Question: You notice that a Linux server's performance has significantly degraded. How would you diagnose and resolve this issue? Answer- top, htop, iostat, vmstat, free, sar, dmesg, Question: The / partition on your server is running out of space. What steps would you take to identify and free up disk space? Answer: df, du, ls, and find | du -sh *| sort -rh | head Question: You need to deploy a new version of a web application on a Linux server. What steps would you follow to ensure a smooth deployment with minimal downtime? Answer: You need to discuss different deployment strategies like- Blue Green, Rolling Updates, Backup Plan, Containers etc. Question: Users are experiencing connectivity issues with a server. How would you troubleshoot and resolve network problems on a Linux server? Answer: ping, traceroute, netstat, ss, ifconfig or ip, tcpdump, network interfaces, routing tables, and firewall settings Question: The file system on one of your Linux servers has become corrupted. What steps would you take to recover from this situation? Answer: fsck, examining dmesg logs for file system errors, and restoring from backups Question: A critical service on your server has stopped unexpectedly. How would you approach diagnosing and resolving the issue? Answer: systemctl or service commands, check logs under /var/log or custom location Question: Our organization requires regular backups of important data with an automated recovery process. How would you set this up on a Linux server? Answer: rsync, tar, cron, and other backup utilities Question: You must ensure that your Linux servers are up-to-date with the latest security patches. What is your approach to managing updates and patches? Answer: yum, apt, dnf, and details of these command Question: You are required to upgrade the kernel on a production server. What steps would you follow to ensure a successful upgrade? Answer: Explain process of Kernel Upgrades, What backup to take, discuss about grub, details of file.