CWT Wireless Standards & Radio Frequency Fundamentals

Question 1

What is the primary purpose of wireless standards?

Accepted Answer

To ensure interoperability and consistent performance

Answer

To restrict access to wireless devices.

Answer

To make systems proprietary.

Answer

To increase interference.

Question 2

Which organization defines the 802.11 wireless standards?

Accepted Answer

IEEE

Answer

FCC

Answer

Wi-Fi Alliance

Answer

ITU

Question 3

What is the typical frequency range for 2.4 GHz Wi-Fi?

Accepted Answer

2400–2483.5 MHz

Answer

1800–1900 MHz

Answer

5200–5800 MHz

Answer

700–800 MHz

Question 4

What is RF signal attenuation?

Accepted Answer

Loss of signal strength over distance or obstacles

Answer

Signal amplification.

Answer

Signal encryption.

Answer

Signal boosting with antennas.

Question 5

What causes multipath interference in RF signals?

Accepted Answer

Signal reflections from walls and objects

Answer

Direct signal transmission only.

Answer

Low bandwidth usage.

Answer

High encryption levels.

Question 6

What is the function of an antenna in wireless communication?

Accepted Answer

Converts signals between electrical and electromagnetic forms

Answer

Increases data storage.

Answer

Performs error correction.

Answer

Generates encryption keys.

Question 7

Which band provides higher speeds but shorter range in Wi-Fi?

Accepted Answer

5 GHz

Answer

2.4 GHz

Answer

900 MHz

Answer

1.2 GHz

Question 8

What is the role of the FCC in wireless communication?

Accepted Answer

Regulating frequency use and minimizing interference

Answer

Creating wireless hardware.

Answer

Developing software protocols.

Answer

Manufacturing antennas.

Question 9

What does RSSI measure in wireless networks?

Accepted Answer

Signal strength at the receiver

Answer

Frequency width.

Answer

Bandwidth usage.

Answer

Packet size.