A systems administrator needs to append output of ls -lha /opt command to the contents of a test.txt file. Which of the following commands will accomplish this?

A Linux administrator implemented a new HTTP server using the default configuration. None of the users on the network can access the server. If there is no problem on the network or with the users' workstations, which of the following steps will BEST analyze and resolve the issue?

A systems administrator is troubleshooting an intermittent network connection at the IP address 192.168.1.23.
The administrator wishes to monitor the connection at five-minute intervals for one hour. Which of the following commands will accomplish this task?

An administrator notices a directory on a web server named /var/www/html/old_reports that should no
longer be accessible on the web. Which of the following commands will accomplish this task?

A Linux administrator needs every new file created on a directory to maintain the group permissions of the same directory. Which of the following commands would satisfy this requirement?