What is Network Time Protocol (NTP)? 

FIrst off, network Time Protocol (NTP) is a protocol used to synchronize computer clock times in a network.

Why is it important to synchronize computer clock times?

It is important to synchronize computer clock times via the network time protocol (NTP) on server clocks across your network as this  helps t prevent data loss and eliminate SSL problems .

If wondered if you can shorten the command you use when you ssh to the same machine all the time.

Well, you can pre-configure these settings in a configuration file and have it reference that when you are SSHing into a machine.

That way you can just SSH using this shorter command: $ ssh master

Instead of the long command: $ ssh username@ipaddressofmachine -i location/of/ssh/key/file

Here's how you do it.