ATE6123 Fundamental of Wireless Communications - Topic 3

What is the typical maximum range of a Wireless Personal Area Network (WPAN)?

• 1 kilometer

• 100 meters

• 10 meters

• 500 meters

What is one major advantage of WPANs?

• High-speed long-distance communication

• Use of fiber optic cables

• Elimination of wires and low power usage

• Requires large infrastructure

Bluetooth operates in which frequency band?

• 900 MHz

• 1.8 GHz

• 2.4 GHz ISM band

• 5 GHz band

What is the maximum number of active slaves a master can connect to in a Bluetooth piconet?

• 5

• 7

• 10

• 200

Which of the following is true about passive RFID tags?

• They have high storage capacity and long read range

• They contain an internal battery

• They are typically read-only and have shorter read ranges

• They cost more than active tags

What is one main advantage of RFID over barcodes?

• Requires line of sight to be read

• Can only read one item at a time

• Tags must be manually scanned

• Can read multiple items without line of sight

What type of coupling is used in Low Frequency (LF) RFID communication?

• Propagation coupling

• Capacitive coupling

• Inductive coupling

• Electrical coupling

What is the operating frequency of NFC technology?

• 125 KHz

• 900 MHz

• 13.56 MHz

• 2.4 GHz

What is one reason NFC is considered secure for mobile payments?

• It uses magnetic stripe data

• It relies on user-entered PINs

• It uses dynamically encrypted data

• It stores payment information in plain text

What is a major challenge in securing WPANs?

• They use only wired communication

• Devices have unlimited processing power

• Small devices struggle with complex encryption due to limited resources

• WPANs require no authentication or encryption