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Linux LX0-104 Exam 2 samples – Question 119

Instead of using specific host names or IP addresses, which string can be used in /etc/hosts.allow entries to cover any remote host no matter of its name or address?
(Specify the relevant string only without any additional options or arguments.)

Answer: ALL
Section: Security

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Linux LX0-104 Exam 2 samples – Question 117

With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled?
(Specify only the environment variable without any additional commands or values.)


Answer: DISPLAY, $DISPLAY
Section: Security

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Linux LX0-104 Exam 2 samples – Question 112

Which command, depending on its options, can display the open network connections, the routing tables, as well as network interface statistics.
(Specify ONLY the command without any path or parameters.)

Answer: netstat, /bin/netstat, ss, /usr/bin/ss
Section: Networking Fundamentals