Wireless Communication Networks Quiz

Which component of a wireless transmitter is responsible for modulating the baseband signal onto a carrier wave?

• Antenna

• Mixer

• Modulator

• Amplifier

What is duplexing in wireless communication?

• The process of converting analog signals to digital signals.

• The process of transmitting and receiving data simultaneously on the same frequency.

• The process of encoding data for secure transmission.

• The process of amplifying weak signals for long-distance transmission.

Which band requires a license from regulatory authorities for wireless communication?

• Unlicensed bands

• ISM bands

• Industrial bands

• Licensed bands

Capacity of a channel can be increased by

• Increasing channel bandwidth

• Increasing signal power

• Increasing channel bandwidth &signal power

• None of the mentioned

Which statistical model is commonly used to describe the variability of received signal strength in a multipath environment?

• Binomial distribution model

• Gaussian distribution model

• Poisson distribution model

• Rayleigh fading model

Which type of multiplexing allocates a fixed portion of bandwidth to each communication channel?

• Fixed Assignment Multiplexing

• Statistical Multiplexing

• Time-Division Multiplexing

• Frequency-Division Multiplexing

Which process is commonly used to model the arrival of packets in Aloha-based systems?

• Exponential distribution

• Gaussian distribution

• Poisson process

• Bernoulli process

A station sends a frame whenever one is available and the sender waits for an arbitrary period of time before retransmitting the frame if there is a collision and it is destroyed. This type of multiple access protocol named as

• Aloha

• Slotted Aloha

• Pure Aloha

• Adaptive Aloha

What is the purpose of the RTS-CTS mechanism in Wi-Fi networks?

• To reserve the channel for a specific duration

• To detect collisions before transmission

• To synchronize transmission among nodes

• To prevent collisions caused by hidden terminals

In a cellular system, what defines an interference-limited system?

• Limited number of cell sites

• Limited bandwidth availability

• Limited power transmission

• Limited interference from neighboring cells