[Solved] Consider this simplified code snippet representing a low-power mode trigger in an ARM system:if (cpu_idle) { enter_sleep_mode(); }What is the main benefit of entering sleep mode in this context? | ARM Architecture

ARM Architecture - Power Modes

Consider this simplified code snippet representing a low-power mode trigger in an ARM system:

if (cpu_idle) {
  enter_sleep_mode();
}

What is the main benefit of entering sleep mode in this context?

AReduce power consumption by stopping most CPU activity

BIncrease CPU clock speed

CDisable all device functions permanently

DBoost voltage to improve performance

Step-by-Step Solution

Solution:

Step 1: Understand what sleep mode does
Sleep mode reduces power by stopping most CPU activity while keeping the system ready to wake up.
Step 2: Analyze the code effect
The code triggers sleep mode when CPU is idle, so it saves power by reducing activity, not increasing speed or voltage.
Final Answer:
Reduce power consumption by stopping most CPU activity -> Option A
Quick Check:
Sleep mode = Power saving by stopping CPU activity [OK]

Quick Trick: Sleep mode saves power by pausing CPU activity [OK]

Common Mistakes:

Master "Power Modes" in ARM Architecture

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Consider this simplified code snippet representing a low-power mode trigger in an ARM system: