[1] What is the frequency range of the microwave band?

A) 3 GHz to 30 GHz

B) 300 MHz to 3 GHz

C) 30 MHz to 300 MHz

D) 3 MHz to 30 MHz

[2] What is the primary use of the 2.4 GHz ISM band?

A) Cellular communication

B) Wireless local area networks (WLANs)

C) Satellite communication

D) Broadcasting

[3] What is the primary advantage of using a spread spectrum technique in wireless communication?

A) Increased data rate

B) Increased signal power

C) Increased resistance to interference and jamming

D) Increased signal range

[4] Which of the following is not a type of spread spectrum technique?

A) Frequency Hopping

B) Direct Sequence

C) Amplitude Modulation

D) Code Division Multiple Access (CDMA)

[5] What is the primary advantage of using MIMO (multiple input, multiple output) technology in wireless communication?

A) Increased signal power

B) Increased resistance to interference and jamming

C) Increased data rate and capacity

D) Increased signal range

[6] What is the full form of OFDM?

A) Orthogonal Frequency Division Modulation

B) Orthogonal Frequency Division Multiplexing

C) Orthogonal Frequency Division Multiple Access

D) Orthogonal Frequency Division Modulator

[7] What is the primary use of the 5 GHz ISM band?

A) Cellular communication

B) Wireless local area networks (WLANs)

C) Satellite communication

D) Broadcasting

[8] What is the main advantage of FHSS (Frequency Hopping Spread Spectrum) over DSSS (Direct Sequence Spread Spectrum)?

A) FHSS is more resistant to jamming

B) FHSS has a higher data rate

C) FHSS uses a wider frequency band

D) FHSS is more resistant to interference

[9] What is the main advantage of TDMA (Time Division Multiple Access) over FDMA (Frequency Division Multiple Access)?

A) TDMA allows more users to share the same frequency band

B) TDMA has a higher data rate

C) TDMA is more resistant to interference

D) TDMA is more resistant to jamming

[10] What is the main advantage of CDMA (Code Division Multiple Access) over other multiple access techniques?

A) CDMA allows more users to share the same frequency band

B) CDMA has a higher data rate

C) CDMA is more resistant to interference

D) CDMA is more resistant to jamming

Answers:

[1] A) 3 GHz to 30 GHz

[2] B) Wireless local area networks (WLANs)

[3] C) Increased resistance to interference and jamming

[4] C) Amplitude Modulation

[5] C) Increased data rate and capacity

[6] A) Orthogonal Frequency Division Modulation

[7] B) Wireless local area networks (WLANs)

[8] A) FHSS is more resistant to jamming

[9] A) TDMA allows more users to share the same frequency band

[10] C) CDMA is more resistant to interference