Consider the following communication technologies :
- Closed-circuit Television
- Radio Frequency Identification
- Wireless Local Area Network
Which of the above are considered Short-Range devices/technologies ?
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC IAS – 2022
– RFID systems, especially passive RFID, have very short read ranges (centimeters to meters), though active RFID can extend this. They are primarily for local identification or tracking.
– WLAN (Wi-Fi) is designed for local area coverage within buildings, homes, or limited outdoor hotspots, typically extending tens to hundreds of meters.