Question 161
You are building a mobile application that will store hierarchical data structures in a database. The application will enable users working offline to sync changes when they are back online. A backend service will enrich the data in the database using a service account. The application is expected to be very popular and needs to scale seamlessly and securely. Which database and IAM role should you use?
A. Use Cloud SQL, and assign the roles/cloudsql.editor role to the service account.
B. Use Bigtable, and assign the roles/bigtable.viewer role to the service account.
C. Use Firestore in Native mode and assign the roles/datastore.user role to the service account.
D. Use Firestore in Datastore mode and assign the roles/datastore.viewer role to the service account.
Question 162
Your application is deployed on hundreds of Compute Engine instances in a managed instance group (MIG) in multiple zones. You need to deploy a new instance template to fix a critical vulnerability immediately but must avoid impact to your service. What setting should be made to the MIG after updating the instance template?
A. Set the Max Surge to 100%.
B. Set the Update mode to Opportunistic.
C. Set the Maximum Unavailable to 100%.
D. Set the Minimum Wait time to 0 seconds.
Question 163
You made a typo in a low-level Linux configuration file that prevents your Compute Engine instance from booting to a normal run level. You just created the Compute Engine instance today and have done no other maintenance on it, other than tweaking files. How should you correct this error?
A. Download the file using scp, change the file, and then upload the modified version
B. Configure and log in to the Compute Engine instance through SSH, and change the file
C. Configure and log in to the Compute Engine instance through the serial port, and change the file
D. Configure and log in to the Compute Engine instance using a remote desktop client, and change the file
Question 164
You are developing an application that needs to store files belonging to users in Cloud Storage. You want each user to have their own subdirectory in Cloud Storage. When a new user is created, the corresponding empty subdirectory should also be created. What should you do?
A. Create an object with the name of the subdirectory ending with a trailing slash ('/') that is zero bytes in length.
B. Create an object with the name of the subdirectory, and then immediately delete the object within that subdirectory.
C. Create an object with the name of the subdirectory that is zero bytes in length and has WRITER access control list permission.
D. Create an object with the name of the subdirectory that is zero bytes in length. Set the Content-Type metadata to CLOUDSTORAGE_FOLDER.
Question 165
Your company’s corporate policy states that there must be a copyright comment at the very beginning of all source files. You want to write a custom step in Cloud Build that is triggered by each source commit. You need the trigger to validate that the source contains a copyright and add one for subsequent steps if not there. What should you do?
A. Build a new Docker container that examines the files in /workspace and then checks and adds a copyright for each source file. Changed files are explicitly committed back to the source repository.
B. Build a new Docker container that examines the files in /workspace and then checks and adds a copyright for each source file. Changed files do not need to be committed back to the source repository.
C. Build a new Docker container that examines the files in a Cloud Storage bucket and then checks and adds a copyright for each source file. Changed files are written back to the Cloud Storage bucket.
D. Build a new Docker container that examines the files in a Cloud Storage bucket and then checks and adds a copyright for each source file. Changed files are explicitly committed back to the source repository.
Question 166
One of your deployed applications in Google Kubernetes Engine (GKE) is having intermittent performance issues. Your team uses a third-party logging solution. You want to install this solution on each node in your GKE cluster so you can view the logs. What should you do?
A. Deploy the third-party solution as a DaemonSet
B. Modify your container image to include the monitoring software
C. Use SSH to connect to the GKE node, and install the software manually
D. Deploy the third-party solution using Terraform and deploy the logging Pod as a Kubernetes Deployment
Question 167
Case study -
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.
To start the case study -
To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.
Company Overview -
HipLocal is a community application designed to facilitate communication between people in close proximity. It is used for event planning and organizing sporting events, and for businesses to connect with their local communities. HipLocal launched recently in a few neighborhoods in Dallas and is rapidly growing into a global phenomenon. Its unique style of hyper-local community communication and business outreach is in demand around the world.
Executive Statement -
We are the number one local community app; it's time to take our local community services global. Our venture capital investors want to see rapid growth and the same great experience for new local and virtual communities that come online, whether their members are 10 or 10000 miles away from each other.
Solution Concept -
HipLocal wants to expand their existing service, with updated functionality, in new regions to better serve their global customers. They want to hire and train a new team to support these regions in their time zones. They will need to ensure that the application scales smoothly and provides clear uptime data, and that they analyze and respond to any issues that occur.
Existing Technical Environment -
HipLocal's environment is a mix of on-premises hardware and infrastructure running in Google Cloud Platform. The HipLocal team understands their application well, but has limited experience in global scale applications. Their existing technical environment is as follows:
• Existing APIs run on Compute Engine virtual machine instances hosted in GCP.
• State is stored in a single instance MySQL database in GCP.
• Release cycles include development freezes to allow for QA testing.
• The application has no logging.
• Applications are manually deployed by infrastructure engineers during periods of slow traffic on weekday evenings.
• There are basic indicators of uptime; alerts are frequently fired when the APIs are unresponsive.
Business Requirements -
HipLocal's investors want to expand their footprint and support the increase in demand they are seeing. Their requirements are:
• Expand availability of the application to new regions.
• Support 10x as many concurrent users.
• Ensure a consistent experience for users when they travel to different regions.
• Obtain user activity metrics to better understand how to monetize their product.
• Ensure compliance with regulations in the new regions (for example, GDPR).
• Reduce infrastructure management time and cost.
• Adopt the Google-recommended practices for cloud computing.
○ Develop standardized workflows and processes around application lifecycle management.
○ Define service level indicators (SLIs) and service level objectives (SLOs).
Technical Requirements -
• Provide secure communications between the on-premises data center and cloud-hosted applications and infrastructure.
• The application must provide usage metrics and monitoring.
• APIs require authentication and authorization.
• Implement faster and more accurate validation of new features.
• Logging and performance metrics must provide actionable information to be able to provide debugging information and alerts.
• Must scale to meet user demand.
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?
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.
Question 168
Case study -
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.
To start the case study -
To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.
Company Overview -
HipLocal is a community application designed to facilitate communication between people in close proximity. It is used for event planning and organizing sporting events, and for businesses to connect with their local communities. HipLocal launched recently in a few neighborhoods in Dallas and is rapidly growing into a global phenomenon. Its unique style of hyper-local community communication and business outreach is in demand around the world.
Executive Statement -
We are the number one local community app; it's time to take our local community services global. Our venture capital investors want to see rapid growth and the same great experience for new local and virtual communities that come online, whether their members are 10 or 10000 miles away from each other.
Solution Concept -
HipLocal wants to expand their existing service, with updated functionality, in new regions to better serve their global customers. They want to hire and train a new team to support these regions in their time zones. They will need to ensure that the application scales smoothly and provides clear uptime data, and that they analyze and respond to any issues that occur.
Existing Technical Environment -
HipLocal's environment is a mix of on-premises hardware and infrastructure running in Google Cloud Platform. The HipLocal team understands their application well, but has limited experience in global scale applications. Their existing technical environment is as follows:
• Existing APIs run on Compute Engine virtual machine instances hosted in GCP.
• State is stored in a single instance MySQL database in GCP.
• Release cycles include development freezes to allow for QA testing.
• The application has no logging.
• Applications are manually deployed by infrastructure engineers during periods of slow traffic on weekday evenings.
• There are basic indicators of uptime; alerts are frequently fired when the APIs are unresponsive.
Business Requirements -
HipLocal's investors want to expand their footprint and support the increase in demand they are seeing. Their requirements are:
• Expand availability of the application to new regions.
• Support 10x as many concurrent users.
• Ensure a consistent experience for users when they travel to different regions.
• Obtain user activity metrics to better understand how to monetize their product.
• Ensure compliance with regulations in the new regions (for example, GDPR).
• Reduce infrastructure management time and cost.
• Adopt the Google-recommended practices for cloud computing.
○ Develop standardized workflows and processes around application lifecycle management.
○ Define service level indicators (SLIs) and service level objectives (SLOs).
Technical Requirements -
• Provide secure communications between the on-premises data center and cloud-hosted applications and infrastructure.
• The application must provide usage metrics and monitoring.
• APIs require authentication and authorization.
• Implement faster and more accurate validation of new features.
• Logging and performance metrics must provide actionable information to be able to provide debugging information and alerts.
• Must scale to meet user demand.
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?
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.
Question 169
Case study -
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.
To start the case study -
To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.
Company Overview -
HipLocal is a community application designed to facilitate communication between people in close proximity. It is used for event planning and organizing sporting events, and for businesses to connect with their local communities. HipLocal launched recently in a few neighborhoods in Dallas and is rapidly growing into a global phenomenon. Its unique style of hyper-local community communication and business outreach is in demand around the world.
Executive Statement -
We are the number one local community app; it's time to take our local community services global. Our venture capital investors want to see rapid growth and the same great experience for new local and virtual communities that come online, whether their members are 10 or 10000 miles away from each other.
Solution Concept -
HipLocal wants to expand their existing service, with updated functionality, in new regions to better serve their global customers. They want to hire and train a new team to support these regions in their time zones. They will need to ensure that the application scales smoothly and provides clear uptime data, and that they analyze and respond to any issues that occur.
Existing Technical Environment -
HipLocal's environment is a mix of on-premises hardware and infrastructure running in Google Cloud Platform. The HipLocal team understands their application well, but has limited experience in global scale applications. Their existing technical environment is as follows:
• Existing APIs run on Compute Engine virtual machine instances hosted in GCP.
• State is stored in a single instance MySQL database in GCP.
• Release cycles include development freezes to allow for QA testing.
• The application has no logging.
• Applications are manually deployed by infrastructure engineers during periods of slow traffic on weekday evenings.
• There are basic indicators of uptime; alerts are frequently fired when the APIs are unresponsive.
Business Requirements -
HipLocal's investors want to expand their footprint and support the increase in demand they are seeing. Their requirements are:
• Expand availability of the application to new regions.
• Support 10x as many concurrent users.
• Ensure a consistent experience for users when they travel to different regions.
• Obtain user activity metrics to better understand how to monetize their product.
• Ensure compliance with regulations in the new regions (for example, GDPR).
• Reduce infrastructure management time and cost.
• Adopt the Google-recommended practices for cloud computing.
○ Develop standardized workflows and processes around application lifecycle management.
○ Define service level indicators (SLIs) and service level objectives (SLOs).
Technical Requirements -
• Provide secure communications between the on-premises data center and cloud-hosted applications and infrastructure.
• The application must provide usage metrics and monitoring.
• APIs require authentication and authorization.
• Implement faster and more accurate validation of new features.
• Logging and performance metrics must provide actionable information to be able to provide debugging information and alerts.
• Must scale to meet user demand.
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?
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.
Question 170
You are in the final stage of migrating an on-premises data center to Google Cloud. You are quickly approaching your deadline, and discover that a web API is running on a server slated for decommissioning. You need to recommend a solution to modernize this API while migrating to Google Cloud. The modernized web API must meet the following requirements:
• Autoscales during high traffic periods at the end of each month
• Written in Python 3.x
• Developers must be able to rapidly deploy new versions in response to frequent code changes
You want to minimize cost, effort, and operational overhead of this migration. What should you do?
A. Modernize and deploy the code on App Engine flexible environment.
B. Modernize and deploy the code on App Engine standard environment.
C. Deploy the modernized application to an n1-standard-1 Compute Engine instance.
D. Ask the development team to re-write the application to run as a Docker container on Google Kubernetes Engine.
