Cisco Updated 300-435 Exam Questions and Answers by raees

The correct code snippet for detecting a change in OSPF neighbors and displaying an alert message is Option C. This option includes a check for ‘OSPF-neighbor-state-change’ within the ‘Correlation Engine’ data returned by the API call. If this key exists and its value is not 0, indicating a state change has occurred, it prints out an alert message “OSPF neighbor change detected!” This logic correctly implements the required functionality.

References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

 Synchronous API calls are blocking operations which means the code will not execute any further until a response is received from the server. This can add perceived latency to an application because it has to wait for the data to be received before continuing (Option C). Furthermore, synchronous calls block until a response is returned from the server (Option D), which means that during this time, no other operations can be performed. This is in contrast to asynchronous calls, which allow other processes to run while waiting for the API call to return. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )