Cisco Enterprise Network Core Technologies (ENCOR) Practice Exam

The correct choice for the verb typically used for updating existing resources is the option pertaining to "PATCH." This choice refers to a specific HTTP method designed to apply partial modifications to a resource, making it ideal for updating existing data without affecting the whole resource.

The PATCH method allows clients to send only the data that needs to be updated, which can enhance efficiency, especially when only a small portion of a resource changes. This contrasts with the PUT method, which generally requires the entire resource representation to be sent, replacing the existing resource entirely. In scenarios where only minor adjustments are necessary, PATCH becomes the more effective choice.

While POST is primarily used to create new resources, DELETE is employed to remove resources, therefore not relevant to the process of updating existing data. Hence, PATCH is recognized as the appropriate option for updating resources in the context of CRUD operations.