CompTIA Operating Systems 3 — Questions and Answers
Question 1: Which macOS utility provides a graphical view of running processes and system resource usage similar to Windows Task Manager?
- Terminal
- Activity Monitor (Correct answer)
- Console
- Disk Utility
Correct answer: Activity Monitor
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?
- Reinstall Windows from scratch
- Boot from installation media and use Startup Repair (Correct answer)
- Replace the hard drive
- Run chkdsk from within Windows
Correct answer: Boot from installation media and use Startup Repair
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?
- sfc /scannow
- chkdsk /f (Correct answer)
- diskpart
- format /q
Correct answer: chkdsk /f
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?
- chmod 755 filename
- chmod 644 filename (Correct answer)
- chmod 600 filename
- chmod 777 filename
Correct answer: chmod 644 filename
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?
- A log file that records application errors
- A hierarchical database that stores OS and application configuration settings (Correct answer)
- A backup of system files
- A list of installed Windows updates
Correct answer: A hierarchical database that stores OS and application configuration settings
The Windows Registry is a hierarchical database that stores configuration settings for the operating system, hardware, and installed applications.
Question 6: A technician wants to schedule a script to run automatically every night on a Windows machine. Which tool should be used?
- Services.msc
- Task Scheduler (Correct answer)
- Group Policy Editor
- Event Viewer
Correct answer: Task Scheduler
Task Scheduler allows administrators to create tasks that execute programs or scripts at specified times or in response to system events.
Question 7: Which type of hypervisor runs directly on the physical hardware without a host operating system?
- Type 2 hypervisor
- Type 1 hypervisor (Correct answer)
- Hosted hypervisor
- Paravirtualization layer
Correct answer: Type 1 hypervisor
A Type 1 (bare-metal) hypervisor runs directly on hardware, offering better performance and isolation than Type 2 hypervisors that run on top of a host OS.
CompTIA Operating Systems 3
Which macOS utility provides a graphical view of running processes and system resource usage similar to Windows Task Manager?