01. Which /etc/fstab mount option ensures a network file system such as NFS is mounted only after the network is available?
a) nfs
b) none
c) _netdev
d) _netfs
02. You want to remove the physical volume /dev/sdd2 from the volume group vgdata. Which statement about the removal procedure is not true?
a) You need the amount of used extents on /dev/sdd2 to be available on remaining devices.
b) The file system must support shrinking.
c) Use pvmove to move used extents.
d) Before you can use vgreduce, you have to move used extents to the remaining volumes.
03. On RHEL, which method fully places SELinux in disabled mode, not merely permissive?
a) Remove the SELinux packages with dnf remove selinux.
b) From a root shell, run setenforce 0.
c) Add the kernel boot argument selinux=0 in GRUB.
d) Set selinux=disabled in /etc/sysconfig/selinux.
04. What is the easiest way to copy the current runtime firewall configuration into the permanent configuration?
a) Write all options to the runtime configuration, and then use firewall-cmd --runtime-to-permanent to add these options to the persistent configuration.
b) When using firewall-cmd, add the --permanent option to all commands.
c) Manually edit the firewalld zone file.
d) Only write the permanent configuration, and use systemctl restart firewalld to activate the permanent configuration in the runtime as well.
05. You want to search the audit log for SELinux-related messages with grep. Which string should you search for?
a) deny
b) selinux
c) violation
d) AVC
06. While setting a port context with semanage port -a -t ssh_port_t -p tcp 443, you get an error stating that the port is already defined. Which of the following statements is true?
a) You have already issued the command earlier.
b) You need to use -m to modify the port context, not -a to add it.
c) You cannot change a default port setting like 443, as it is used already for https.
d) The syntax you use is incorrect.
07. You extended a logical volume but did not grow the XFS filesystem it holds, so the extra space is not usable. How do you make the filesystem use it?
a) Use xfs_growfs to grow the filesystem to the size available in the logical volume.
b) Run lvresize again with the -r option; it will resize just the filesystem.
c) Bring the logical volume back to its original size and then use lvresize -r again.
d) Use fsresize to resize the filesystem later.
08. After resetting the root password from an environment started with the init=/bin/bash kernel boot argument, how do you restart the system so that it boots normally?
a) exit
b) exec /usr/lib/systemd/systemd
c) reboot
d) systemctl isolate multi-user.target
09. What is the name of the systemd service that provides NFS shares on RHEL?
a) nfs-kernel-server.service
b) nfs.service
c) netmount.service
d) nfs-server.service
10. Several elements are required when you create a systemd mount unit file. Which of the following is not one of them?
a) An [Install] section is included to set the default runlevel.
b) A Where statement is included to indicate where the device should be mounted.
c) The mount unit filename corresponds to the mount point.
d) A What statement is included to indicate what should be mounted.
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