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?

उत्तर देखें और व्याख्या

उत्तर: (B) 2 and 3 only

व्याख्या

RFID and WLAN are recognised short-range radio devices. CCTV is a video surveillance system, not an SRD category.