When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this? A. debug B. lsof C. nessus D. strace E. tracero...

Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes? A. core B. edquota C. ulimit D. quota

Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services? A. tcpd B. inetd C. fingerd D. mountd E. xinet...

Which configuration file would be edited to change the default options for outbound SSH sessions? A. /etc/ssh/sshd_config B. /etc/ssh/ssh C. /etc/ssh/client D. /etc/ssh/ssh_config E. /etc/ssh/ssh_cli...

The presence of what file will temporarily prevent all users except root from logging into the system? (Specify the full name of the file, including path.)

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 a...

What argument to the -type option of find will match files that are symbolic links? (Specify only the argument and no other options or words.)

In an xinetd configuration file, which attribute specifies the network address that will be used to provide the service?

Which keyword must be listed in the hosts option of the Name Service Switch configuration file in order to make host lookups consult the /etc/hosts file?

On a regular users workstation the route command takes a long time before printing out the routing table. Which of the following errors does that indicate? A. The local routing information may be cor...