Ann, a user, has created a new directory and noticed that permissions on the new directory are as follows:
drwx------. 1 ann ann 0 Jun 11 08:20 work
Which of the following should the administrator do to restore default permissions for newly created directories?

A Linux user needs to create a file named newfile in the home directory that mirrors the contents of the / etc/resolv.conf file.
Which of the following commands would accomplish this task?

Joe, a user, reports there is data missing after a reboot of the system he is using. The data he was working on was located in /opt/data/user1. A Linux administrator runs the following commands and receives the resulting output.

Which of the following should the administrator perform to resolve the issue?

Due to security policies, a restriction was implemented that forbids direct access to the database server. The junior administrator needs to connect using SSH tunneling. Which of the following commands allows the junior administrator to connect from a desktop?

A systems administrator has received reports of intermittent network connectivity to a particular website. Which of the following is the BEST command to use to characterize the location and type of failure over the course of several minutes?