UPSC Prelims 2022 Question:

Consider the following communication Technologies

1. Closed- Circuit Television
2. Radio Frequency Identification
3. Wireless Local area Network
   
   

Which of the above are considered short-range devices/technologies?

Explanation:

Short Range Devices (SRD) are radio devices that offer a low risk of interference with other radio services, usually because their transmitted power, and hence their range, is low. The definition 'Short Range Device' may be applied to many different types of wireless equipment, including various forms of:

• • Access control (including door and gate openers)
  • Alarms and movement detectors

• Closed-circuit television (CCTV)

• • Cordless audio devices, including wireless microphones
  • Industrial control

• Local Area Networks

• • Medical implants
  • Metering devices
  • Remote control

• Radio frequency identification (RFID)

• Road Transport Telematics
• Telemetry.
  
  

Therefore, option (4) is the correct answer.

Subject: Science & Technology|Information and Communication Technology