ACSP Apps and Processes 4

Question 1

A user reports that an app is consuming excessive CPU even when not in use. Which macOS tool best identifies which specific process threads are responsible?

Accepted Answer

Instruments with the Time Profiler template

Answer

Instruments with the Time Profiler template provides detailed thread-level CPU sampling to pinpoint exactly which code paths are consuming resources.

Question 2

When macOS kills a background app to reclaim memory for a foreground app, what term describes this action?

Accepted Answer

Jetsam termination

Answer

Jetsam is the macOS/iOS memory management subsystem that terminates background processes when memory pressure requires it.

Question 3

A user wants to prevent a specific app from launching at login without deleting it. Where is the most appropriate place to manage this in macOS Ventura and later?

Accepted Answer

System Settings > General > Login Items & Extensions

Answer

In macOS Ventura and later, Login Items & Extensions in System Settings is the unified location to enable or disable apps and background items that launch at login.

Question 4

Which file extension identifies a macOS Launch Agent or Launch Daemon configuration file?

Accepted Answer

.plist

Answer

Launch Agents and Launch Daemons are configured using property list (.plist) files stored in LaunchAgents or LaunchDaemons directories.

Question 5

An ACSP technician needs to unload a Launch Daemon without rebooting. Which command achieves this?

Accepted Answer

sudo launchctl bootout system /Library/LaunchDaemons/<plist>

Answer

The `launchctl bootout` command removes a Launch Daemon from the launchd bootstrap context without requiring a restart.

ACSP - Apple Certified Support Professional Practice Test

ACSP - Apple Certified Support Professional Practice Test

ACSP Apps and Processes 4