How many profiles can load in a single list view with Enhanced Profile Management enabled?

Why are Sharing Rules used?

Page layouts are assigned to users based on Select the correct choice

If single sign-on is enabled for your organization, API and desktop client users cannot log in to Salesforce CRM unless their IP address is included on your organization's list of trusted IP addresses or on their profile, if their profile has IP address restrictions set.

A Lookup Field Relationship Select the correct choice