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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?

UPSC · 2022 · Environment & Science & Technology
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?

Options

1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
Answer: 1, 2 and 3

Explanation:
All listed technologies operate over short ranges—CCTV uses wired or limited wireless links, RFID and WLAN are inherently short-distance communication systems.

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