Red Hat Interview Question

What is the difference between a process and a thread in Linux? How would you troubleshoot a Linux system that’s running slowly? Explain the process of mounting and unmounting a file system in Linux. How do you check the status of services in Linux? How would you restart a failed service? What is SELinux and how does it enhance security in Linux systems? Can you explain the purpose of the cron job scheduler, and how do you create and manage cron jobs?