When configuring a Virtual Server to use an iRule with an HTTP_REQUEST event, which lists required steps in a proper order to create all necessary objects.

This order creates the iRule before the required pools exist, so the iRule references pool names that have not yet been configured, violating proper dependency order.

Creating the Virtual Server first establishes the object without requiring a pool or iRule to exist yet, which BIG-IP allows. Pools are then created so the iRule can reference them by name, the iRule is created next with valid pool references, and finally the Virtual Server is edited to attach the iRule - ensuring all dependent objects exist before association. The built-in default HTTP profile already supports HTTP_REQUEST events, so no custom profile creation is required.

This order creates the Virtual Server before the iRule but includes no final edit step to attach the iRule to the VS, leaving the Virtual Server without the iRule associated.

This option requires creating a custom HTTP profile, which is unnecessary because the built-in default HTTP profile already supports the HTTP_REQUEST event without customization.