An administrator needs to change the IP address on a server remotely. After updating the configuration files, a network restart is needed. However, the administrator fears that when the network connection drops, the network restart script will be killed before the new IP address has been set.
Which of the following commands would prevent the script from being killed?

An administrator needs to run the rescript. sh script stored on the /nr.t/disk Wesystem. but permission is denied;

The system options are:

The script properties are:

Which of the following will resolve the issue?

A Linux user needs to connect to a remote email server named mail.foo.com through the SMTP port.
Which of the following commands will accomplish this task?

A Linux administrator is testing connectivity to a remote host on a shared terminal. The administrator wants to allow other users to access the terminal while the command is executing.
Which of the following commands should the administrator use?

A user wants to configure the application "myapp" to start on runlevels 2, 3, 4, and 5 every time the system starts.
Which of the following commands will accomplish this task?