A new IO card has been added to the security server to log the opening and closing of the main entrance. A switch is attached, so the interface card returns a 1 when the door is opened and a 0 when the door is closed.
Which of the following describes the Linux device to which this switch is attached?

After running an Nmap scan on a local area network, a penetration tester notices several older Linux servers have port 23 open Which of the following should the systems administrator do as a secunty best practice?

A Linux administrator needs to switch from text mode to GUI.
Which of the following runlevels will start the GUI by default?

An administrator is setting UP a NAT gateway. Two interfaces have been configured:

The firewall configuration has been completed:

The IP forwarding configuration parameter is:

When testing the NAT from a workstation, the administrator encounters an issue:

Which of the following is the MOST likely cause of the packet loss?

Two specific users need access to a directory owned by root where backups are located. Which of the following commands would BEST ensure the specified users can access the backup files?