Linux Administrator L2 Interview Questions and Answers

To troubleshoot a server or application outage, I would follow a systematic approach to identify and resolve the issue.

• Check server logs for any error messages or warnings

• Verify network connectivity and firewall settings

• Check hardware components such as power supply, RAM, and hard drive

• Restart services or reboot the server if necessary

• If the issue persists, escalate to higher level support or vendor for assistance

• For production server outages, follow established incident mana...read more

Answers to Linux Administrator L2 interview questions.

• A problem ticket is a record of an issue or problem that needs to be resolved.

• To recover shadow file, use a backup or recreate it using the passwd command.

• The name of the event daemon varies depending on the Linux distribution.

• inetd is a daemon that manages incoming network connections and launches the appropriate service.

Possible reasons for all users including root unable to login.

• Incorrect permissions on login files or directories

• Corrupted or missing system files

• Network connectivity issues

• Authentication server down or misconfigured

• System compromised by a hacker or malware

LVM (Logical Volume Manager) is a disk management tool in Linux that allows for dynamic allocation and resizing of storage space.

• LVM provides a layer of abstraction between physical storage devices and the operating system.

• It allows for the creation of logical volumes that span multiple physical disks.

• Logical volumes can be resized, moved, and even striped for improved performance.

• LVM also supports features like snapshots and mirroring for data protection.

• Commands like pvcrea...read more