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PCA — questions

Page 6 of 17 · 337 total questions.

PCA Question 101

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Topic 1 · Question 101

Your company is building a new architecture to support its data-centric business focus. You are responsible for setting up the network. Your company's mobile and web-facing applications will be deployed on-premises, and all data analysis will be conducted in GCP. The plan is to process and load 7 years of archived .csv files totaling 900 TB of data and then continue loading 10 TB of data daily. You currently have an existing 100-MB internet connection. What actions will meet your company's needs?

  • ACompress and upload both archived files and files uploaded daily using the gsutil ""m option.
  • BLease a Transfer Appliance, upload archived files to it, and send it to Google to transfer archived data to Cloud Storage. Establish a connection with Google using a Dedicated Interconnect or Direct Peering connection and use it to upload files daily. (correct answer)
  • CLease a Transfer Appliance, upload archived files to it, and send it to Google to transfer archived data to Cloud Storage. Establish one Cloud VPN Tunnel to VPC networks over the public internet, and compress and upload files daily using the gsutil ""m option.
  • DLease a Transfer Appliance, upload archived files to it, and send it to Google to transfer archived data to Cloud Storage. Establish a Cloud VPN Tunnel to VPC networks over the public internet, and compress and upload files daily.
Reveal answer & explanation
Correct answer: B

The correct answer is B. Option B: Lease a Transfer Appliance, upload archived files to it, and send it to Google to transfer archived data to Cloud Storage. Establish a connection with Google using a Dedicated Interconnect or Direct Peering connection...

Explanation

Cloud Storage provides durable, scalable object storage that is fully managed. Transfer Appliance physically ships large datasets to Google Cloud when bandwidth is limited. Dedicated Interconnect provides a private physical connection into Google's network.

PCA Question 102

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Topic 1 · Question 102

You are developing a globally scaled frontend for a legacy streaming backend data API. This API expects events in strict chronological order with no repeat data for proper processing. Which products should you deploy to ensure guaranteed-once FIFO (first-in, first-out) delivery of data?

  • ACloud Pub/Sub alone (correct answer)
  • BCloud Pub/Sub to Cloud Dataflow
  • CCloud Pub/Sub to Stackdriver
  • DCloud Pub/Sub to Cloud SQL
Reveal answer & explanation
Correct answer: A

The correct answer is A. Option A: Cloud Pub/Sub alone

Explanation

Pub/Sub is a serverless, global messaging service that decouples services and ingests high-volume event streams. This option meets the real-time / low-latency performance requirement.

PCA Question 103

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Topic 1 · Question 103

Your company is planning to perform a lift and shift migration of their Linux RHEL 6.5+ virtual machines. The virtual machines are running in an on-premises VMware environment. You want to migrate them to Compute Engine following Google-recommended practices. What should you do?

  • A1. Define a migration plan based on the list of the applications and their dependencies. 2. Migrate all virtual machines into Compute Engine individually with Migrate for Compute Engine.
  • B1. Perform an assessment of virtual machines running in the current VMware environment. 2. Create images of all disks. Import disks on Compute Engine. 3. Create standard virtual machines where the boot disks are the ones you have imported.
  • C1. Perform an assessment of virtual machines running in the current VMware environment. 2. Define a migration plan, prepare a Migrate for Compute Engine migration RunBook, and execute the migration. (correct answer)
  • D1. Perform an assessment of virtual machines running in the current VMware environment. 2. Install a third-party agent on all selected virtual machines. 3. Migrate all virtual machines into Compute Engine.
Reveal answer & explanation
Correct answer: C

The correct answer is C. Option C: 1. Perform an assessment of virtual machines running in the current VMware environment. 2. Define a migration plan, prepare a Migrate for Compute Engine migration RunBook, and execute the migration.

Explanation

Compute Engine provides configurable virtual machines when you need full control of the OS. Migrate for Compute Engine rehosts on-premises servers to Compute Engine.

PCA Question 104

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Topic 1 · Question 104

You need to deploy an application to Google Cloud. The application receives traffic via TCP and reads and writes data to the filesystem. The application does not support horizontal scaling. The application process requires full control over the data on the file system because concurrent access causes corruption. The business is willing to accept a downtime when an incident occurs, but the application must be available 24/7 to support their business operations. You need to design the architecture of this application on Google Cloud. What should you do?

  • AUse a managed instance group with instances in multiple zones, use Cloud Filestore, and use an HTTP load balancer in front of the instances.
  • BUse a managed instance group with instances in multiple zones, use Cloud Filestore, and use a network load balancer in front of the instances.
  • CUse an unmanaged instance group with an active and standby instance in different zones, use a regional persistent disk, and use an HTTP load balancer in front of the instances.
  • DUse an unmanaged instance group with an active and standby instance in different zones, use a regional persistent disk, and use a network load balancer in front of the instances. (correct answer)
Reveal answer & explanation
Correct answer: D

The correct answer is D. Option D: Use an unmanaged instance group with an active and standby instance in different zones, use a regional persistent disk, and use a network load balancer in front of the instances.

Explanation

A managed instance group provides autoscaling, autohealing, and rolling updates for VMs. Persistent Disk provides durable block storage attached to Compute Engine VMs. A load balancer distributes traffic across healthy backends in multiple zones for availability and scale.

PCA Question 105

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Topic 1 · Question 105

Your company has an application running on multiple Compute Engine instances. You need to ensure that the application can communicate with an on-premises service that requires high throughput via internal IPs, while minimizing latency. What should you do?

  • AUse OpenVPN to configure a VPN tunnel between the on-premises environment and Google Cloud.
  • BConfigure a direct peering connection between the on-premises environment and Google Cloud.
  • CUse Cloud VPN to configure a VPN tunnel between the on-premises environment and Google Cloud.
  • DConfigure a Cloud Dedicated Interconnect connection between the on-premises environment and Google Cloud. (correct answer)
Reveal answer & explanation
Correct answer: D

The correct answer is D. Option D: Configure a Cloud Dedicated Interconnect connection between the on-premises environment and Google Cloud.

Explanation

Dedicated Interconnect provides a private physical connection into Google's network.

PCA Question 106

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Topic 1 · Question 106

You are managing an application deployed on Cloud Run for Anthos, and you need to define a strategy for deploying new versions of the application. You want to evaluate the new code with a subset of production traffic to decide whether to proceed with the rollout. What should you do?

  • ADeploy a new revision to Cloud Run with the new version. Configure traffic percentage between revisions. (correct answer)
  • BDeploy a new service to Cloud Run with the new version. Add a Cloud Load Balancing instance in front of both services.
  • CIn the Google Cloud Console page for Cloud Run, set up continuous deployment using Cloud Build for the development branch. As part of the Cloud Build trigger, configure the substitution variable TRAFFIC_PERCENTAGE with the percentage of traffic you want directed to a new version.
  • DIn the Google Cloud Console, configure Traffic Director with a new Service that points to the new version of the application on Cloud Run. Configure Traffic Director to send a small percentage of traffic to the new version of the application.
Reveal answer & explanation
Correct answer: A

The correct answer is A. Option A: Deploy a new revision to Cloud Run with the new version. Configure traffic percentage between revisions.

Explanation

Cloud Run runs stateless containers serverlessly and scales to zero, minimizing operational overhead.

PCA Question 107

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Topic 1 · Question 107

You are monitoring Google Kubernetes Engine (GKE) clusters in a Cloud Monitoring workspace. As a Site Reliability Engineer (SRE), you need to triage incidents quickly. What should you do?

  • ANavigate the predefined dashboards in the Cloud Monitoring workspace, and then add metrics and create alert policies. (correct answer)
  • BNavigate the predefined dashboards in the Cloud Monitoring workspace, create custom metrics, and install alerting software on a Compute Engine instance.
  • CWrite a shell script that gathers metrics from GKE nodes, publish these metrics to a Pub/Sub topic, export the data to BigQuery, and make a Data Studio dashboard.
  • DCreate a custom dashboard in the Cloud Monitoring workspace for each incident, and then add metrics and create alert policies.
Reveal answer & explanation
Correct answer: A

The correct answer is A. Option A: Navigate the predefined dashboards in the Cloud Monitoring workspace, and then add metrics and create alert policies.

Explanation

Cloud Monitoring collects metrics, dashboards, and alerts to observe system health.

PCA Question 108

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Topic 1 · Question 108 · Select all that apply

You are implementing a single Cloud SQL MySQL second-generation database that contains business-critical transaction data. You want to ensure that the minimum amount of data is lost in case of catastrophic failure. Which two features should you implement? (Choose two.)

  • ASharding
  • BRead replicas
  • CBinary logging (correct answer)
  • DAutomated backups (correct answer)
  • ESemisynchronous replication
Reveal answer & explanation
Correct answer: C, D

The correct answer is C, D. Option C: Binary logging Option D: Automated backups.

PCA Question 109

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Topic 1 · Question 109

You are working at a sports association whose members range in age from 8 to 30. The association collects a large amount of health data, such as sustained injuries. You are storing this data in BigQuery. Current legislation requires you to delete such information upon request of the subject. You want to design a solution that can accommodate such a request. What should you do?

  • AUse a unique identifier for each individual. Upon a deletion request, delete all rows from BigQuery with this identifier. (correct answer)
  • BWhen ingesting new data in BigQuery, run the data through the Data Loss Prevention (DLP) API to identify any personal information. As part of the DLP scan, save the result to Data Catalog. Upon a deletion request, query Data Catalog to find the column with personal information.
  • CCreate a BigQuery view over the table that contains all data. Upon a deletion request, exclude the rows that affect the subject's data from this view. Use this view instead of the source table for all analysis tasks.
  • DUse a unique identifier for each individual. Upon a deletion request, overwrite the column with the unique identifier with a salted SHA256 of its value.
Reveal answer & explanation
Correct answer: A

The correct answer is A. Option A: Use a unique identifier for each individual. Upon a deletion request, delete all rows from BigQuery with this identifier.

Explanation

BigQuery is a serverless, petabyte-scale data warehouse for fast SQL analytics with no infrastructure to manage.

PCA Question 110

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Topic 1 · Question 110

Your company has announced that they will be outsourcing operations functions. You want to allow developers to easily stage new versions of a cloud-based application in the production environment and allow the outsourced operations team to autonomously promote staged versions to production. You want to minimize the operational overhead of the solution. Which Google Cloud product should you migrate to?

  • AApp Engine (correct answer)
  • BGKE On-Prem
  • CCompute Engine
  • DGoogle Kubernetes Engine
Reveal answer & explanation
Correct answer: A

The correct answer is A. Option A: App Engine

Explanation

App Engine is a fully managed platform that runs and autoscales web apps with little operational effort.

PCA Question 111

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Topic 1 · Question 111

Your company is running its application workloads on Compute Engine. The applications have been deployed in production, acceptance, and development environments. The production environment is business-critical and is used 24/7, while the acceptance and development environments are only critical during office hours. Your CFO has asked you to optimize these environments to achieve cost savings during idle times. What should you do?

  • ACreate a shell script that uses the gcloud command to change the machine type of the development and acceptance instances to a smaller machine type outside of office hours. Schedule the shell script on one of the production instances to automate the task.
  • BUse Cloud Scheduler to trigger a Cloud Function that will stop the development and acceptance environments after office hours and start them just before office hours.
  • CDeploy the development and acceptance applications on a managed instance group and enable autoscaling. (correct answer)
  • DUse regular Compute Engine instances for the production environment, and use preemptible VMs for the acceptance and development environments.
Reveal answer & explanation
Correct answer: C

The correct answer is C. Option C: Deploy the development and acceptance applications on a managed instance group and enable autoscaling.

Explanation

A managed instance group provides autoscaling, autohealing, and rolling updates for VMs.

PCA Question 112

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Topic 1 · Question 112

You are moving an application that uses MySQL from on-premises to Google Cloud. The application will run on Compute Engine and will use Cloud SQL. You want to cut over to the Compute Engine deployment of the application with minimal downtime and no data loss to your customers. You want to migrate the application with minimal modification. You also need to determine the cutover strategy. What should you do?

  • A1. Set up Cloud VPN to provide private network connectivity between the Compute Engine application and the on-premises MySQL server. 2. Stop the on-premises application. 3. Create a mysqldump of the on-premises MySQL server. 4. Upload the dump to a Cloud Storage bucket. 5. Import the dump into Cloud SQL. 6. Modify the source code of the application to write queries to both databases and read from its local database. 7. Start the Compute Engine application. 8. Stop the on-premises application.
  • B1. Set up Cloud SQL proxy and MySQL proxy. 2. Create a mysqldump of the on-premises MySQL server. 3. Upload the dump to a Cloud Storage bucket. 4. Import the dump into Cloud SQL. 5. Stop the on-premises application. 6. Start the Compute Engine application.
  • C1. Set up Cloud VPN to provide private network connectivity between the Compute Engine application and the on-premises MySQL server. 2. Stop the on-premises application. 3. Start the Compute Engine application, configured to read and write to the on-premises MySQL server. 4. Create the replication configuration in Cloud SQL. 5. Configure the source database server to accept connections from the Cloud SQL replica. 6. Finalize the Cloud SQL replica configuration. 7. When replication has been completed, stop the Compute Engine application. 8. Promote the Cloud SQL replica to a standalone instance. 9. Restart the Compute Engine application, configured to read and write to the Cloud SQL standalone instance. (correct answer)
  • D1. Stop the on-premises application. 2. Create a mysqldump of the on-premises MySQL server. 3. Upload the dump to a Cloud Storage bucket. 4. Import the dump into Cloud SQL. 5. Start the application on Compute Engine.
Reveal answer & explanation
Correct answer: C

The correct answer is C. Option C: 1. Set up Cloud VPN to provide private network connectivity between the Compute Engine application and the on-premises MySQL server. 2. Stop the on-premises application. 3. Start the Compute Engine application, config...

Explanation

Compute Engine provides configurable virtual machines when you need full control of the OS. Cloud SQL is a managed relational database (MySQL/PostgreSQL/SQL Server) that handles patching, backups, and failover. Cloud VPN provides encrypted IPsec connectivity between on premises and a VPC.

PCA Question 113

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Topic 1 · Question 113

Your organization has decided to restrict the use of external IP addresses on instances to only approved instances. You want to enforce this requirement across all of your Virtual Private Clouds (VPCs). What should you do?

  • ARemove the default route on all VPCs. Move all approved instances into a new subnet that has a default route to an internet gateway.
  • BCreate a new VPC in custom mode. Create a new subnet for the approved instances, and set a default route to the internet gateway on this new subnet.
  • CImplement a Cloud NAT solution to remove the need for external IP addresses entirely.
  • DSet an Organization Policy with a constraint on constraints/compute.vmExternalIpAccess. List the approved instances in the allowedValues list. (correct answer)
Reveal answer & explanation
Correct answer: D

The correct answer is D. Option D: Set an Organization Policy with a constraint on constraints/compute.vmExternalIpAccess. List the approved instances in the allowedValues list.

Explanation

Organization Policy sets guardrails that constrain how resources can be configured across the org.

PCA Question 114

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Topic 1 · Question 114

Your company uses the Firewall Insights feature in the Google Network Intelligence Center. You have several firewall rules applied to Compute Engine instances. You need to evaluate the efficiency of the applied firewall ruleset. When you bring up the Firewall Insights page in the Google Cloud Console, you notice that there are no log rows to display. What should you do to troubleshoot the issue?

  • AEnable Virtual Private Cloud (VPC) flow logging.
  • BEnable Firewall Rules Logging for the firewall rules you want to monitor. (correct answer)
  • CVerify that your user account is assigned the compute.networkAdmin Identity and Access Management (IAM) role.
  • DInstall the Google Cloud SDK, and verify that there are no Firewall logs in the command line output.
Reveal answer & explanation
Correct answer: B

The correct answer is B. Option B: Enable Firewall Rules Logging for the firewall rules you want to monitor.

PCA Question 115

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Topic 1 · Question 115

Your company has sensitive data in Cloud Storage buckets. Data analysts have Identity Access Management (IAM) permissions to read the buckets. You want to prevent data analysts from retrieving the data in the buckets from outside the office network. What should you do?

  • A1. Create a VPC Service Controls perimeter that includes the projects with the buckets. 2. Create an access level with the CIDR of the office network. (correct answer)
  • B1. Create a firewall rule for all instances in the Virtual Private Cloud (VPC) network for source range. 2. Use the Classless Inter-domain Routing (CIDR) of the office network.
  • C1. Create a Cloud Function to remove IAM permissions from the buckets, and another Cloud Function to add IAM permissions to the buckets. 2. Schedule the Cloud Functions with Cloud Scheduler to add permissions at the start of business and remove permissions at the end of business.
  • D1. Create a Cloud VPN to the office network. 2. Configure Private Google Access for on-premises hosts.
Reveal answer & explanation
Correct answer: A

The correct answer is A. Option A: 1. Create a VPC Service Controls perimeter that includes the projects with the buckets. 2. Create an access level with the CIDR of the office network.

Explanation

VPC Service Controls create a security perimeter around managed services to prevent data exfiltration. A VPC provides a global, software-defined private network for your Google Cloud resources.

PCA Question 116

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Topic 1 · Question 116

You have developed a non-critical update to your application that is running in a managed instance group, and have created a new instance template with the update that you want to release. To prevent any possible impact to the application, you don't want to update any running instances. You want any new instances that are created by the managed instance group to contain the new update. What should you do?

  • AStart a new rolling restart operation.
  • BStart a new rolling replace operation.
  • CStart a new rolling update. Select the Proactive update mode.
  • DStart a new rolling update. Select the Opportunistic update mode. (correct answer)
Reveal answer & explanation
Correct answer: D

The correct answer is D. Option D: Start a new rolling update. Select the Opportunistic update mode.

PCA Question 117

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Topic 1 · Question 117

Your company is designing its application landscape on Compute Engine. Whenever a zonal outage occurs, the application should be restored in another zone as quickly as possible with the latest application data. You need to design the solution to meet this requirement. What should you do?

  • ACreate a snapshot schedule for the disk containing the application data. Whenever a zonal outage occurs, use the latest snapshot to restore the disk in the same zone.
  • BConfigure the Compute Engine instances with an instance template for the application, and use a regional persistent disk for the application data. Whenever a zonal outage occurs, use the instance template to spin up the application in another zone in the same region. Use the regional persistent disk for the application data. (correct answer)
  • CCreate a snapshot schedule for the disk containing the application data. Whenever a zonal outage occurs, use the latest snapshot to restore the disk in another zone within the same region.
  • DConfigure the Compute Engine instances with an instance template for the application, and use a regional persistent disk for the application data. Whenever a zonal outage occurs, use the instance template to spin up the application in another region. Use the regional persistent disk for the application data.
Reveal answer & explanation
Correct answer: B

The correct answer is B. Option B: Configure the Compute Engine instances with an instance template for the application, and use a regional persistent disk for the application data. Whenever a zonal outage occurs, use the instance template to spin up t...

Explanation

Compute Engine provides configurable virtual machines when you need full control of the OS. Persistent Disk provides durable block storage attached to Compute Engine VMs.

PCA Question 118

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Topic 1 · Question 118

Your company has just acquired another company, and you have been asked to integrate their existing Google Cloud environment into your company's data center. Upon investigation, you discover that some of the RFC 1918 IP ranges being used in the new company's Virtual Private Cloud (VPC) overlap with your data center IP space. What should you do to enable connectivity and make sure that there are no routing conflicts when connectivity is established?

  • ACreate a Cloud VPN connection from the new VPC to the data center, create a Cloud Router, and apply new IP addresses so there is no overlapping IP space.
  • BCreate a Cloud VPN connection from the new VPC to the data center, and create a Cloud NAT instance to perform NAT on the overlapping IP space. (correct answer)
  • CCreate a Cloud VPN connection from the new VPC to the data center, create a Cloud Router, and apply a custom route advertisement to block the overlapping IP space.
  • DCreate a Cloud VPN connection from the new VPC to the data center, and apply a firewall rule that blocks the overlapping IP space.
Reveal answer & explanation
Correct answer: B

The correct answer is B. Option B: Create a Cloud VPN connection from the new VPC to the data center, and create a Cloud NAT instance to perform NAT on the overlapping IP space.

Explanation

Cloud NAT lets private instances reach the internet for outbound traffic without external IPs. Cloud VPN provides encrypted IPsec connectivity between on premises and a VPC. A VPC provides a global, software-defined private network for your Google Cloud resources.

PCA Question 119

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Topic 1 · Question 119

You need to migrate Hadoop jobs for your company's Data Science team without modifying the underlying infrastructure. You want to minimize costs and infrastructure management effort. What should you do?

  • ACreate a Dataproc cluster using standard worker instances.
  • BCreate a Dataproc cluster using preemptible worker instances. (correct answer)
  • CManually deploy a Hadoop cluster on Compute Engine using standard instances.
  • DManually deploy a Hadoop cluster on Compute Engine using preemptible instances.
Reveal answer & explanation
Correct answer: B

The correct answer is B. Option B: Create a Dataproc cluster using preemptible worker instances.

Explanation

Preemptible/Spot VMs use spare capacity at a large discount for fault-tolerant, interruptible work. Dataproc runs managed Spark and Hadoop clusters for big-data processing. This option delivers the requirement at the lowest cost.

PCA Question 120

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Topic 1 · Question 120

Your company has a project in Google Cloud with three Virtual Private Clouds (VPCs). There is a Compute Engine instance on each VPC. Network subnets do not overlap and must remain separated. The network configuration is shown below. Instance #1 is an exception and must communicate directly with both Instance #2 and Instance #3 via internal IPs. How should you accomplish this?

  • ACreate a cloud router to advertise subnet #2 and subnet #3 to subnet #1.
  • BAdd two additional NICs to Instance #1 with the following configuration: • NIC1 • VPC: VPC #2 • SUBNETWORK: subnet #2 • NIC2 • VPC: VPC #3 • SUBNETWORK: subnet #3 Update firewall rules to enable traffic between instances. (correct answer)
  • CCreate two VPN tunnels via CloudVPN: • 1 between VPC #1 and VPC #2. • 1 between VPC #2 and VPC #3. Update firewall rules to enable traffic between the instances.
  • DPeer all three VPCs: • Peer VPC #1 with VPC #2. • Peer VPC #2 with VPC #3. Update firewall rules to enable traffic between the instances.
Reveal answer & explanation
Correct answer: B

The correct answer is B. Option B: Add two additional NICs to Instance #1 with the following configuration: • NIC1 • VPC: VPC #2 • SUBNETWORK: subnet #2 • NIC2 • VPC: VPC #3 • SUBNETWORK: subnet #3 Update firewall rules to enable traffic be...

Explanation

A VPC provides a global, software-defined private network for your Google Cloud resources.

Showing questions 101–120 of 337 · Page 6 of 17