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Q72·GS Paper 1 · Prelims 2026

Swarm Drone Tactics & Communications

S&TDefence TechnologyStatement-basedHardStatic

Question

Which of the following statements with regard to drone swarms is/are correct?

1They use Terahertz band of frequency to communicate with the command centre.
2Individual drones in the swarm can communicate with other drones in the swarm.
3GPS Spoofing is a commonly used technique to counter drone swarm attack.

Select the answer using the code given below :

Options

a

1 only

b

2 and 3 only

Answer
c

1 and 2 only

d

1, 2 and 3

Explanation

Statements 2 and 3 are correct. Drone swarms rely on decentralized ad-hoc mesh networking architectures, which allow individual units to communicate directly with each other to coordinate flight patterns. Electronic warfare units frequently use GPS spoofing to counter these attacks by transmitting fake satellite signals that disrupt the swarm's localized coordinates. Statement 1 is incorrect because drone networks utilize standard microwave frequencies (such as UHF, L, or S bands) for long-range communications, whereas the Terahertz band is limited by short range and high atmospheric attenuation.

Question details

Year

2026

Paper

GS Paper 1

Question

Q72

Subject

Science & Technology

Sub-topic

Defence Technology

Type

Statement-based

Difficulty

Hard

Nature

Static

Source hint

Defense technology papers / Advanced telecommunication protocols

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