Operate running systems

A system administrator needs to ensure that a specific process continues to run even if it crashes. The process is started by a systemd service unit. Which approach ensures the process is automatically restarted by systemd, with a delay of 30 seconds after each crash, and does not count restarts towards the failure limit?

Which TWO statements about systemd journal and rsyslog are correct?

Refer to the exhibit. A security analyst reviews the journal output for sshd.service. Which of the following best describes the observed pattern of events?

Arrange the steps to configure a static IPv4 route in Red Hat Enterprise Linux.

Order the steps to configure a new user 'jdoe' with UID 2000, home directory /home/jdoe, and secondary group 'staff'.

Match each file system type to its description.

Match each user/group management command to its function.

A critical service must restart automatically after a crash. Which systemd directive should be added to the [Service] section of the service unit file?

Which command checks if a specific systemd service is currently running?

An ext4 filesystem on a logical volume has been extended with lvextend, but df -h still shows the old size. Which command must be run to make the filesystem aware of the new size?

A security policy requires user passwords to expire 60 days after last change. Which command sets this for user 'jdoe'?

Which systemctl command configures a service to start automatically at boot without starting it now?

After a system crash, an administrator needs to review logs from the previous boot. Which command shows only logs from the boot before the current one?

An administrator needs to combine two physical network interfaces into a single logical interface for redundancy. Which RHEL tool is recommended to configure this in RHEL 8/9?

To mount an ext4 filesystem with the noatime option and remount read-only on errors, which file should be edited?

After restoring files from backup, an SELinux context of a directory is not correct. Which command will restore the file contexts to the system defaults?

Which two commands can be used to view systemd journal entries for the sshd service?

Which three network configuration methods are valid in RHEL 8/9?

Which three commands can be used to display overall memory usage information?

Refer to the exhibit. What is the most likely cause of this failure?

Refer to the exhibit. Which command would free up the most space immediately?

Refer to the exhibit. The web server fails to start. What is the most likely cause?

A system administrator receives reports that a web server service (httpd) fails to start after a reboot. The administrator checks the service status and sees it is disabled. Which of the following is the most appropriate command to ensure the service starts automatically on future reboots?

Based on the exhibit, what is the most likely cause of the failure?

Which TWO commands can be used to view recent systemd journal logs for the current boot?

A server running Red Hat Enterprise Linux 9 experiences high system load (load average 15 on a 4-core system) and slow response times. The administrator runs 'top' and sees that the 'kworker' processes are consuming significant CPU time. Further investigation reveals that the system is performing heavy I/O operations on the root filesystem, which is formatted as XFS. The administrator wants to reduce the impact of filesystem maintenance tasks on system performance. Which of the following actions should the administrator take?

A junior administrator configured a new network interface (ens224) with a static IP address using a configuration file in /etc/sysconfig/network-scripts/ifcfg-ens224. After restarting the network service, the interface comes up but does not get the IP address. The administrator runs 'ip addr show ens224' and sees no IP address assigned. The interface is listed as DOWN. The administrator then runs 'ifup ens224' manually, which succeeds, and the IP address appears. What is the most likely cause?

A system administrator needs to ensure a service called 'myapp' starts automatically at boot and also start it immediately without affecting the current boot configuration. Which TWO commands should be used?

Refer to the exhibit. What is the most likely cause of the httpd service failure?

A system administrator is troubleshooting a custom service called 'database.service' that fails intermittently. The service is a proprietary database that requires large amounts of memory. The administrator runs systemctl status database and sees 'Active: failed (Result: core-dump)' and the journal shows 'Out of memory: Killed process (database) total-vm:...' The server has 8GB RAM and 2 CPU cores. The service unit file does not contain any memory limits. The application is configured to use up to 4GB. The administrator suspects the systemd service is being killed by the OOM killer. Which action should the administrator take to prevent this issue?