Q. Which of the following statements with regard to drone swarms is/are correct?
I. They use Terahertz band of frequency to communicate with the command centre.
II. Individual drones in the swarm can communicate with other drones in the swarm.
III. GPS Spoofing is a commonly used technique to counter drone swarm attack.
Select the answer using the code given below:
1. (a) 1 only
2. (b) 2 and 3 only
3. (c) 1 and 2 only
4. (d) 1, 2 and 3

Answer : B

Explanation:

Statement 1 is not correct: Drones in a swarm conventionally use radio frequency (RF) communication devices to communicate with each other and with command centres. Terahertz (THz) band is a futuristic research area being explored for next-generation communications.
Statement 2 is correct: A key feature of drone swarms is that individual drones communicate with each other within the swarm, as well as with the drone control station, through wireless communication channels.
Statement 3 is correct: GPS spoofing is implemented as an effective electronic countermeasure technique to mislead drone navigation systems, dynamic spoofing combined with no-fly zone enforcement proved particularly effective in forcing drones to land or exhibit erratic behaviour.

Sources:

https://patents.justia.com/patent/12009902

https://www.mdpi.com/2504-446X/8/12/743