A SLES 15 server hosts a critical database on an LVM logical volume named `lv_data` within the volume group `vg_db`. The underlying physical volume is running out of space. A new disk, `/dev/sdd`, has been added to the system. Which sequence of commands correctly adds the new disk to the volume group and extends the logical volume to use all available free space?
A system administrator is analyzing a SLES 15 system where logs are filling up the root partition. They want to view only the critical, alert, and emergency level messages from the systemd journal that have occurred since the last boot. Which command will accomplish this?
A developer has created a custom application with a systemd service unit file. The application must not start until the network is fully configured and a specific NFS share is mounted. Which directives should be added to the `[Unit]` section of the service file to ensure these dependencies are met? (Select TWO)
True or False: On a SLES 15 system using Btrfs for the root filesystem, the `snapper create` command creates a complete, block-for-block copy of the subvolume, consuming disk space equal to the original subvolume's size.
A new SLES 15 server is being provisioned for a web application. The administrator needs to schedule a cleanup script `/usr/local/bin/cleanup.sh` to run automatically. The business requirements are that the script must run 10 minutes after the system boots up, and then run again every 6 hours thereafter. Which type of systemd unit provides the most appropriate and modern method to achieve this on SLES 15?
A system administrator is managing a multi-disk Btrfs filesystem. Over time, data has become unevenly distributed across the devices. To re-stripe the data and metadata evenly across all available disks in the filesystem mounted at `/data`, which command should be used?
An administrator is hardening a SLES 15 server. They need to find all files in the `/etc` directory that have the SUID bit set, as these can pose a security risk. Which command will correctly locate only these specific files?
A financial services company needs to deploy a new SLES 15 server with a highly resilient storage backend for their transaction logs. The requirements are: data must be mirrored across two separate disks (`/dev/sdb` and `/dev/sdc`), and they need the ability to create near-instantaneous, space-efficient snapshots for backup purposes before running end-of-day reports. Which storage technology combination on SLES 15 best meets all these requirements?
A junior administrator is trying to add a new software repository from a URL to a SLES 15 system using `zypper`. They use the command `zypper addrepo new_repo`. After running `zypper refresh`, they notice packages from the new repository are not being considered during updates. What is the most likely cause of this issue?
A process named `data-crunch` is consuming 100% of a CPU core, impacting the performance of other critical services. The administrator wants to lower its priority without terminating it. The process has a PID of 25123 and a current nice value of 0. Which command will successfully decrease the process's scheduling priority, making it 'less nice' to other processes?