SAC System Maintenance and Troubleshooting 2

Question 1

A server's RAID 5 array shows a degraded status after one disk failed. What is the correct immediate action?

Accepted Answer

Replace the failed disk and allow the array to rebuild

Answer

In a degraded RAID 5 array, you should replace the failed disk as soon as possible and allow the controller to rebuild the array to restore redundancy.

Question 2

Which log file on a Linux system should you check first when diagnosing kernel-level hardware errors?

Accepted Answer

/var/log/dmesg

Answer

The /var/log/dmesg file contains kernel ring buffer messages including hardware detection and driver errors.

Question 3

A Windows system experiences a BSOD with error 'IRQL_NOT_LESS_OR_EQUAL'. What does this typically indicate?

Accepted Answer

A driver accessing memory at an incorrect interrupt request level

Answer

IRQL_NOT_LESS_OR_EQUAL typically indicates a kernel-mode driver tried to access pageable memory at an interrupt request level that was too high.

Question 4

What is the purpose of running 'fsck' on a Linux filesystem?

Accepted Answer

To check and repair filesystem inconsistencies

Answer

fsck (filesystem check) scans a Linux filesystem for errors and inconsistencies, optionally repairing them.

Question 5

A server's CPU utilization is consistently at 100%. Which command on Linux best helps identify the top consuming processes?

Accepted Answer

top or htop

Answer

The 'top' or 'htop' commands display real-time CPU and memory usage per process, making them ideal for identifying runaway processes.

(SAC) System Administration Certification Practice Test

(SAC) System Administration Certification Practice Test

SAC System Maintenance and Troubleshooting 2