Brute Force Jamming employs three modes. Which of the following lists those modes?

• A. Spot, Broadband, and Swept-Spot
• B. Pulse, Sweep, and Random
• C. Continuous, Intermittent, and Adaptive
• D. Narrowband, Wideband, and Ultra-wideband

Answer: (A)

Brute force jamming defeats a signal by overwhelming it with high-power interference, and it uses three practical modes to cover different targeting needs. The first is Spot, which concentrates a large amount of power on a single frequency so the target signal on that frequency is buried in noise and becomes unreadable. This is most effective when you know exactly where the signal is and want maximum disruption on that channel.

The second mode is Broadband, where energy is spread across a wide portion of the spectrum. By jamming many frequencies at once, it disrupts multiple channels simultaneously, which is useful when the jammer cannot predict exactly which frequencies will be used or wants to blunt all nearby communications at once.

The third mode is Swept-Spot, which keeps energy concentrated in a narrow instantaneous bandwidth but rapidly sweeps the concentration across a band. As the sweep passes through different frequencies, those signals are jammed in turn, providing broad disruption with less total power than blasting every frequency at once.

Together, these modes give targeted, broad, and rapidly sweeping disruption options, which is the essence of brute force jamming. Other groupings describe different concepts that don’t align with this standard triad.