A technician needs to configure a server to allow the OS to manipulate processor frequencies for higher power efficiency. Which setting can they enable to achieve this?

Question

Options

• ALogical Processing
• BPerformance per Watt (DAPC)
• CAdjacent Cache Line Prefetch
• DPerformance per Watt (OS)

• A
  5% (1)
• B
  5% (1)
• D
  90% (18)

Explanation

Performance per Watt (OS) is correct because it specifically delegates CPU P-state (frequency/voltage) control to the operating system, enabling the OS to dynamically scale processor speeds up or down based on workload - which is exactly "OS manipulation of processor frequencies" for power efficiency.

Option B (Performance per Watt - DAPC) is wrong because DAPC (Dell Active Power Controller) keeps frequency management in the firmware/hardware layer, not the OS. Both options sound similar, but the key distinction is who controls the scaling.

Option A (Logical Processing) is wrong because it refers to enabling hyperthreading/SMT, which creates additional logical CPU cores - unrelated to frequency scaling or power management.

Option C (Adjacent Cache Line Prefetch) is wrong because it's a CPU cache optimization that speculatively loads neighboring memory blocks to improve sequential access performance - again, unrelated to power efficiency or frequency control.

Memory tip: Focus on the parenthetical - (OS) literally tells you the OS is in control. If the question says the OS needs to manipulate frequencies, the answer must be the setting with OS in the name.

No community discussion yet for this question.