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Question 115 - Professional Cloud Database Engineer discussion

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You have an application that sends banking events to Bigtable cluster-a in us-east. You decide to add cluster-b in us-central1. Cluster-a replicates data to cluster-b. You need to ensure that Bigtable continues to accept read and write requests if one of the clusters becomes unavailable and that requests are routed automatically to the other cluster. What deployment strategy should you use?

A.
Use the default app profile with single-cluster routing.
Answers
A.
Use the default app profile with single-cluster routing.
B.
Use the default app profile with multi-cluster routing.
Answers
B.
Use the default app profile with multi-cluster routing.
C.
Create a custom app profile with multi-cluster routing.
Answers
C.
Create a custom app profile with multi-cluster routing.
D.
Create a custom app profile with single-cluster routing.
Answers
D.
Create a custom app profile with single-cluster routing.
Suggested answer: C

Explanation:

https://cloud.google.com/bigtable/docs/app-profiles#default-app-profile

The question states that a single cluster existed first, then a second cluster was added. Google's documentation states, ''if you created the instance with one cluster, the default app profile uses single-cluster routing. This ensures that adding additional clusters later does not change the behavior of your existing applications''. Simply adding a second cluster does not change the default profile from single-cluster routing to multi-cluster routing. Since you need multi-cluster routing, you're going to need a custom app profile. So C is correct. https://cloud.google.com/bigtable/docs/app-profiles#default-app-profile

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asked 18/09/2024
john lopez
27 questions
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