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Professional-Cloud-Developer Sample Questions Answers

Questions 4

Your App Engine standard configuration is as follows:

service: production

instance_class: B1

You want to limit the application to 5 instances. Which code snippet should you include in your configuration?

Options:

A.

manual_scaling:instances: 5min_pending_latency: 30ms

B.

manual_scaling:max_instances: 5idle_timeout: 10m

C.

basic_scaling:instances: 5min_pending_latency: 30ms

D.

basic_scaling:max_instances: 5idle_timeout: 10m

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Questions 5

Your application is running on Compute Engine and is showing sustained failures for a small number of requests. You have narrowed the cause down to a single Compute Engine instance, but the instance is unresponsive to SSH. What should you do next?

Options:

A.

Reboot the machine.

B.

Enable and check the serial port output.

C.

Delete the machine and create a new one.

D.

Take a snapshot of the disk and attach it to a new machine.

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Questions 6

You are developing an ecommerce application that stores customer, order, and inventory data as relational tables inside Cloud Spanner. During a recent load test, you discover that Spanner performance is not scaling linearly as expected. Which of the following is the cause?

Options:

A.

The use of 64-bit numeric types for 32-bit numbers.

B.

The use of the STRING data type for arbitrary-precision values.

C.

The use of Version 1 UUIDs as primary keys that increase monotonically.

D.

The use of LIKE instead of STARTS_WITH keyword for parameterized SQL queries.

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Questions 7

You have an ecommerce application hosted in Google Kubernetes Engine (GKE) that receives external requests and forwards them to third-party APIs external to Google Cloud. The third-party APIs are responsible for credit card processing, shipping, and inventory management using the process shown in the diagram.

Your customers are reporting that the ecommerce application is running slowly at unpredictable times. The application doesn't report any metrics You need to determine the cause of the inconsistent performance What should you do?

Options:

A.

Install the Ops Agent inside your container and configure it to gather application metrics.

B.

Install the OpenTelemetry library for your respective language, and instrument your application.

C.

Modify your application to read and forward the x-Cloud-Trace-context header when it calls the

downstream services

D Enable Managed Service for Prometheus on the GKE cluster to gather application metrics.

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Questions 8

You are deploying your application on a Compute Engine instance that communicates with Cloud SQL. You will use Cloud SQL Proxy to allow your application to communicate to the database using the service account associated with the application’s instance. You want to follow the Google-recommended best practice of providing minimum access for the role assigned to the service account. What should you do?

Options:

A.

Assign the Project Editor role.

B.

Assign the Project Owner role.

C.

Assign the Cloud SQL Client role.

D.

Assign the Cloud SQL Editor role.

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Questions 9

Your application is running in multiple Google Kubernetes Engine clusters. It is managed by a Deployment in each cluster. The Deployment has created multiple replicas of your Pod in each cluster. You want to view the logs sent to stdout for all of the replicas in your Deployment in all clusters. Which command should you use?

Options:

A.

kubectl logs [PARAM]

B.

gcloud logging read [PARAM]

C.

kubectl exec –it [PARAM] journalctl

D.

gcloud compute ssh [PARAM] –-command= “sudo journalctl”

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Questions 10

You work for a web development team at a small startup. Your team is developing a Node.js application using Google Cloud services, including Cloud Storage and Cloud Build. The team uses a Git repository for version control. Your manager calls you over the weekend and instructs you to make an emergency update to one of the company’s websites, and you’re the only developer available. You need to access Google Cloud to make the update, but you don’t have your work laptop. You are not allowed to store source code locally on a non-corporate computer. How should you set up your developer environment?

Options:

A.

Use a text editor and the Git command line to send your source code updates as pull requests from a public computer.

B.

Use a text editor and the Git command line to send your source code updates as pull requests from a virtual machine running on a public computer.

C.

Use Cloud Shell and the built-in code editor for development. Send your source code updates as pull requests.

D.

Use a Cloud Storage bucket to store the source code that you need to edit. Mount the bucket to a public computer as a drive, and use a code editor to update the code. Turn on versioning for the bucket, and point it to the team’s Git repository.

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Questions 11

You have an application controlled by a managed instance group. When you deploy a new version of the application, costs should be minimized and the number of instances should not increase. You want to ensure that, when each new instance is created, the deployment only continues if the new instance is healthy. What should you do?

Options:

A.

Perform a rolling-action with maxSurge set to 1, maxUnavailable set to 0.

B.

Perform a rolling-action with maxSurge set to 0, maxUnavailable set to 1

C.

Perform a rolling-action with maxHealthy set to 1, maxUnhealthy set to 0.

D.

Perform a rolling-action with maxHealthy set to 0, maxUnhealthy set to 1.

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Questions 12

Your team is developing a new application using a PostgreSQL database and Cloud Run. You are responsible for ensuring that all traffic is kept private on Google Cloud. You want to use managed services and follow Google-recommended best practices. What should you do?

Options:

A.

1. Enable Cloud SQL and Cloud Run in the same project.

2. Configure a private IP address for Cloud SQL. Enable private services access.

3. Create a Serverless VPC Access connector.

4. Configure Cloud Run to use the connector to connect to Cloud SQL.

B.

1. Install PostgreSQL on a Compute Engine virtual machine (VM), and enable Cloud Run in the same project.

2. Configure a private IP address for the VM. Enable private services access.

3. Create a Serverless VPC Access connector.

4. Configure Cloud Run to use the connector to connect to the VM hosting PostgreSQL.

C.

1. Use Cloud SQL and Cloud Run in different projects.

2. Configure a private IP address for Cloud SQL. Enable private services access.

3. Create a Serverless VPC Access connector.

4. Set up a VPN connection between the two projects. Configure Cloud Run to use the connector to connect to Cloud SQL.

D.

1. Install PostgreSQL on a Compute Engine VM, and enable Cloud Run in different projects.

2. Configure a private IP address for the VM. Enable private services access.

3. Create a Serverless VPC Access connector.

4. Set up a VPN connection between the two projects. Configure Cloud Run to use the connector to access the VM hosting PostgreSQL

Questions 13

You have an application running in App Engine. Your application is instrumented with Stackdriver Trace. The /product-details request reports details about four known unique products at /sku-details as shown below. You want to reduce the time it takes for the request to complete. What should you do?

Options:

A.

Increase the size of the instance class.

B.

Change the Persistent Disk type to SSD.

C.

Change /product-details to perform the requests in parallel.

D.

Store the /sku-details information in a database, and replace the webservice call with a database query.

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Questions 14

You are a developer at a financial institution You use Cloud Shell to interact with Google Cloud services. User data is currently stored on an ephemeral disk however a recently passed regulation mandates that you can no longer store sensitive information on an ephemeral disk. You need to implement a new storage solution for your user data You want to minimize code changes Where should you store your user data'?

Options:

A.

Store user data on a Cloud Shell home disk and log in at least every 120 days to prevent its deletion

B.

Store user data on a persistent disk in a Compute Engine instance

C.

Store user data m BigQuery tables

D.

Store user data in a Cloud Storage bucket

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Questions 15

Your web application is deployed to the corporate intranet. You need to migrate the web application to Google Cloud. The web application must be available only to company employees and accessible to employees as they travel. You need to ensure the security and accessibility of the web application while minimizing application changes. What should you do?

Options:

A.

Configure the application to check authentication credentials for each HTTP(S) request to the application.

B.

Configure Identity-Aware Proxy to allow employees to access the application through its public IP address.

C.

Configure a Compute Engine instance that requests users to log in to their corporate account. Change the web application DNS to point to the proxy Compute Engine instance. After authenticating, the Compute Engine instance forwards requests to and from the web application.

D.

Configure a Compute Engine instance that requests users to log in to their corporate account. Change the web application DNS to point to the proxy Compute Engine instance. After authenticating, the Compute Engine issues an HTTP redirect to a public IP address hosting the web application.

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Questions 16

The development teams in your company want to manage resources from their local environments. You have been asked to enable developer access to each team’s Google Cloud projects. You want to maximize efficiency while following Google-recommended best practices. What should you do?

Options:

A.

Add the users to their projects, assign the relevant roles to the users, and then provide the users with each relevant Project ID.

B.

Add the users to their projects, assign the relevant roles to the users, and then provide the users with each relevant Project Number.

C.

Create groups, add the users to their groups, assign the relevant roles to the groups, and then provide the users with each relevant Project ID.

D.

Create groups, add the users to their groups, assign the relevant roles to the groups, and then provide the users with each relevant Project Number.

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Questions 17

You are working on a social media application. You plan to add a feature that allows users to upload images. These images will be 2 MB – 1 GB in size. You want to minimize their infrastructure operations overhead for this feature. What should you do?

Options:

A.

Change the application to accept images directly and store them in the database that stores other user information.

B.

Change the application to create signed URLs for Cloud Storage. Transfer these signed URLs to the client application to upload images to Cloud Storage.

C.

Set up a web server on GCP to accept user images and create a file store to keep uploaded files. Change the application to retrieve images from the file store.

D.

Create a separate bucket for each user in Cloud Storage. Assign a separate service account to allow write access on each bucket. Transfer service account credentials to the client application based on user information. The application uses this service account to upload images to Cloud Storage.

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Questions 18

You have an analytics application that runs hundreds of queries on BigQuery every few minutes using BigQuery API. You want to find out how much time these queries take to execute. What should you do?

Options:

A.

Use Stackdriver Monitoring to plot slot usage.

B.

Use Stackdriver Trace to plot API execution time.

C.

Use Stackdriver Trace to plot query execution time.

D.

Use Stackdriver Monitoring to plot query execution times.

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Questions 19

You recently developed an application that monitors a large number of stock prices. You need to configure Pub/Sub to receive a high volume messages and update the current stock price in a single large in-memory database The downstream service needs only the most up-to-date prices in the in-memory database to perform stock trading transactions Each message contains three pieces of information

• Stock symbol

• Stock price

• Timestamp for the update

.

How should you set up your Pub/Sub subscription?

Options:

A.

Create a pull subscription with both ordering and exactly-once delivery turned off

B.

Create a pull subscription with exactly-once delivery enabled

C.

Create a push subscription with exactly-once delivery enabled

D.

Create a push subscription with both ordering and exactly-once delivery turned off

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Questions 20

You are using Cloud Run to host a global ecommerce web application. Your company's design team is creating a new color scheme for the web app. You have been tasked with determining whether the new color scheme will increase sales You want to conduct testing on live production traffic How should you design the study?

Options:

A.

Use an external HTTP(S) load balancer to route a predetermined percentage of traffic to two different color

schemes of your application Analyze the results to determine whether there is a statistically significant

difference in sales.

B.

Use an external HTTP(S) load balancer to route traffic to the original color scheme while the new deployment

is created and tested After testing is complete reroute all traffic to the new color scheme Analyze the

results to determine whether there is a statistically significant difference in sales.

C.

Enable a feature flag that displays the new color scheme to half of all users. Monitor sales to see whether

they increase for this group of users.

D.

Use an external HTTP(S) load balancer to mirror traffic to the new version of your application Analyze the

results to determine whether there is a statistically significant difference in sales.

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Questions 21

In order to meet their business requirements, how should HipLocal store their application state?

Options:

A.

Use local SSDs to store state.

B.

Put a memcache layer in front of MySQL.

C.

Move the state storage to Cloud Spanner.

D.

Replace the MySQL instance with Cloud SQL.

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Questions 22

You are trying to connect to your Google Kubernetes Engine (GKE) cluster using kubectl from Cloud Shell. You have deployed your GKE cluster with a public endpoint. From Cloud Shell, you run the following command:

You notice that the kubectl commands time out without returning an error message. What is the most likely cause of this issue?

Options:

A.

Your user account does not have privileges to interact with the cluster using kubectl.

B.

Your Cloud Shell external IP address is not part of the authorized networks of the cluster.

C.

The Cloud Shell is not part of the same VPC as the GKE cluster.

D.

A VPC firewall is blocking access to the cluster’s endpoint.

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Questions 23

HipLocal wants to improve the resilience of their MySQL deployment, while also meeting their business and technical requirements.

Which configuration should they choose?

Options:

A.

Use the current single instance MySQL on Compute Engine and several read-only MySQL servers on

Compute Engine.

B.

Use the current single instance MySQL on Compute Engine, and replicate the data to Cloud SQL in an

external master configuration.

C.

Replace the current single instance MySQL instance with Cloud SQL, and configure high availability.

D.

Replace the current single instance MySQL instance with Cloud SQL, and Google provides redundancy

without further configuration.

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Questions 24

For this question, refer to the HipLocal case study.

Which Google Cloud product addresses HipLocal’s business requirements for service level indicators and objectives?

Options:

A.

Cloud Profiler

B.

Cloud Monitoring

C.

Cloud Trace

D.

Cloud Logging

Questions 25

For this question, refer to the HipLocal case study.

HipLocal's application uses Cloud Client Libraries to interact with Google Cloud. HipLocal needs to configure authentication and authorization in the Cloud Client Libraries to implement least privileged access for the application. What should they do?

Options:

A.

Create an API key. Use the API key to interact with Google Cloud.

B.

Use the default compute service account to interact with Google Cloud.

C.

Create a service account for the application. Export and deploy the private key for the application. Use the service account to interact with Google Cloud.

D.

Create a service account for the application and for each Google Cloud API used by the application. Export and deploy the private keys used by the application. Use the service account with one Google Cloud API to interact with Google Cloud.

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Questions 26

In order for HipLocal to store application state and meet their stated business requirements, which database service should they migrate to?

Options:

A.

Cloud Spanner

B.

Cloud Datastore

C.

Cloud Memorystore as a cache

D.

Separate Cloud SQL clusters for each region

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Questions 27

Which service should HipLocal use for their public APIs?

Options:

A.

Cloud Armor

B.

Cloud Functions

C.

Cloud Endpoints

D.

Shielded Virtual Machines

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Questions 28

Which database should HipLocal use for storing user activity?

Options:

A.

BigQuery

B.

Cloud SQL

C.

Cloud Spanner

D.

Cloud Datastore

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Questions 29

Which service should HipLocal use to enable access to internal apps?

Options:

A.

Cloud VPN

B.

Cloud Armor

C.

Virtual Private Cloud

D.

Cloud Identity-Aware Proxy

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Questions 30

HipLocal’s data science team wants to analyze user reviews.

How should they prepare the data?

Options:

A.

Use the Cloud Data Loss Prevention API for redaction of the review dataset.

B.

Use the Cloud Data Loss Prevention API for de-identification of the review dataset.

C.

Use the Cloud Natural Language Processing API for redaction of the review dataset.

D.

Use the Cloud Natural Language Processing API for de-identification of the review dataset.

Questions 31

HipLocal has connected their Hadoop infrastructure to GCP using Cloud Interconnect in order to query data stored on persistent disks.

Which IP strategy should they use?

Options:

A.

Create manual subnets.

B.

Create an auto mode subnet.

C.

Create multiple peered VPCs.

D.

Provision a single instance for NAT.

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Questions 32

HipLocal's APIs are showing occasional failures, but they cannot find a pattern. They want to collect some

metrics to help them troubleshoot.

What should they do?

Options:

A.

Take frequent snapshots of all of the VMs.

B.

Install the Stackdriver Logging agent on the VMs.

C.

Install the Stackdriver Monitoring agent on the VMs.

D.

Use Stackdriver Trace to look for performance bottlenecks.

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Questions 33

HipLocal wants to reduce the number of on-call engineers and eliminate manual scaling.

Which two services should they choose? (Choose two.)

Options:

A.

Use Google App Engine services.

B.

Use serverless Google Cloud Functions.

C.

Use Knative to build and deploy serverless applications.

D.

Use Google Kubernetes Engine for automated deployments.

E.

Use a large Google Compute Engine cluster for deployments.

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Questions 34

For this question, refer to the HipLocal case study.

How should HipLocal increase their API development speed while continuing to provide the QA team with a stable testing environment that meets feature requirements?

Options:

A.

Include unit tests in their code, and prevent deployments to QA until all tests have a passing status.

B.

Include performance tests in their code, and prevent deployments to QA until all tests have a passing status.

C.

Create health checks for the QA environment, and redeploy the APIs at a later time if the environment is unhealthy.

D.

Redeploy the APIs to App Engine using Traffic Splitting. Do not move QA traffic to the new versions if errors are found.

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Questions 35

For this question, refer to the HipLocal case study.

HipLocal is expanding into new locations. They must capture additional data each time the application is launched in a new European country. This is causing delays in the development process due to constant schema changes and a lack of environments for conducting testing on the application changes. How should they resolve the issue while meeting the business requirements?

Options:

A.

Create new Cloud SQL instances in Europe and North America for testing and deployment. Provide developers with local MySQL instances to conduct testing on the application changes.

B.

Migrate data to Bigtable. Instruct the development teams to use the Cloud SDK to emulate a local Bigtable development environment.

C.

Move from Cloud SQL to MySQL hosted on Compute Engine. Replicate hosts across regions in the Americas and Europe. Provide developers with local MySQL instances to conduct testing on the application changes.

D.

Migrate data to Firestore in Native mode and set up instan

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Questions 36

For this question refer to the HipLocal case study.

HipLocal wants to reduce the latency of their services for users in global locations. They have created read replicas of their database in locations where their users reside and configured their service to read traffic using those replicas. How should they further reduce latency for all database interactions with the least amount of effort?

Options:

A.

Migrate the database to Bigtable and use it to serve all global user traffic.

B.

Migrate the database to Cloud Spanner and use it to serve all global user traffic.

C.

Migrate the database to Firestore in Datastore mode and use it to serve all global user traffic.

D.

Migrate the services to Google Kubernetes Engine and use a load balancer service to better scale the application.

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Questions 37

For this question, refer to the HipLocal case study.

A recent security audit discovers that HipLocal’s database credentials for their Compute Engine-hosted MySQL databases are stored in plain text on persistent disks. HipLocal needs to reduce the risk of these credentials being stolen. What should they do?

Options:

A.

Create a service account and download its key. Use the key to authenticate to Cloud Key Management Service (KMS) to obtain the database credentials.

B.

Create a service account and download its key. Use the key to authenticate to Cloud Key Management Service (KMS) to obtain a key used to decrypt the database credentials.

C.

Create a service account and grant it the roles/iam.serviceAccountUser role. Impersonate as this account and authenticate using the Cloud SQL Proxy.

D.

Grant the roles/secretmanager.secretAccessor role to the Compute Engine service account. Store and access the database credentials with the Secret Manager API.

Questions 38

HipLocal's.net-based auth service fails under intermittent load.

What should they do?

Options:

A.

Use App Engine for autoscaling.

B.

Use Cloud Functions for autoscaling.

C.

Use a Compute Engine cluster for the service.

D.

Use a dedicated Compute Engine virtual machine instance for the service.

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Questions 39

For this question, refer to the HipLocal case study.

How should HipLocal redesign their architecture to ensure that the application scales to support a large increase in users?

Options:

A.

Use Google Kubernetes Engine (GKE) to run the application as a microservice. Run the MySQL database on a dedicated GKE node.

B.

Use multiple Compute Engine instances to run MySQL to store state information. Use a Google Cloud-managed load balancer to distribute the load between instances. Use managed instance groups for scaling.

C.

Use Memorystore to store session information and CloudSQL to store state information. Use a Google Cloud-managed load balancer to distribute the load between instances. Use managed instance groups for scaling.

D.

Use a Cloud Storage bucket to serve the application as a static website, and use another Cloud Storage bucket to store user state information.

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Questions 40

HipLocal is configuring their access controls.

Which firewall configuration should they implement?

Options:

A.

Block all traffic on port 443.

B.

Allow all traffic into the network.

C.

Allow traffic on port 443 for a specific tag.

D.

Allow all traffic on port 443 into the network.

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Exam Code: Professional-Cloud-Developer
Exam Name: Google Certified Professional - Cloud Developer
Last Update: Jul 11, 2024
Questions: 265
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