A service route is the path from the interface to the service on a server. By default, the firewall uses the management interface to communicate to various servers, including DNS, Email, Palo Alto Updates, User-ID agent, Syslog, Panorama, dynamic updates, URL updates, licenses, and AutoFocus. etc. Sometimes, it is necessary to use an alternative path other than Firewall management IP due to many restrictions. To configure service routes for non-predefined services, the destination addresses can be manually entered in the Destination section under Device > Setup > Services > Service Route Configuration > Customize1. Option A is incorrect because it is used to configure static routes for network traffic, not service routes for firewall services. Option B is incorrect because it is used to configure general service settings such as NTP server and proxy server, not service routes for specific destinations. Option D is incorrect because it is used to configure service routes for predefined services such as DNS and Syslog, not service routes for non-predefined services2.