Can we get SQL Server service and Agent service automatically restarted at unexpected stopped?

We know that Windows Services have an option to get them started automatically configuring the Start Mode. But this is only with Windows starting. What if when either SQL Server or SQL Server Agent stops unexpectedly, you need to get them started automatically? 

This is possible. It can be simply set with SQL Server Agent property window as below.

** Note that, for the second option which is Auto restart SQL Server Agent if it stops unexpectedly needs SQL Server Agent Service Account to be a member of local admin group of installed server. However this is not considered as a good practice, hence external monitoring tool such as System Center Operations Manager is recommended for monitoring.