PCD Quick Quiz — 10 Questions

Question 1

A company is deploying a microservices architecture on GKE. They need to expose a set of related microservices under a single external IP address with path-based routing. Which Kubernetes resource should they use?

Accepted Answer

Ingress resource. An Ingress resource is the correct choice because it provides HTTP/HTTPS layer-7 routing to expose multiple services under a single external IP address, using path-based or host-based rules. This directly meets the requirement of exposing a set of related microservices with path-based routing on GKE, whereas a Service of type LoadBalancer would create a separate external IP per service.

Answer

Service of type NodePort

Answer

NetworkPolicy

Answer

Service of type LoadBalancer

Question 2

You need to monitor the CPU usage of a Compute Engine instance and trigger an alert when it exceeds 80% for 5 minutes. Which Google Cloud service should you use?

Accepted Answer

Cloud Monitoring. Cloud Monitoring (formerly Stackdriver Monitoring) is the correct service because it provides metrics, dashboards, and alerting policies for Compute Engine instances. You can create a metric-based alert condition that triggers when the CPU utilization metric exceeds 80% for a duration of 5 minutes, using the MQL or policy builder.

Answer

Cloud Debugger

Answer

Cloud Logging

Answer

Error Reporting

Question 3

Match each Firebase feature to its description.

Question 4

Drag and drop the steps to create a Cloud Run service in the correct order.

Question 5

Drag and drop the steps to deploy a containerized application to Google Kubernetes Engine (GKE) in the correct order.

Question 6

Drag and drop the steps to set up a Cloud SQL instance with a private IP in the correct order.

Question 7

Drag and drop the steps to configure a Cloud Storage bucket with uniform bucket-level access in the correct order.

Question 8

Drag and drop the steps to set up a Cloud Function triggered by a Cloud Storage event in the correct order.

Question 9

Drag and drop the steps to grant a service account access to a Cloud Storage bucket in the correct order.

Question 10

A team is developing a microservice that processes messages from Pub/Sub. The service is deployed on Cloud Run and uses Cloud Firestore to store processed data. During load testing, the service frequently fails with 'DeadlineExceeded' errors from Firestore. What is the most likely cause and best practice to fix it?

Accepted Answer

Increase the Cloud Run container instance request timeout. The 'DeadlineExceeded' error from Firestore indicates that the Firestore client-side timeout has been exceeded, not the Cloud Run request timeout. However, the most likely cause is that the Cloud Run container instance request timeout (default 5 minutes) is too short for the processing time required, causing the instance to be terminated before the Firestore operation completes. Increasing the Cloud Run request timeout allows the container to wait longer for Firestore responses, preventing premature termination.

Answer

Increase the Pub/Sub subscription acknowledgment deadline

Answer

Enable CPU always allocation for the Cloud Run service

Answer

Add retry logic with exponential backoff for Firestore operations