Google Cloud Certified MCQ 2

Question 1

A company needs to migrate a 50 TB on-premises Oracle database to Google Cloud with minimal downtime. Which approach is most appropriate?

Accepted Answer

Use Database Migration Service with continuous replication and cutover

Answer

Database Migration Service supports continuous replication for Oracle, enabling minimal-downtime migrations with a controlled cutover window.

Question 2

Your application on GKE experiences intermittent OOM kills on pods during traffic spikes. What is the most effective long-term fix?

Accepted Answer

Set appropriate resource requests and limits on pods and enable Vertical Pod Autoscaler

Answer

Setting resource requests/limits allows the scheduler to place pods correctly, and VPA adjusts them automatically based on observed usage.

Question 3

A retail company wants real-time inventory updates visible globally with strong consistency. Which Cloud Spanner feature addresses this requirement?

Accepted Answer

Multi-region instance with TrueTime-based external consistency

Answer

Cloud Spanner multi-region instances use TrueTime to provide external consistency (linearizability) across all regions simultaneously.

Question 4

Which IAM approach best follows the principle of least privilege for a Cloud Run service that only needs to read from one Cloud Storage bucket?

Accepted Answer

Create a custom role with storage.objects.get and storage.objects.list on that specific bucket

Answer

A custom role scoped to only the needed permissions on the specific bucket minimizes the blast radius of any credential compromise.

Question 5

A startup needs an event-driven architecture where multiple downstream services react to new user registrations. What is the recommended pattern on Google Cloud?

Accepted Answer

Publish to Pub/Sub topic with each service having its own subscription

Answer

Pub/Sub fan-out with per-service subscriptions decouples producers from consumers and guarantees at-least-once delivery to each subscriber independently.

Google Cloud Certified - Professional Cloud Architect Practice Test

Google Cloud Certified - Professional Cloud Architect Practice Test

Google Cloud Certified MCQ 2