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Q66 (IAS/2022) Science & Technology â€ș ICT, AI, Cybersecurity & Emerging Tech â€ș Wireless communication technologies Official Key

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 ?

Result
Your answer: —  Â·  Correct: D
Explanation

The correct answer is Option 4 (1, 2 and 3). Short-range devices (SRDs) are communication technologies designed to transmit data over limited distances with low power consumption and minimal interference risk.

  • Closed-circuit Television (CCTV): While the cameras themselves capture video, the communication link between the camera and the monitor/recorder is typically confined to a specific building or site, qualifying it as a short-range application.
  • Radio Frequency Identification (RFID): This technology uses electromagnetic fields to identify and track tags attached to objects. Its operational range is extremely short, varying from a few centimeters to a few meters.
  • Wireless Local Area Network (WLAN): Technologies like Wi-Fi operate within a restricted range (typically 20–100 meters) to provide local connectivity, fitting the definition of short-range wireless communication.

Since all three technologies operate within localized, restricted distances rather than long-range or global scales, Option 4 is the most accurate classification.

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Don’t just practise – reverse-engineer the question. This panel shows where this PYQ came from (books / web), how the examiner broke it into hidden statements, and which nearby micro-concepts you were supposed to learn from it. Treat it like an autopsy of the question: what might have triggered it, which exact lines in the book matter, and what linked ideas you should carry forward to future questions.
Q. Consider the following communication technologies : 1. Closed-circuit Television 2. Radio Frequency Identification 3. Wireless Local A

At a glance
Origin: Books + Current Affairs Fairness: Low / Borderline fairness Books / CA: 3.3/10 · 3.3/10
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This question is less about memorizing a government list of 'Short Range Devices' and more about applying common sense to the definitions. 'Closed-Circuit' and 'Local Area' literally imply limited range. Don't over-research technical manuals; focus on the functional scope (Local vs. Global) of the technology.

How this question is built

This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.

Statement 1
Is Closed-circuit Television (CCTV) considered a short-range communication device/technology?
Origin: Weak / unclear Fairness: Borderline / guessy
Indirect textbook clues
INDIA PEOPLE AND ECONOMY, TEXTBOOK IN GEOGRAPHY FOR CLASS XII (NCERT 2025 ed.) > Chapter 7: Transport and Communication > Television (T.V.) > p. 83
Strength: 4/5
“Television broadcasting has emerged as the most effective audio-visual medium for disseminating information and educating masses. Initially, the T.V. services were limited only to the National Capital where it began in 1959. After 1972, several other centres became operational. In 1976, TV was delinked from All India Radio (AIR) and got a separate identity”
Why relevant

This snippet explains television as an audio‑visual broadcasting medium and emphasises its role as mass communication via broadcast transmitters.

How to extend

A student could contrast broadcast TV's wide-area transmission infrastructure with CCTV's closed/local distribution to infer CCTV is not a broadcast (hence more likely short‑range/local).

FUNDAMENTALS OF HUMAN GEOGRAPHY, CLASS XII (NCERT 2025 ed.) > Chapter 6: Tertiary and Quaternary Activities > Telecommunications > p. 49
Strength: 4/5
“The use of telecommunications is linked to the development of modern technology. It has revolutionised communications because of the speed with which messages are sent. The time reduced is from weeks to minutes. Besides, the recent advancements like mobile telephony have made communications direct and instantaneous at any time and from anywhere. The telegraph, morse code and telex have almost become things of the past. Radio and television also help to relay news, pictures, and telephone calls to vast audiences around the world and hence they are termed as mass media. They are vital for advertising and entertainment. Newspapers are able to cover events in all corners of the world.”
Why relevant

Defines telecommunications by the speed and range of message transmission and distinguishes mass media (radio/TV) from other services.

How to extend

Using this rule, a student can ask whether CCTV transmits to broad audiences (mass media) or to limited/local monitors, and treat the latter as short‑range telecom use.

Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 30: World Communications > COMMUNICATIONS > p. 310
Strength: 3/5
“the range of distance over which mail of all kinds could be delivered in comparatively good time and at a very small cost in the form of stamps. With the advent of telecommunications, messages and news could be transmitted almost instantaneously simply by the use of telegraphs, telephones, cable or the telex system, by which written messages sent out from one end of the world can be typed out at the other end by a teleprinter. The development of radio, later television, and more recently space satellites marks the climax of Man's effort in the science of telecommunications. News read out at the BBC, London can be heard simultaneously in any part of the globe by tuning to the right wave-length on the radio sets.”
Why relevant

Describes development of communications from telegraph/telephone to radio/television and highlights differences in transmission reach (global radio/TV reception).

How to extend

A student could use the pattern that technologies labelled 'broadcast' reach large/global audiences, whereas systems lacking broadcast infrastructure (like closed circuits) imply limited range.

FUNDAMENTALS OF HUMAN GEOGRAPHY, CLASS XII (NCERT 2025 ed.) > Chapter 7: Transport and Communication > Satellite Communication > p. 68
Strength: 4/5
“Today Internet is the largest electronic network on the planet connecting about 1,000 million people in more than 100 countries. Satellites touch human lives in many ways. Every time you use a cell phone to call a friend, send an SMS or watch a popular programme on cable television. You are using satellite communication. Communication through satellites emerged as a new area in communication technology since the 1970s after U.S.A. and former U.S.S.R. pioneered space research. Artificial satellites, now, are successfully deployed in the earth's orbit to connect even the remote corners of the globe with limited onsite verification. These have rendered the unit cost and time of communication invariant in terms of distance.”
Why relevant

Explains satellite communication as enabling long‑distance/global connectivity and making distance irrelevant for some services.

How to extend

By contrasting satellite/long‑haul systems with local camera‑to‑monitor links, a student can infer CCTV (if lacking satellite/long‑haul links) is short‑range.

Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 14: Service Sector > Communication Sector > p. 432
Strength: 4/5
“The communication service is defined as the transmission of messages, particularly sending and receiving information. Development of satellite communication and mobile technologies gives prominence to this sector.”
Why relevant

Gives a compact definition of 'communication service' as transmission of messages and notes the prominence of satellite and mobile technologies in the sector.

How to extend

A student can use this definition to categorize CCTV by checking its transmission method (local wired/wireless vs. satellite/mobile) to judge whether it fits 'short‑range'.

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