SAC System Maintenance and Troubleshooting 1 — Questions and Answers
Question 1: Which command in Windows is used to check and repair disk errors?
- sfc
- scanreg
- defrag
- chkdsk (Correct answer)
Correct answer: chkdsk
`chkdsk` (Check Disk) is a Windows command-line utility used to verify the file system integrity of a volume and fix logical file system errors. It can also scan for and recover bad sectors on the hard drive. This helps prevent data loss and ensures the stability of the storage system.
Question 2: What is the purpose of system logs in troubleshooting?
- Boost network speed
- Monitor user emails
- Diagnose system problems (Correct answer)
- Update hardware drivers
Correct answer: Diagnose system problems
System logs record events, errors, warnings, and other operational information generated by the operating system and applications. By reviewing these logs, system administrators can identify patterns, pinpoint the root cause of system problems, and troubleshoot issues effectively. They are an invaluable resource for diagnostics and maintaining system health.
Question 3: Which tool is commonly used in Linux to monitor real-time system processes?
- ls
- df
- top (Correct answer)
- grep
Correct answer: top
The `top` command in Linux provides a dynamic, real-time view of running processes. It displays information such as CPU usage, memory usage, swap usage, and the processes consuming the most resources. This allows administrators to monitor system performance and identify resource-intensive applications or processes instantly.
Question 4: What should a technician do first when a computer fails to boot?
- Reinstall the OS
- Replace the motherboard
- Check power and cables (Correct answer)
- Run antivirus software
Correct answer: Check power and cables
When a computer fails to boot, the first troubleshooting step should always be to check the most basic physical connections. Ensuring that the power supply is connected and functioning, and that all internal and external cables are securely seated, can often resolve simple boot issues. This eliminates common hardware problems before proceeding to more complex diagnostics.
Question 5: Which Windows feature restores system files to an earlier point in time?
- Disk Cleanup
- System Restore (Correct answer)
- Task Scheduler
- File History
Correct answer: System Restore
System Restore is a Windows feature that allows users to revert their computer's system files, installed applications, Windows Registry, and system settings to an earlier point in time, called a restore point. This is particularly useful for recovering from system instability, driver issues, or problematic software installations without affecting personal files.
Question 6: What is the main purpose of a maintenance schedule in system administration?
- To speed up installations
- To reduce software licensing
- To avoid maintenance tasks
- To prevent system failures and optimize performance (Correct answer)
Correct answer: To prevent system failures and optimize performance
A maintenance schedule in system administration involves planning regular tasks such as updates, backups, disk cleanups, and security scans. This proactive approach helps to prevent unexpected system failures, address potential vulnerabilities, and ensure that systems operate at optimal performance levels. Ultimately, it extends system lifespan and reliability.
SAC System Maintenance and Troubleshooting 1
Which command in Windows is used to check and repair disk errors?