Hello Sims
The type of logging you choose depends on the detail that you want included. There are eight levels of severity:
- Emergency
- Alert
- Critical
- Error
- Warning
- Notice
- Informational
- Debug
By choosing the severity, you choose what kind of events you want to be logged regardless of whether you are using a syslog server or not. You can find out more information about these levels of severity and how to connect a syslog server at the following lesson:
The specific numbers were used simply to demonstrate how you can use the exclude keyword to exclude information from the output. There is no reason to choose those particular numbers. It was done for demonstration purposes only.
I hope this has been helpful!
Laz