NextMockதேர்வுகளைத் தேடுங்கள், எ.கா. SSC CGL, UPPSC, Lekhpal
UPSC PYQPrelims 2022

Civil Services Examination · வினா 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?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3
விடையைக் காட்டு & விளக்கம்

விடை: (B) 2 and 3 only

விளக்கம்

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