A junior systems administrator needs to make a packet capture file that will only capture HTTP protocol data to a file called test.pcap.
Which of the following commands would allow the administrator to accomplish this task?

Ann, a junior systems administrator, is required to add a line to the /etc/yum.conf file. However, she receives the following error message when she tries to add the line:

Ann performs some diagnostics to attempt to find the root cause:

Which of the following commands should Ann execute to write content to /etc/yum?

During the final step of staging new Linux hardware, GRUB2 is installed to the system drive. Which of the following BEST describes the role of GRUB2 in a new Linux installation?

A Linux administrator needs to prevent the Postfix mail transfer agent from starting on boot.
Which of the following commands will accomplish this task?

A junior systems administrator created a new filesystem /dev/sda1 with mountpoint /data and added it to the
/etc/fstab for auto-mounting.
When the systems administrator tries to mount the file system, the system refuses. Given the output below:

Which of the following steps is necessary?