- (Exam Topic 1)
In order to meet their business requirements, how should HipLocal store their application state?

1. A. Use local SSDs to store state.
2. B. Put a memcache layer in front of MySQL.
3. C. Move the state storage to Cloud Spanner.
4. D. Replace the MySQL instance with Cloud SQL.

Correct Answer: B

- (Exam Topic 2)
You are developing an application that will allow users to read and post comments on news articles. You want to configure your application to store and display user-submitted comments using Firestore. How should you design the schema to support an unknown number of comments and articles?

1. A. Store each comment in a subcollection of the article.
2. B. Add each comment to an array property on the article.
3. C. Store each comment in a document, and add the comment’s key to an array property on the article.
4. D. Store each comment in a document, and add the comment’s key to an array property on the user profile.

Correct Answer: D

- (Exam Topic 1)
In order for HipLocal to store application state and meet their stated business requirements, which database service should they migrate to?

1. A. Cloud Spanner
2. B. Cloud Datastore
3. C. Cloud Memorystore as a cache
4. D. Separate Cloud SQL clusters for each region

Correct Answer: D

- (Exam Topic 2)
Your organization has recently begun an initiative to replatform their legacy applications onto Google Kubernetes Engine. You need to decompose a monolithic application into microservices. Multiple instances have read and write access to a configuration file, which is stored on a shared file system. You want to minimize the effort required to manage this transition, and you want to avoid rewriting the application code. What should you do?

1. A. Create a new Cloud Storage bucket, and mount it via FUSE in the container.
2. B. Create a new persistent disk, and mount the volume as a shared PersistentVolume.
3. C. Create a new Filestore instance, and mount the volume as an NFS PersistentVolume.
4. D. Create a new ConfigMap and volumeMount to store the contents of the configuration file.

Correct Answer: D
https://cloud.google.com/kubernetes-engine/docs/concepts/configmap
ConfigMaps bind non-sensitive configuration artifacts such as configuration files, command-line arguments, and environment variables to your Pod containers and system components at runtime.
A ConfigMap separates your configurations from your Pod and components, which helps keep your workloads portable. This makes their configurations easier to change and manage, and prevents hardcoding configuration data to Pod specifications.

- (Exam Topic 2)
You recently joined a new team that has a Cloud Spanner database instance running in production. Your manager has asked you to optimize the Spanner instance to reduce cost while maintaining high reliability and availability of the database. What should you do?

1. A. Use Cloud Logging to check for error logs, and reduce Spanner processing units by small increments until you find the minimum capacity required.
2. B. Use Cloud Trace to monitor the requests per sec of incoming requests to Spanner, and reduce Spanner processing units by small increments until you find the minimum capacity required.
3. C. Use Cloud Monitoring to monitor the CPU utilization, and reduce Spanner processing units by small increments until you find the minimum capacity required.
4. D. Use Snapshot Debugger to check for application errors, and reduce Spanner processing units by small increments until you find the minimum capacity required.

Correct Answer: C
https://cloud.google.com/spanner/docs/compute-capacity#increasing_and_decreasing_compute_capacity