Q: 3
You operate a logistics company, and you want to improve event delivery reliability for vehicle-based
sensors. You operate small data centers around the world to capture these events, but leased lines
that provide connectivity from your event collection infrastructure to your event processing
infrastructure are unreliable, with unpredictable latency. You want to address this issue in the most
cost-effective way. What should you do?
Options
Discussion
B . A is a trap since Kafka adds overhead, Pub/Sub is cheaper and survives unreliable leased lines.
B tbh, only edge case where A might win is if you needed local storage due to regulatory or privacy constraints. But question just wants cost-effective and resilient delivery, so managed Pub/Sub is perfect. Anyone disagree if on-prem cache wasn't a factor?
A isn’t it, B is the call here since Pub/Sub handles the unreliable connections and scales well for cost. This comes up in the official Google practice questions and the study guide covers managed service options pretty clearly.
D
Don’t think A is right, seems like a trap since managing Kafka yourself adds overhead. I’m going with B this time, Pub/Sub just fits better for unreliable leased lines and it’s fully managed. Maybe some edge cases but I think B is safest.
A is wrong, B. Saw a similar question and Pub/Sub is just cheaper for unreliable lines.
I don't think it's A. B fits better here since Cloud Pub/Sub is designed for unreliable or lossy networks and saves you from Kafka maintenance overhead. A is tempting but adds cost and complexity you don't need for the actual requirement. Pretty sure B's the expected answer on these types of Google questions.
B , Pub/Sub is built to handle unreliable and lossy connections well, plus it’s managed so you avoid all the Kafka ops headaches. If the question was about buffering on-site or local failover, I'd maybe consider A, but for pure cost-effectiveness with flaky links B is safer. Seen this logic in a few practice sets. Disagree?
Is anyone using the official study guide or practice tests to prep for these scenario questions? I keep seeing similar cases where Pub/Sub is the recommended approach for flaky connections. Just want to confirm if the guide mentions this pattern clearly.
B , saw a similar scenario in practice sets and Pub/Sub is reliable for flaky networks plus it's cheaper compared to Interconnect.
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