Discovery settings

In discovery schedule configuration what is the difference between:

Discover All devices and Discover Instrumented devices?

In discovery schedule configuration what is the difference between:

Name Resolution DNS and Name Resolution NetBIOS?

We don't use a DNS server in this part of our management network. All resolution is via IP but of course we have entered hostname info in that section of the DRAC so the hostnames can be seen in OME:

Register DRAC on DNS        Checked
DNS DRAC Name:                 hostname.example.com
Auto Config Domain Name: Not checked
DNS Domain Name:              hostname.example.com