Consider the following statements:

1. Drone swarms typically use the Terahertz band to link with their command centre.

2. Individual drones within a swarm can communicate directly with each other.

3. Jamming and spoofing are common electronic countermeasures against drone swarms.

Which of the statements given above is/are correct?A.1 and 2 onlyB.2 and 3 onlyC.1 and 3 onlyD.1, 2 and 3

Question

Consider the following statements: 1. Drone swarms typically use the Terahertz band to link with their command centre. 2. Individual drones within a swarm can communicate directly with each other. 3. Jamming and spoofing are common electronic countermeasures against drone swarms. Which of the statements given above is/are correct?

Accepted Answer

2 and 3 only. The correct answer is 2 and 3 only. UPSC's provisional key for the 2026 paper gives 2 and 3 only for this question. So statement 1, about Terahertz, is the false one. Statement 2 is right because individual drones in a swarm can communicate with each other. Statement 3 is accepted as right. Business Today says Bhargavastra can add an optional soft-kill layer for jamming and spoofing. Indian Defence News says traditional jamming or spoofing methods are inadequate against such threats, so Bhargavastra is built as a hard-kill system. Read more: SciTech0137 — Drone Swarms: Technology and Tactics.

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