Lesson 15—Manage System Resources

Question 1

What are the four default top-level folders that are visible in the Finder?

Answer 1

• Applications—Apps that local users can access
• Library—System resources that local users can access
• System—System resources
• Users—Local user home folders

Question 2

What are 9 common system resources? What purpose does each resource serve?

Answer 2

• Application Support
• Containers and Group Containers
• Extensions
• Fonts
• Frameworks
• Keychains
• LaunchDaemons and LaunchAgents
• Preference files
• Logs

Question 3

What are the three supported system resource domains? What purpose does each domain serve?

Answer 3

• User—Contains apps and system resources that are specific to each user account
• Local—Contains apps and system resources that are available to users on a local Mac
• System—Contains apps and system resources that provide basic system functionality

Question 4

What purpose does the ~/Library/Containers folder serve? What items are in this folder?

Answer 4

The ~/Library/Containers folder contains resources for sandboxed apps. macOS Big Sur creates and maintains a separate container folder for each sandboxed app that a user can open. A sandboxed app is more secure because it can access only items inside its container. Only items intended for sharing are in a group container folder.

Question 5

How does System Integrity Protection help ensure that macOS Big Sur system resources remain
secure?

Answer 5

System Integrity Protection prevents users and processes with administrator or root access from modifying core macOS Big Sur items. Protected items include the /System, /bin, /sbin, and /usr folders, along with core macOS Big Sur apps.

Question 6

Which app should you use to enable, disable, or validate a font or to add a font to the local font library?

Answer 6

You can use Font Book to enable, disable, or validate a font or to add a font to the local font library

Question 7

How can you identify duplicate fonts?

Answer 7

The Font Book app displays a small dot next to the name of any font that has duplicate resources.

Question 8

What purpose does the Application Support system resource serve?

Answer 8

Ancillary data that an app needs, such as help files or templates, might be in this folder.

Question 9

What purpose does the Containers and Group Containers system resource serve?

Answer 9

These folders contain resources for sandboxed apps.

Question 10

What purpose does the Extensions system resource serve?

Answer 10

Legacy system extensions, previously called kernel extensions (kexts), are found only in the /Library and /System/Library folders. Legacy system extensions are low-level drivers that attach themselves to the kernel, or core, of the operating system. Legacy system extensions provide driver support for hardware, networking, and peripherals.

Question 11

What purpose does the Fonts system resource serve?

Answer 11

Files that describe typefaces used for both screen display and printing.

Question 12

What purpose does the Frameworks system resource serve?

Answer 12

Shared code libraries that provide additional software resources for apps and system processes.

Question 13

What purpose does the Keychains system resource serve?

Answer 13

Help securely store sensitive information, including passwords, certificates, keys, Safari AutoFill information, and notes.

Question 14

What purpose does the LaunchDaemons and LaunchAgents system resource serve?

Answer 14

Processes that launchd starts. LaunchAgents start up only when a user is logged in, whereas LaunchDaemons start processes that always run in the background.

Question 15

What purpose does the Preference files system resource serve?

Answer 15

App and system configuration information.

Question 16

What purpose does the Logs system resource serve?

Answer 16

Text files that contain error and progress entries from nearly any app or system service.