UPSC Prelims 2026
Question 72 of 100
72
Question 72
GS Paper-1 β€’ 2 Marks
Which of the following statements with regard to drone swarms is/are correct ?
1. They use Terahertz band of frequency to communicate with the command centre.
2. Individual drones in the swarm can communicate with other drones in the swarm.
3. GPS Spoofing is a commonly used technique to counter drone swarm attack.

Select the answer using the code given below :

Options

A
a) 1 only
B
b) 2 and 3 only
Correct Answer
C
c) 1 and 2 only
D
d) 1, 2 and 3

πŸ“–Detailed Explanation

Answer: (b)

Explanation:
Statement 1 is incorrect: Drone swarms primarily rely on traditional Radio Frequency (RF) bandsβ€”such as standard Ultra High Frequency (UHF) or industrial, scientific, and medical (ISM) microwave bands (e.g., 2.4 GHz and 5.8 GHz)β€”as well as satellite links to maintain contact with a ground command center.

Statement 2 is correct: A defining feature of an autonomous drone swarm is its decentralized network architecture, typically powered by Flying Ad-hoc Networks (FANETs).

Statement 3 is correct: GPS Spoofing is a highly effective, widely deployed counter-unmanned aerial system (C-UAS) technique used to neutralize drone swarm attacks.
72 / 100

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