CompTIA Operating Systems 3

Question 1

Which macOS utility provides a graphical view of running processes and system resource usage similar to Windows Task Manager?

Accepted Answer

Activity Monitor

Answer

Activity Monitor on macOS displays CPU, memory, energy, disk, and network usage for all running processes in real time.

Question 2

A Windows computer fails to boot and displays 'BOOTMGR is missing.' What is the best first step to resolve this?

Accepted Answer

Boot from installation media and use Startup Repair

Answer

Booting from Windows installation media and running Startup Repair can rebuild the boot manager without requiring a full reinstall.

Question 3

Which command in Windows is used to check and repair file system errors on a drive?

Accepted Answer

chkdsk /f

Answer

The 'chkdsk /f' command scans the specified drive for file system errors and fixes them; /f is required to actually repair found errors.

Question 4

In Linux, which command changes the permissions of a file so the owner can read and write, while group and others can only read?

Accepted Answer

chmod 644 filename

Answer

chmod 644 sets owner read+write (6), group read-only (4), and others read-only (4), which is the standard permission set for most files.

Question 5

What is the Windows Registry?

Accepted Answer

A hierarchical database that stores OS and application configuration settings

Answer

The Windows Registry is a hierarchical database that stores configuration settings for the operating system, hardware, and installed applications.

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