What is the purpose of an initramfs during the Linux system start? A. It loads required modules and starts sub systems like LVM to make the root file system accessible to the kernel B. It moves th...

On a Linux node with multiple active networks interfaces, each having a default route to the Internet, which default route is preferred? A. The default route with the highest metric value B. The d...

In which directory tree are files modified when changing kernel parameters using the command sysctl? A. /sys/kernel/ B. /proc/kernel/ C. /proc/sys/ D. /lib/sys/ E. /sys/proc/

Which of the filter keywords below could be used in the following command: tcpdump -i eth0 ____________ 203.0.113.8 (Choose three.) A. host B. ip C. src D. dst E. ipv6

What command is used to send messages to all users currently logged in? (Specify ONLY the command without any path or parameters.)

In order to gather performance data with sar over a longer period of time, which command should be run periodically from cron? A. sar B. sarmon C. sarec D. sadf E. sarcron

Which sub command to cryptsetup shows information about an encrypted LUKS partition? A. luksDump B. luksInfo C. luksDebug D. luksLS E. luksShow

What command discards unused blocks on a mounted file system in order to support SSD devices? (Specify ONLY the command without any path or parameters.)

A web application server contains 64GB of RAM and two swap partitions on normal hard disk drives, each with a size of 64 GB. Within the last month, the average number of user sessions on this server h...

Which of the following configuration files are used by tcpwrapper? A. /etc/tcpd.allow and etc/tcpd.deny B. /etc/tcpwrapper.allow and /etc/tcpwrapper.deny C. /etc/hosts.allow and /etc/hosts.deny ...