Bird
0
0

A device is stuck in high power mode and the battery drains quickly. Which change would fix this problem?

medium📝 Analysis Q14 of 15
ARM Architecture - Power Modes
A device is stuck in high power mode and the battery drains quickly. Which change would fix this problem?
ASwitch the device to low power mode to reduce energy use
BIncrease screen brightness to save battery
CDisable all apps permanently
DKeep the device plugged in at all times
Step-by-Step Solution
Solution:

  1. Step 1: Identify problem cause

    High power mode uses more energy, draining battery fast.

  2. Step 2: Find solution to reduce energy use

    Switching to low power mode lowers energy use and saves battery.

  3. Final Answer:

    Switch the device to low power mode to reduce energy use -> Option A

  4. Quick Check:

    Fix battery drain = use low power mode [OK]
Quick Trick: Use low power mode to fix fast battery drain [OK]
Common Mistakes:
  • Increasing brightness wastes battery
  • Disabling all apps permanently is impractical
  • Keeping plugged in doesn't fix power mode issue

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More ARM Architecture Quizzes
Bus Architecture - Bus matrix for multi-master access - Quiz 14medium Control Flow Instructions - Conditional branch with flags - Quiz 15hard Control Flow Instructions - Compare and branch patterns - Quiz 7medium Exception and Interrupt Model - Exception entry and exit sequence - Quiz 2easy Exception and Interrupt Model - Exception types in Cortex-M - Quiz 3easy Exception and Interrupt Model - Exception priority levels - Quiz 9hard Exception and Interrupt Model - NVIC (Nested Vectored Interrupt Controller) - Quiz 4medium Exception and Interrupt Model - PendSV and SysTick exceptions - Quiz 10hard Power Modes - Sleep mode (WFI instruction) - Quiz 10hard Power Modes - Low-power design strategies - Quiz 1easy