Radio Engineering - Bluetooth, RFID and NFC

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

• 10 feet (3 meters)

• 33 feet (10 meters)

• 100 feet (30 meters)

• 300 feet (91 meters)

Which of the following is NOT a current application of WPANs?

• Home control systems

• Industrial control systems

• Connecting to satellite internet

• Security systems

What is one of the key advantages of WPANs due to their short-range nature?

• High power consumption

• Large device size

• Long battery life

• High data transmission speed

Which historical figure is Bluetooth technology named after?

• King Harold Bluetooth

• King Arthur

• Julius Caesar

• Alexander the Great

Bluetooth technology operates in which frequency band?

• 5 GHz

• 2.4 GHz

• 1.8 GHz

• 900 MHz

What does RFID stand for?

• Radio Frequency Identification 

• Radio Frequency Integration 

• Rapid Frequency Identification 

• Radio Fast Identification 

Which of the following is a characteristic of RFID technology?

• Requires physical contact between reader and tagged item 

• Uses radio-frequency waves to transfer data 

• Only works with high-cost components 

• Cannot be integrated with backend systems 

What is a primary advantage of RFID over barcodes?

• Requires line of sight for reading 

• Limited data storage 

• Can read multiple items with a single scan 

• Limited to identifying categories of items 

Which type of RFID tag is battery-powered and can be read from longer distances?

• Passive Tags 

• Active Tags 

• Read-only Tags 

• Write Once, Read Many (WORM) Tags 

What is NFC and how does it relate to RFID?

• NFC is a type of barcode technology 

• NFC is a subset of RFID, enabling close-range communication 

• NFC is a form of optical character recognition 

• NFC is a completely separate technology from RFID