Joe, a network technician, is tasked with installing a router and firewall to get an office working with internet access. Which of the following features MUST be configured to allow sharing of a single public IP address?

The predefined ____ procedure will terminate the program and close the window.

A. Off B. Sleep C. Exit D. Close

What is a shell? What is its purpose? What is a login shell? How can you determine the name of your login shell? Give command(s) that you can use for this purpose. Give names of three LINUX shells. Which are the most popular? Which shell do you normally use? Why?

What will be an ideal response?