You need to define Service Level Objectives (SLOs) for a high-traffic multi-region web application. Customers expect the application to always be available and have fast response times. Customers are currently happy with the application performance and availability. Based on current measurement, you observe that the 90th percentile of latency is 120ms and the 95th percentile of latency is 275ms over a 28-day window. What latency SLO would you recommend to the team to publish?

1. A. 90th percentile – 100ms 95th percentile – 250ms
2. B. 90th percentile – 120ms 95th percentile – 275ms
3. C. 90th percentile – 150ms 95th percentile – 300ms
4. D. 90th percentile – 250ms 95th percentile – 400ms

Correct Answer: C
https://sre.google/sre-book/service-level-objectives/

Some of your production services are running in Google Kubernetes Engine (GKE) in the eu-west-1 region. Your build system runs in the us-west-1 region. You want to push the container images from your build system to a scalable registry to maximize the bandwidth for transferring the images to the cluster. What should you do?

1. A. Push the images to Google Container Registry (GCR) using the gcr.io hostname.
2. B. Push the images to Google Container Registry (GCR) using the us.gcr.io hostname.
3. C. Push the images to Google Container Registry (GCR) using the eu.gcr.io hostname.
4. D. Push the images to a private image registry running on a Compute Engine instance in the eu-west-1 region.

Correct Answer: C
Hostname Storage location gcr.io Stores images in data centers in the United States asia.gcr.io Stores images in data centers in Asia eu.gcr.io Stores images in data centers within member states of the European Union us.gcr.io Stores images in data centers in the United States

Your organization recently adopted a container-based workflow for application development. Your team develops numerous applications that are deployed continuously through an automated build pipeline to a Kubernetes cluster in the production environment. The security auditor is concerned that developers or operators could circumvent automated testing and push code changes to production without approval. What should you do to enforce approvals?

1. A. Configure the build system with protected branches that require pull request approval.
2. B. Use an Admission Controller to verify that incoming requests originate from approved sources.
3. C. Leverage Kubernetes Role-Based Access Control (RBAC) to restrict access to only approved users.
4. D. Enable binary authorization inside the Kubernetes cluster and configure the build pipeline as an attestor.

Correct Answer: D
The keywords here is "developers or operators". Option A the operators could push images to production without approval (operators could touch the cluster directly and the cluster cannot do any action against them). Rest same as francisco_guerra.

You use Cloud Build to build your application. You want to reduce the build time while minimizing cost and development effort. What should you do?

1. A. Use Cloud Storage to cache intermediate artifacts.
2. B. Run multiple Jenkins agents to parallelize the build.
3. C. Use multiple smaller build steps to minimize execution time.
4. D. Use larger Cloud Build virtual machines (VMs) by using the machine-type option.

Correct Answer: C
https://cloud.google.com/storage/docs/best-practices
https://cloud.google.com/build/docs/speeding-up-builds#caching_directories_with_google_cloud_storage Caching directories with Google Cloud Storage To increase the speed of a build, reuse the results from a
previous build. You can copy the results of a previous build to a Google Cloud Storage bucket, use the results for faster calculation, and then copy the new results back to the bucket. Use this method when your build takes a long time and produces a small number of files that does not take time to copy to and from Google Cloud Storage.
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