Civil Services Examination · প্রশ্ন 36
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?
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (B) 2 and 3 only
ব্যাখ্যা
RFID and WLAN are recognised short-range radio devices. CCTV is a video surveillance system, not an SRD category.