A user cannot reach the internet from a workstation. A systems administrator performs diagnostics with the following results:

Which of the following is the cause for lack of internet connectivity?

• A.The network gateway is not reachable from the workstation.
• B.The incorrect network mask is set for the interface enp2so on the workstation.
• C.The workstation is not using a DNS server.
• D.The company's firewall is blocking connections from the workstation to the internet.

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Which of the following BEST describes running on a Linux system?

• A.Containers only need the namespaces functionally to run on a Linux system available since kernel 2.6.
• B.Containers need a hypervisor to run a Linux system. Cgroups namespaces are functionalities used for the kernel but not for running containers.
• C.Containers only need the cgroups functionality for running on a Linux system. Namespaces is not a Linux kernel functionality needed for creating and managing containers.
• D.Containers use the cgroups and namespaces functionalities to isolate processes and assign hardware resources to each of those isolated processes.

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An administrator needs to generate a list of services that are listening on TCP and/or UDP ports. Which of the following tools should the administrator use?

• A.ethtool
• B.route
• C.netstat
• D.portmap

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A systems administrator needs to connect to a remote Linux machine to run system updates from within a graphical interface. Which of the following should the administrator use?

• A.MATE
• B.Wayland
• C.VNC
• D.Unity

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A junior Linux administrator is setting up system-wide configuration settings. The goal is to ensure the PATH environment variable includes the following locations for all users who log into a Linux system.

The administrator issues the following commands at the terminal:

Respectively, the output of these commands is as follows:

Given this output, which of the following would be the BEST action for the administrator to perform to address this issue?

• A.Update the /etc/profile file using a text editor navigate to the PATH element, add the missing locations, and restart the bash process to update the changes.
• B.Update the /etc/profile.d file using a text editor, navigate to the PATH element add the missing locations, and run the bash_completion.sh script to update the changes.
• C.Update the /etc/profile file using a text editor, navigate to the PATH element, add the missing locations and run the . /etc/profile command to update the changes.
• D.Update the /etc/profile.d file using a text editor, navigate to the PATH element, add the missing locations, and reboot to update the changes.

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