Telephone networks
(D) LANs only
Answer: (A) Cable TV
Q#12: Coaxial cable advantage:
(A) Less susceptible to noise
(B) High bandwidth
(C) Long-distance transmission
(D) All of the above
Answer: (D) All of the above
Q#13: Coaxial cable disadvantage:
(A) Expensive
(B) Less flexible
(C) Installation cost high
(D) All of the above
Answer: (D) All of the above
Q#14: Optical fiber transmits signals using:
(A) Light
(B) Electricity
(C) Radio waves
(D) Microwaves
Answer: (A) Light
Q#15: Optical fiber types include:
(A) Single-mode
(B) Multi-mode
(C) Both A and B
(D) Coaxial
Answer: (C) Both A and B
Q#16: Single-mode fiber has:
(A) Small core, long-distance transmission
(B) Large core, short-distance
(C) Wireless capability
(D) None
Answer: (A) Small core, long-distance transmission
Q#17: Multi-mode fiber has:
(A) Large core, short-distance
(B) Small core, long-distance
(C) Single frequency
(D) None
Answer: (A) Large core, short-distance
Q#18: Optical fiber advantage:
(A) High bandwidth
(B) Less attenuation
(C) Immune to EMI
(D) All of the above
Answer: (D) All of the above
Q#19: Optical fiber disadvantage:
(A) Expensive
(B) Difficult to install
(C) Fragile
(D) All of the above
Answer: (D) All of the above
Q#20: Unguided media examples include:
(A) Radio waves
(B) Microwaves
(C) Infrared
(D) All of the above
Answer: (D) All of the above
Q#21: Radio waves are:
(A) Low-frequency electromagnetic waves
(B) High-frequency
(C) Only for satellite
(D) None
Answer: (A) Low-frequency electromagnetic waves
Q#22: Microwaves are:
(A) High-frequency electromagnetic waves
(B) Low-frequency
(C) Only optical
(D) None
Answer: (A) High-frequency electromagnetic waves
Q#23: Microwaves are used in:
(A) Satellite communication
(B) Point-to-point terrestrial communication
(C) Both A and B
(D) None
Answer: (C) Both A and B
Q#24: Infrared transmission is:
(A) Short-range line-of-sight communication
(B) Long-range communication
(C) Fiber optic
(D) Microwave
Answer: (A) Short-range line-of-sight communication
Q#25: Transmission impairment types include:
(A) Attenuation
(B) Noise
(C) Distortion
(D) All of the above
Answer: (D) All of the above
Q#26: Attenuation refers to:
(A) Loss of signal strength
(B) Signal distortion
(C) Interference
(D) Amplification
Answer: (A) Loss of signal strength
Q#27: Noise refers to:
(A) Unwanted signal
(B) Signal amplification
(C) Frequency change
(D) Phase shift
Answer: (A) Unwanted signal
Q#28: Distortion occurs due to:
(A) Nonlinearities
(B) Bandwidth limitation
(C) Both A and B
(D) None
Answer: (C) Both A and B
Q#29: Guided media provide:
(A) Higher security
(B) Limited interference
(C) Both A and B
(D) None
Answer: (C) Both A and B
Q#30: Unguided media provides:
(A) Mobility
(B) Easy installation
(C) Broadcast capability
(D) All of the above
Answer: (D) All of the above
Q#31: Twisted pair bandwidth:
(A) Low
(B) Medium
(C) High
(D) Unlimited
Answer: (A) Low
Q#32: Coaxial cable bandwidth:
(A) Medium
(B) Low
(C) Very high
(D) None
Answer: (A) Medium
Q#33: Optical fiber bandwidth:
(A) Very high
(B) Medium
(C) Low
(D) None
Answer: (A) Very high
Q#34: Electromagnetic interference (EMI) affects:
(A) Twisted pair
(B) Coaxial cable less
(C) Optical fiber not affected
(D) All of the above
Answer: (D) All of the above
Q#35: Optical fiber core is made of:
(A) Glass or plastic
(B) Copper
(C) Aluminum
(D) None
Answer: (A) Glass or plastic
Q#36: Optical fiber uses total internal reflection to:
(A) Guide light
(B) Amplify signal
(C) Reduce noise
(D) Multiplex signals
Answer: (A) Guide light
Q#37: Coaxial cable shielding protects against:
(A) EMI
(B) Noise
(C) Crosstalk
(D) All of the above
Answer: (D) All of the above
Q#38: Twisted pair disadvantage:
(A) Susceptible to EMI
(B) Limited bandwidth
(C) Short distance
(D) All of the above
Answer: (D) All of the above
Q#39: Wireless media advantage:
(A) Mobility
(B) Broadcast
(C) Easy installation
(D) All of the above
Answer: (D) All of the above
Q#40: Wireless media disadvantage:
(A) Susceptible to interference
(B) Security issues
(C) Limited bandwidth
(D) All of the above
Answer: (D) All of the above
Q#41: Microwave line-of-sight transmission requires:
(A) Towers within visual range
(B) Satellites
(C) Coaxial cable
(D) Optical fiber
Answer: (A) Towers within visual range
Q#42: Satellite communication is an example of:
(A) Unguided media
(B) Guided media
(C) Fiber optic
(D) Coaxial
Answer: (A) Unguided media
Q#43: Infrared limitation:
(A) Short range
(B) Line-of-sight only
(C) Susceptible to obstruction
(D) All of the above
Answer: (D) All of the above
Q#44: Fiber optic advantage over coaxial:
(A) Higher bandwidth
(B) Less attenuation
(C) Immunity to EMI
(D) All of the above
Answer: (D) All of the above
Q#45: Twisted pair distance limitation:
(A) 100-200 meters for LAN
(B) 1 km
(C) 10 km
(D) None
Answer: (A) 100-200 meters for LAN
Q#46: Coaxial cable distance limitation:
(A) Longer than twisted pair
(B) Shorter than twisted pair
(C) Same as twisted pair
(D) None
Answer: (A) Longer than twisted pair
Q#47: Fiber optic distance limitation:
(A) Tens of kilometers
(B) Few meters
(C) Hundreds of meters
(D) None
Answer: (A) Tens of kilometers
Q#48: Guided media installation cost:
(A) High for fiber
(B) Medium for coaxial
(C) Low for twisted pair
(D) All of the above
Answer: (D) All of the above
Q#49: Wireless media cost:
(A) Lower than fiber for deployment
(B) High security cost
(C) Maintenance cost
(D) All of the above
Answer: (D) All of the above
Q#50: The best transmission media for long-distance, high-bandwidth, low-noise communication is:
(A) Optical fiber
(B) Twisted pair
(C) Coaxial cable
(D) Radio waves
Answer: (A) Optical fiber