Which description best matches hopped/swept jamming?

Which description best matches hopped/swept jamming?

• A. Using a narrowband waveform to sweep across multiple target signals
• B. Spot jamming on a single freq
• C. Jamming multiple target signals using a wideband waveform
• D. Modulation of a signal with intelligible data that can be broken out and interpreted

Answer: (A)

Hopped/swept jamming uses a narrowly focused jammer that changes frequency quickly (hopping) or sweeps across a range of frequencies to disrupt several links over time. The essence is concentrated energy that moves across the spectrum to affect multiple target signals, rather than flooding a wide band all at once or staying on one frequency. That’s why describing it as using a narrowband waveform to sweep across multiple target signals best captures the technique: a narrowband signal is allocated to each moment of the jam, and as it hops or sweeps, it reaches different targets. The other descriptions don’t fit as well. Spot jamming sticks to a single frequency with a fixed jammer; wideband jamming uses a broad signal to cover many frequencies at once rather than moving across them; and the option about modulating a signal with intelligible data refers to intercepting or disguising data, not the selective frequency movement of hopped/swept jamming.

Hopped/swept jamming uses a narrowly focused jammer that changes frequency quickly (hopping) or sweeps across a range of frequencies to disrupt several links over time. The essence is concentrated energy that moves across the spectrum to affect multiple target signals, rather than flooding a wide band all at once or staying on one frequency.

That’s why describing it as using a narrowband waveform to sweep across multiple target signals best captures the technique: a narrowband signal is allocated to each moment of the jam, and as it hops or sweeps, it reaches different targets.

The other descriptions don’t fit as well. Spot jamming sticks to a single frequency with a fixed jammer; wideband jamming uses a broad signal to cover many frequencies at once rather than moving across them; and the option about modulating a signal with intelligible data refers to intercepting or disguising data, not the selective frequency movement of hopped/swept jamming.