On a baseline ServiceNow instance where the Domain Support - MSP Extension plugin is activated, several default domain types are created to support common Managed Service Provider (MSP) business structures. These predefined types are 'MSP', 'Customer', and 'Vendor'. They serve as classifications within the [domain] table to logically organize the domain hierarchy. The 'MSP' type is for the provider's own domain, 'Customer' for client domains, and 'Vendor' for third-party supplier domains, enabling tailored data and process segregation.

B. Primary: 'Primary' is not a domain type; it refers to the default domain assigned to a user in their user record, determining their domain upon login.

C. TOP: 'TOP' is the name of the root record in the domain hierarchy from which all other domains extend. It is not a classification or a 'type' of domain.

1. ServiceNow Product Documentation - Domain separation setup: In the section "Default domain types," it is stated: "The Domain Support - MSP extension plugin creates the following domain types by default: Customer, MSP, Vendor." This directly confirms the correct answers. (ServiceNow Product Documentation, Utah release, "Domain separation setup").

2. ServiceNow Product Documentation - Domain separation for Managed Service Providers (MSPs): This document explains the intended use of these types: "Classify domains as either MSP, Customer, or Vendor domains to logically separate them. For example, you can create business rules that apply only to domains classified as Customer domains." (ServiceNow Product Documentation, Utah release, "Domain separation for Managed Service Providers (MSPs)").