An engineer is using REST API calls to configure the cisco APIC. Which data structure must be used within a post message to receive a login token?
Correct Answer: A
The correct data structure to use within a POST message to receive a login token when configuring the Cisco APIC via REST API calls is an XML payload that includes the <aaaUser> tags with nested <name> and <pwd> tags for the username and password. This structure is shown in Option A, which is the standard format for authentication requests to the Cisco APIC.
References := For more detailed information, please refer to the Cisco APIC REST API Configuration Guide, which provides comprehensive instructions on using REST API for system configuration, including authentication and token retrieval processes.