Impact of Push Model for Network Monitoring Devices
What is the impact of the push model for monitoring devices on the network?
Community Insight
This question tests the difference between push and pull monitoring models, where the common trap is confusing proactive event-driven updates with reactive periodic polling.
The push model in network monitoring sends data proactively when changes occur, contrasting with the pull model's periodic polling. This question establishes that the primary impact is triggering notifications upon data utilization changes.
Option C is the most common wrong answer because it describes the traditional pull/polling method, which learners often confuse with modern telemetry push mechanisms.
Community Discussion (2 comments)
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Expert Analysis
Why the Answer Is Correct
The push model involves devices or agents sending data to a collector automatically when specific conditions are met, such as a change in resource utilization. Option D accurately describes this behavior as "trigger notifications for data change utilization," which aligns with how model-driven telemetry (MDT) and streaming telemetry operate by pushing updates rather than waiting for requests.Why the Other Options Are Wrong
Option C describes the traditional pull model, where the management system periodically polls devices for status, which is the opposite of a push model. Option A is incorrect because push models typically offer better scalability for real-time data compared to heavy polling loads. Option B describes an outcome (real-time access) but not the mechanism; while push enables real-time access, the defining characteristic of the push model itself is the notification trigger on change, not just the availability of the data.Community Comment Notes
The community consensus strongly supports Option D. As drinu89 noted, "This describes a push model: the device sends updates/notifications when data changes or according to a subscription, rather than waiting to be polled." Another user agreed, reinforcing that the key distinction is the proactive nature of the update delivery.Exam Strategy
When studying network monitoring, always distinguish between 'pull' (polling) and 'push' (streaming/subscriptions). Remember that push models reduce latency and network overhead by only sending data when necessary, whereas pull models can create bottlenecks during frequent polling intervals.
Frequently Asked Questions
Why is Option C incorrect for push model?
Option C describes periodic polling, which is the definition of a pull model. In a push model, the device initiates the data transfer, not the manager.
Does push model affect network scale?
While Option A suggests limited scale, push models can actually improve scalability by reducing constant query traffic, though high-frequency pushes need careful design.
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