300-435 Question 104
Single answerA network engineer is tasked with implementing a telemetry solution to monitor the performance of a Cisco enterprise network. The engineer needs a model where the telemetry data is sent only when a change occurs, rather than at regular intervals. Which telemetry model should the engineer select?
- A
Subscription-based telemetry model
- B
Publication-based telemetry model
- C
Polling-based telemetry model
- D
SNMP-based telemetry model
Show answer and explanation
Correct answer: A
Explanation
The subscription-based telemetry model is ideal for scenarios where the system needs to send telemetry data only when specific changes occur, rather than at fixed intervals. This makes it efficient for reducing unnecessary data transmission and meeting the requirements of the given scenario.
- A. Correct.
Correct. In the subscription-based telemetry model, data is pushed from the device to the receiver based on a predefined subscription, and it can be configured to send updates only when changes occur.
- B. Incorrect.
Incorrect. The publication-based telemetry model is not a standard telemetry model. It is not used to describe push-based telemetry systems.
- C. Incorrect.
Incorrect. Polling-based telemetry involves actively querying devices for data at regular intervals, which does not align with the requirement of sending data only when a change occurs.
- D. Incorrect.
Incorrect. SNMP is a protocol for network management and monitoring, but it typically involves polling or traps rather than a subscription-based model for telemetry.