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NEW QUESTION 16
You support a high-traffic web application that runs on Google Cloud Platform (GCP). You need to measure application reliability from a user perspective without making any engineering changes to it. What should you do?
Choose 2 answers
- A. Use current and historic Request Logs to trace customer interaction with the application.
- B. Modify the code to capture additional information for user interaction.
- C. Create new synthetic clients to simulate a user journey using the application.
- D. Review current application metrics and add new ones as needed.
- E. Analyze the web proxy logs only and capture response time of each request.
Answer: B,C
NEW QUESTION 17
You support a high-traffic web application and want to ensure that the home page loads in a timely manner. As a first step, you decide to implement a Service Level Indicator (SLI) to represent home page request latency with an acceptable page load time set to 100 ms. What is the Google-recommended way of calculating this SLI?
- A. Count the number of home page requests that load in under 100 ms. and then divide by the total number of all web application requests.
- B. Count the number of home page requests that load in under 100 ms, and then divide by the total number of home page requests.
- C. Bucketize the request latencies into ranges, and then compute the median and 90th percentiles.
- D. Buckelize Ihe request latencies into ranges, and then compute the percentile at 100 ms.
Answer: B
NEW QUESTION 18
You support a stateless web-based API that is deployed on a single Compute Engine instance in the europe-west2-a zone . The Service Level Indicator (SLI) for service availability is below the specified Service Level Objective (SLO). A postmortem has revealed that requests to the API regularly time out. The time outs are due to the API having a high number of requests and running out memory. You want to improve service availability. What should you do?
- A. Set up additional service instances in other zones and use them as a failover in case the primary instance is unavailable.
- B. Change the specified SLO to match the measured SLI.
- C. Set up additional service instances in other zones and load balance the traffic between all instances.
- D. Move the service to higher-specification compute instances with more memory.
Answer: C
NEW QUESTION 19
You use a multiple step Cloud Build pipeline to build and deploy your application to Google Kubernetes Engine (GKE). You want to integrate with a third-party monitoring platform by performing a HTTP POST of the build information to a webhook. You want to minimize the development effort. What should you do?
- A. Add logic to each Cloud Build step to HTTP POST the build information to a webhook.
- B. Use Stackdriver Logging to create a logs-based metric from the Cloud Buitd logs. Create an Alert with a Webhook notification type.
- C. Create a Cloud Pub/Sub push subscription to the Cloud Build cloud-builds PubSub topic to HTTP POST the build information to a webhook.
- D. Add a new step at the end of the pipeline in Cloud Build to HTTP POST the build information to a webhook.
Answer: D
NEW QUESTION 20
You are running an application in a virtual machine (VM) using a custom Debian image. The image has the Stackdriver Logging agent installed. The VM has the cloud-platform scope. The application is logging information via syslog. You want to use Stackdriver Logging in the Google Cloud Platform Console to visualize the logs. You notice that syslog is not showing up in the "All logs" dropdown list of the Logs Viewer. What is the first thing you should do?
- A. Install the most recent version of the Stackdriver agent.
- B. Look for the agent's test log entry in the Logs Viewer.
- C. Verify the VM service account access scope includes the monitoring.write scope.
- D. SSH to the VM and execute the following commands on your VM: ps ax I grep fluentd
Answer: D
NEW QUESTION 21
You have a pool of application servers running on Compute Engine. You need to provide a secure solution that requires the least amount of configuration and allows developers to easily access application logs for troubleshooting. How would you implement the solution on GCP?
- A. * Deploy the Stackdriver monitoring agent to the application servers.
* Give the developers the IAM Monitoring Viewer role to access Stackdriver and view metrics. - B. * Deploy the Stackdriver logging agent to the application servers.
* Give the developers the IAM Logs Viewer role to access Stackdriver and view logs. - C. * Deploy the Stackdriver logging agent to the application servers.
* Give the developers the IAM Logs Private Logs Viewer role to access Stackdriver and view logs. - D. * Install the gsutil command line tool on your application servers.
* Write a script using gsutil to upload your application log to a Cloud Storage bucket, and then schedule it to run via cron every 5 minutes.
* Give the developers IAM Object Viewer access to view the logs in the specified bucket.
Answer: C
NEW QUESTION 22
You are running a real-time gaming application on Compute Engine that has a production and testing environment. Each environment has their own Virtual Private Cloud (VPC) network. The application frontend and backend servers are located on different subnets in the environment's VPC. You suspect there is a malicious process communicating intermittently in your production frontend servers. You want to ensure that network traffic is captured for analysis. What should you do?
- A. Enable VPC Flow Logs on the testing and production VPC network frontend and backend subnets with a volume scale of 0.5. Apply changes in testing before production.
- B. Enable VPC Flow Logs on the production VPC network frontend and backend subnets only with a sample volume scale of 0.5.
- C. Enable VPC Flow Logs on the production VPC network frontend and backend subnets only with a sample volume scale of 1.0.
- D. Enable VPC Flow Logs on the testing and production VPC network frontend and backend subnets with a volume scale of 1.0. Apply changes in testing before production.
Answer: C
NEW QUESTION 23
You are performing a semiannual capacity planning exercise for your flagship service. You expect a service user growth rate of 10% month-over-month over the next six months. Your service is fully containerized and runs on Google Cloud Platform (GCP). using a Google Kubernetes Engine (GKE) Standard regional cluster on three zones with cluster autoscaler enabled. You currently consume about 30% of your total deployed CPU capacity, and you require resilience against the failure of a zone. You want to ensure that your users experience minimal negative impact as a result of this growth or as a result of zone failure, while avoiding unnecessary costs. How should you prepare to handle the predicted growth?
- A. Because you are at only 30% utilization, you have significant headroom and you won't need to add any additional capacity for this rate of growth.
- B. Proactively add 60% more node capacity to account for six months of 10% growth rate, and then perform a load test to make sure you have enough capacity.
- C. Because you are deployed on GKE and are using a cluster autoscaler. your GKE cluster will scale automatically, regardless of growth rate.
- D. Verity the maximum node pool size, enable a horizontal pod autoscaler, and then perform a load test to verity your expected resource needs.
Answer: C
NEW QUESTION 24
You support an e-commerce application that runs on a large Google Kubernetes Engine (GKE) cluster deployed on-premises and on Google Cloud Platform. The application consists of microservices that run in containers. You want to identify containers that are using the most CPU and memory. What should you do?
- A. Use the Stackdriver Monitoring API to create custom metrics, and then organize your containers using groups.
- B. Use Stackdriver Logging to export application logs to BigOuery. aggregate logs per container, and then analyze CPU and memory consumption.
- C. Use Stackdriver Kubernetes Engine Monitoring.
- D. Use Prometheus to collect and aggregate logs per container, and then analyze the results in Grafana.
Answer: D
NEW QUESTION 25
You need to run a business-critical workload on a fixed set of Compute Engine instances for several months. The workload is stable with the exact amount of resources allocated to it. You want to lower the costs for this workload without any performance implications. What should you do?
- A. Purchase Committed Use Discounts.
- B. Create an Unmanaged Instance Group for the instances used to run the workload.
- C. Convert the instances to preemptible virtual machines.
- D. Migrate the instances to a Managed Instance Group.
Answer: B
NEW QUESTION 26
You need to deploy a new service to production. The service needs to automatically scale using a Managed Instance Group (MIG) and should be deployed over multiple regions. The service needs a large number of resources for each instance and you need to plan for capacity. What should you do?
- A. Validate that the resource requirements are within the available quota limits of each region.
- B. Monitor results of Stackdriver Trace to determine the required amount of resources.
- C. Deploy the service in one region and use a global load balancer to route traffic to this region.
- D. Use the n1-highcpu-96 machine type in the configuration of the MIG.
Answer: C
NEW QUESTION 27
Your team has recently deployed an NGINX-based application into Google Kubernetes Engine (GKE) and has exposed it to the public via an HTTP Google Cloud Load Balancer (GCLB) ingress. You want to scale the deployment of the application's frontend using an appropriate Service Level Indicator (SLI). What should you do?
- A. Configure the horizontal pod autoscaler to use the average response time from the Liveness and Readiness probes.
- B. Expose the NGINX stats endpoint and configure the horizontal pod autoscaler to use the request metrics exposed by the NGINX deployment.
- C. Install the Stackdriver custom metrics adapter and configure a horizontal pod autoscaler to use the number of requests provided by the GCLB.
- D. Configure the vertical pod autoscaler in GKE and enable the cluster autoscaler to scale the cluster as pods expand.
Answer: B
NEW QUESTION 28
Your organization wants to implement Site Reliability Engineering (SRE) culture and principles. Recently, a service that you support had a limited outage. A manager on another team asks you to provide a formal explanation of what happened so they can action remediations. What should you do?
- A. Develop a postmortem that includes the root causes, resolution, lessons learned, the list of people responsible, and a list of action items for each person. Share it on the engineering organization's document portal.
- B. Develop a postmortem that includes the root causes, resolution, lessons learned, and a prioritized list of action items. Share it on the engineering organization's document portal.
- C. Develop a postmortem that includes the root causes, resolution, lessons learned, and a prioritized list of action items. Share it with the manager only.
- D. Develop a postmortem that includes the root causes, resolution, lessons learned, the list of people responsible, and a list of action items for each person. Share it with the manager only.
Answer: B
NEW QUESTION 29
You are managing an application that exposes an HTTP endpoint without using a load balancer. The latency of the HTTP responses is important for the user experience. You want to understand what HTTP latencies all of your users are experiencing. You use Stackdriver Monitoring. What should you do?
- A. In your application, create a metric with a metricKind set to DELTA and a valueType set to DOUBLE.
* In Stackdriver's Metrics Explorer, use a Slacked Bar graph to visualize the metric. - B. In your application, create a metric with a metricKind set to CUMULATIVE and a valueType set to DOUBLE.
* In Stackdriver's Metrics Explorer, use a Line graph to visualize the metric. - C. In your application, create a metric with a metricKind set to gauge and a valueType set to distribution.
* In Stackdriver's Metrics Explorer, use a Heatmap graph to visualize the metric. - D. In your application, create a metric with a metricKind. set toMETRlc_KIND_UNSPECIFIEDanda valueType set to INT64.
* In Stackdriver's Metrics Explorer, use a Stacked Area graph to visualize the metric.
Answer: B
NEW QUESTION 30
You need to reduce the cost of virtual machines (VM| for your organization. After reviewing different options, you decide to leverage preemptible VM instances. Which application is suitable for preemptible VMs?
- A. The organization's public-facing website
- B. A distributed, eventually consistent NoSQL database cluster with sufficient quorum
- C. A scalable in-memory caching system
- D. A GPU-accelerated video rendering platform that retrieves and stores videos in a storage bucket
Answer: D
NEW QUESTION 31
Your application services run in Google Kubernetes Engine (GKE). You want to make sure that only images from your centrally-managed Google Container Registry (GCR) image registry in the altostrat-images project can be deployed to the cluster while minimizing development time. What should you do?
- A. Use a Binary Authorization policy that includes the whitelist name pattern gcr.io/altostrat-images/.
- B. Add logic to the deployment pipeline to check that all manifests contain only images from gcr.io/altostrat- images.
- C. Add a tag to each image in gcr.io/altostrat-images and check that this tag is present when the image is deployed.
- D. Create a custom builder for Cloud Build that will only push images to gcr.io/altostrat-images.
Answer: C
NEW QUESTION 32
You support the backend of a mobile phone game that runs on a Google Kubernetes Engine (GKE) cluster. The application is serving HTTP requests from users. You need to implement a solution that will reduce the network cost. What should you do?
- A. Configure your Kubernetes cluster as a Private Cluster.
- B. Configure a Google Cloud HTTP Load Balancer as Ingress.
- C. Configure the VPC as a Shared VPC Host project.
- D. Configure your network services on the Standard Tier.
Answer: C
NEW QUESTION 33
You deploy a new release of an internal application during a weekend maintenance window when there is minimal user traffic. After the window ends, you learn that one of the new features isn't working as expected in the production environment. After an extended outage, you roll back the new release and deploy a fix. You want to modify your release process to reduce the mean time to recovery so you can avoid extended outages in the future. What should you do?
Choose 2 answers
- A. Before merging new code, require 2 different peers to review the code changes.
- B. Configure a CI server. Add a suite of unit tests to your code and have your CI server run them on commit and verify any changes.
- C. Adopt the blue/green deployment strategy when releasing new code via a CD server.
- D. Require developers to run automated integration tests on their local development environments before release.
- E. Integrate a code linting tool to validate coding standards before any code is accepted into the repository.
Answer: A,E
NEW QUESTION 34
You are on-call for an infrastructure service that has a large number of dependent systems. You receive an alert indicating that the service is failing to serve most of its requests and all of its dependent systems with hundreds of thousands of users are affected. As part of your Site Reliability Engineering (SRE) incident management protocol, you declare yourself Incident Commander (IC) and pull in two experienced people from your team as Operations Lead (OLJ and Communications Lead (CL). What should you do next?
- A. Start a postmortem, add incident information, circulate the draft internally, and ask internal stakeholders for input.
- B. Establish a communication channel where incident responders and leads can communicate with each other.
- C. Contact the affected service owners and update them on the status of the incident.
- D. Look for ways to mitigate user impact and deploy the mitigations to production.
Answer: B
NEW QUESTION 35
You are part of an organization that follows SRE practices and principles. You are taking over the management of a new service from the Development Team, and you conduct a Production Readiness Review (PRR). After the PRR analysis phase, you determine that the service cannot currently meet its Service Level Objectives (SLOs). You want to ensure that the service can meet its SLOs in production. What should you do next?
- A. djust the SLO targets to be achievable by the service so you can bring it into production.
- B. Notify the development team that they will have to provide production support for the service.
- C. Identify recommended reliability improvements to the service to be completed before handover.
- D. Bring the service into production with no SLOs and build them when you have collected operational data.
Answer: C
NEW QUESTION 36
You support a multi-region web service running on Google Kubernetes Engine (GKE) behind a Global HTTP'S Cloud Load Balancer (CLB). For legacy reasons, user requests first go through a third-party Content Delivery Network (CDN). which then routes traffic to the CLB. You have already implemented an availability Service Level Indicator (SLI) at the CLB level. However, you want to increase coverage in case of a potential load balancer misconfiguration. CDN failure, or other global networking catastrophe. Where should you measure this new SLI?
Choose 2 answers
- A. Metrics exported from the application servers
- B. Instrumentation coded directly in the client
- C. Your application servers' logs
- D. A synthetic client that periodically sends simulated user requests
- E. GKE health checks for your application servers
Answer: D,E
NEW QUESTION 37
Your team has recently deployed an NGINX-based application into Google Kubernetes Engine (GKE) and has exposed it to the public via an HTTP Google Cloud Load Balancer (GCLB) ingress. You want to scale the deployment of the application's frontend using an appropriate Service Level Indicator (SLI). What should you do?
- A. Configure the horizontal pod autoscaler to use the average response time from the Liveness and Readiness probes.
- B. Expose the NGINX stats endpoint and configure the horizontal pod autoscaler to use the request metrics exposed by the NGINX deployment.
- C. Configure the vertical pod autoscaler in GKE and enable the cluster autoscaler to scale the cluster as pods expand.
- D. Install the Stackdriver custom metrics adapter and configure a horizontal pod autoscaler to use the number of requests provided by the GCLB.
Answer: C
NEW QUESTION 38
You encountered a major service outage that affected all users of the service for multiple hours. After several hours of incident management, the service returned to normal, and user access was restored. You need to provide an incident summary to relevant stakeholders following the Site Reliability Engineering recommended practices. What should you do first?
- A. Develop a post-mortem to be distributed to stakeholders.
- B. Require the engineer responsible to write an apology email to all stakeholders.
- C. Send the Incident State Document to all the stakeholders.
- D. Call individual stakeholders lo explain what happened.
Answer: C
NEW QUESTION 39
You support a high-traffic web application that runs on Google Cloud Platform (GCP). You need measure application reliability from a user perspective without making any engineering changes to it. What should you do? (Choose two.)
- A. Use current and historic Request Logs to trace customer interaction with the application.
- B. Modify the code to capture additional information for user interaction.
- C. Create new synthetic clients to simulate a user journey using the application.
- D. Review current application metrics and add new ones as needed.
- E. Analyze the web proxy logs only and capture response time of each request.
Answer: B,C
NEW QUESTION 40
You support a high-traffic web application with a microservice architecture. The home page of the application displays multiple widgets containing content such as the current weather, stock prices, and news headlines. The main serving thread makes a call to a dedicated microservice for each widget and then lays out the homepage for the user. The microservices occasionally fail; when that happens, the serving thread serves the homepage with some missing content. Users of the application are unhappy if this degraded mode occurs too frequently, but they would rather have some content served instead of no content at all. You want to set a Service Level Objective (SLO) to ensure that the user experience does not degrade too much. What Service Level Indicator {SLI) should you use to measure this?
- A. A freshness SLI: the proportion of widgets that have been updated within the last 10 minutes
- B. A latency SLI: the ratio of microservice calls that complete in under 100 ms to the total number of microservice calls
- C. A quality SLI: the ratio of non-degraded responses to total responses
- D. An availability SLI: the ratio of healthy microservices to the total number of microservices
Answer: D
NEW QUESTION 41
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