14. Interpret Sequence Diagram That Includes API Calls 200-901 Practice Questions (Page 6)

Questions 26–27

1. 26application · medium

   A sequence diagram shows an API client sending a GET /devices request. The response is a 500 Internal Server Error. The diagram then shows a self-message on the client lifeline labeled 'retry logic' followed by a second GET /devices request. What does this sequence represent?

   • AThe client sends a different request to recover from the error.
   • BThe client handles the error by retrying the request.
   • CThe error response is ignored and the client continues to the next step.
   • DThe server automatically retries the request after a failure.
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A sequence diagram for a network automation workflow includes three lifelines: 'Orchestrator', 'Cisco DNA Center', and 'Network Device'. The diagram shows a message from the Orchestrator to DNA Center labeled 'POST /intent/api/v1/network-device', then a message from DNA Center to the Network Device labeled 'apply config', and then a message from the Network Device back to DNA Center labeled 'ack'. Finally, the Orchestrator receives a '202 Accepted' response from DNA Center. The engineer needs to determine which component is the API consumer and which is the API provider. Which statement is correct?

   • AThe Orchestrator is both consumer and provider because it sends and receives messages.
   • BDNA Center is the API consumer, and the Network Device is the API provider.
   • CThe Network Device is the API consumer, and the Orchestrator is the API provider.
   • DThe Orchestrator is the API consumer, and DNA Center is the API provider.
   Reveal Solution Discussion Select an answer first