NCP-AIO Installation and Deployment Practice Question
Exhibit
nvidia-smi -q -d PERFORMANCE Performance State : P12 Clocks Throttle Reasons : SW Power Cap
Refer to the exhibit. An AI engineer observes that a model training job is running slower than expected. Based on the output, what is the primary cause of the performance degradation?
⚠ Common exam trap
Candidates frequently mistake power throttling for thermal throttling. They look at temperature metrics instead of examining the specific 'Power Cap' status flag, which indicates an administrative software limit is active.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
An administrator has set a software power limit that is lower than the GPU's maximum performance threshold.
The 'SW Power Cap' throttle reason indicates that the power limit is configured below the card's maximum design capacity, causing the GPU to downclock to P12 state to stay within the power envelope. This is crucial for AI operations because it signals that the hardware is being artificially throttled, necessitating a review of power policies to ensure optimal training performance in high-compute scenarios.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The GPU is overheating and the thermal management system has engaged to prevent hardware damage.
Why it's wrong here
Thermal throttling would be indicated by 'HW Thermal Slowdown' in the throttle reasons field. The presence of 'SW Power Cap' specifically points to a configuration constraint set by the software, not a cooling system failure or excessive ambient temperatures affecting the GPU's operational state.
- ✗
The GPU is currently idle and the driver has shifted the card to an energy-saving state.
Why it's wrong here
While P12 is a low-power state, the explicit mention of 'SW Power Cap' in the throttle reasons confirms that the driver is actively restricting performance due to policy settings. This is distinct from a normal idle state transition, which would not typically trigger a throttle reason alert.
- ✓
An administrator has set a software power limit that is lower than the GPU's maximum performance threshold.
Why this is correct
The 'SW Power Cap' indicator explicitly confirms that an administrative policy or software command has capped the power usage of the GPU. This forces the GPU to maintain lower clock speeds, directly impacting the throughput of the training job by limiting the available computational resources.
- ✗
The GPU is experiencing a PCIe bus error, forcing the system to reduce clock speeds to maintain stability.
Why it's wrong here
PCIe bus errors are typically logged in the kernel ring buffer or via specialized diagnostic tools, not as a power cap throttle. This message indicates a power management policy enforcement, not a hardware communication fault or an interrupt-driven slowdown originating from the system bus interface.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official NVIDIA exam blueprint
This NCP-AIO practice question is part of Courseiva's free NVIDIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NCP-AIO exam.