Google Google Certifications ASSOCIATE-CLOUD-ENGINEER Questions & Answers

• Question 171:

  You have an application running in Google Kubernetes Engine (GKE) with cluster autoscaling enabled. The application exposes a TCP endpoint. There are several replicas of this application. You have a Compute Engine instance in the same region, but in another Virtual Private Cloud (VPC), called gce-network, that has no overlapping IP ranges with the first VPC. This instance needs to connect to the application on GKE. You want to minimize effort. What should you do?

  A. 1. In GKE, create a Service of type LoadBalancer that uses the application's Pods as backend.

  2.

  Set the service's externalTrafficPolicy to Cluster.

  3.

  Configure the Compute Engine instance to use the address of the load balancer that has been created.

  B. 1. In GKE, create a Service of type NodePort that uses the application's Pods as backend.

  2.

  Create a Compute Engine instance called proxy with 2 network interfaces, one in each VPC.

  3.

  Use iptables on this instance to forward traffic from gce-network to the GKE nodes.

  4.

  Configure the Compute Engine instance to use the address of proxy in gce-network as endpoint.

  C. 1. In GKE, create a Service of type LoadBalancer that uses the application's Pods as backend.

  2.

  Add an annotation to this service: cloud.google.com/load-balancer-type: Internal

  3.

  Peer the two VPCs together.

  4.

  Configure the Compute Engine instance to use the address of the load balancer that has been created.

  D. 1. In GKE, create a Service of type LoadBalancer that uses the application's Pods as backend.

  2.

  Add a Cloud Armor Security Policy to the load balancer that whitelists the internal IPs of the MIG's instances.

  3.

  Configure the Compute Engine instance to use the address of the load balancer that has been created.

  Correct Answer: A

  It's never mentioned in the question that traffic cannot go through the Internet but it's mentioned that effort should be minimized. A requires a lot less effort than C to accomplish the same (no VPC peering, per example).

• Question 172:

  Your projects incurred more costs than you expected last month. Your research reveals that a development GKE container emitted a huge number of logs, which resulted in higher costs. You want to disable the logs quickly using the minimum number of steps. What should you do?

  A. 1. Go to the Logs ingestion window in Stackdriver Logging, and disable the log source for the GKE container resource.

  B. 1. Go to the Logs ingestion window in Stackdriver Logging, and disable the log source for the GKE Cluster Operations resource.

  C. 1. Go to the GKE console, and delete existing clusters.

  2.

  Recreate a new cluster.

  3.

  Clear the option to enable legacy Stackdriver Logging.

  D. 1. Go to the GKE console, and delete existing clusters.

  2.

  Recreate a new cluster.

  3.

  Clear the option to enable legacy Stackdriver Monitoring.

  Correct Answer: A

  https://cloud.google.com/logging/docs/api/v2/resource-list

  GKE Containers have more log than GKE Cluster Operations:

  .-GKE Containe:

  cluster_name: An immutable name for the cluster the container is running in.

  namespace_id: Immutable ID of the cluster namespace the container is running in.

  instance_id: Immutable ID of the GCE instance the container is running in.

  pod_id: Immutable ID of the pod the container is running in.

  container_name: Immutable name of the container.

  zone: The GCE zone in which the instance is running.

  VS

  .-GKE Cluster Operations

  project_id: The identifier of the GCP project associated with this resource, such as "my-project".

  cluster_name: The name of the GKE Cluster.

  location: The location in which the GKE Cluster is running.

• Question 173:

  You have a website hosted on App Engine standard environment. You want 1% of your users to see a new test version of the website. You want to minimize complexity. What should you do?

  A. Deploy the new version in the same application and use the --migrate option.

  B. Deploy the new version in the same application and use the --splits option to give a weight of 99 to the current version and a weight of 1 to the new version.

  C. Create a new App Engine application in the same project. Deploy the new version in that application. Use the App Engine library to proxy 1% of the requests to the new version.

  D. Create a new App Engine application in the same project. Deploy the new version in that application. Configure your network load balancer to send 1% of the traffic to that new application.

  Correct Answer: B

  B is the correct answer as there is only one app engine can be created per project

• Question 174:

  You are given a project with a single virtual private cloud (VPC) and a single subnetwork in the us-central1 region. There is a Compute Engine instance hosting an application in this subnetwork. You need to deploy a new instance in the same project in the europe-west1 region. This new instance needs access to the application. You want to follow Google-recommended practices. What should you do?

  A. 1. Create a subnetwork in the same VPC, in europe-west1.

  2. Create the new instance in the new subnetwork and use the first instance's private address as the endpoint.

  B. 1. Create a VPC and a subnetwork in europe-west1.

  2.

  Expose the application with an internal load balancer.

  3.

  Create the new instance in the new subnetwork and use the load balancer's address as the endpoint.

  C. 1. Create a subnetwork in the same VPC, in europe-west1.

  2.

  Use Cloud VPN to connect the two subnetworks.

  3.

  Create the new instance in the new subnetwork and use the first instance's private address as the endpoint.

  D. 1. Create a VPC and a subnetwork in europe-west1.

  2.

  Peer the 2 VPCs.

  3.

  Create the new instance in the new subnetwork and use the first instance's private address as the endpoint.

  Correct Answer: A

  VPC allows you to spawn multiple subnets in different zones. Routing is handled automatically (because Routers are created automatically).

  "use the first instance's private address as the endpoint" means that this new instance will be accessing the app via first intance's private IP (so there should be some routing rules created). Question says: "This new instance needs access to the application."

• Question 175:

  Your company has a Google Cloud Platform project that uses BigQuery for data warehousing. Your data science team changes frequently and has few members. You need to allow members of this team to perform queries. You want to follow Google-recommended practices. What should you do?

  A. 1. Create an IAM entry for each data scientist's user account.

  2. Assign the BigQuery jobUser role to the group.

  B. 1. Create an IAM entry for each data scientist's user account.

  2. Assign the BigQuery dataViewer user role to the group.

  C. 1. Create a dedicated Google group in Cloud Identity.

  2.

  Add each data scientist's user account to the group.

  3.

  Assign the BigQuery jobUser role to the group.

  D. 1. Create a dedicated Google group in Cloud Identity.

  2.

  Add each data scientist's user account to the group.

  3.

  Assign the BigQuery dataViewer user role to the group.

  Correct Answer: C

  jobUser allows running queries.

  dataViewer does not allow running queries.

  Read the documentation: https://cloud.google.com/bigquery/docs/access-control#bigquery.jobUser

• Question 176:

  Your company has a 3-tier solution running on Compute Engine. The configuration of the current infrastructure is shown below.

  

  Each tier has a service account that is associated with all instances within it. You need to enable communication on TCP port 8080 between tiers as follows:

  1.

  Instances in tier #1 must communicate with tier #2.

  2.

  Instances in tier #2 must communicate with tier #3.

  What should you do?

  A. 1. Create an ingress firewall rule with the following settings: Targets: all instances Source filter: IP ranges (with the range set to 10.0.2.0/24) Protocols: allow all

  2. Create an ingress firewall rule with the following settings:

  Targets: all instances

  Source filter: IP ranges (with the range set to 10.0.1.0/24)

  Protocols: allow all

  B. 1. Create an ingress firewall rule with the following settings: Targets: all instances with tier #2 service account Source filter: all instances with tier #1 service account Protocols: allow TCP:8080

  2. Create an ingress firewall rule with the following settings:

  Targets: all instances with tier #3 service account

  Source filter: all instances with tier #2 service account

  Protocols: allow TCP: 8080

  C. 1. Create an ingress firewall rule with the following settings: Targets: all instances with tier #2 service account Source filter: all instances with tier #1 service account Protocols: allow all

  2. Create an ingress firewall rule with the following settings:

  Targets: all instances with tier #3 service account

  Source filter: all instances with tier #2 service account

  Protocols: allow all

  D. 1. Create an egress firewall rule with the following settings: Targets: all instances Source filter: IP ranges (with the range set to 10.0.2.0/24) Protocols: allow TCP: 8080

  2. Create an egress firewall rule with the following settings:

  Targets: all instances

  Source filter: IP ranges (with the range set to 10.0.1.0/24)

  Protocols: allow TCP: 8080

  Correct Answer: B

  This question is designed to waste your time during the exam by making you read all those long answers. Remember that part of exam technique is not about knowing the product at all, but understanding multiple choice questions.

  For example when two answers are very similar to each other, this can increase the likelihood that the correct answer is one of those two.

  In this case it's an easy process of elimination as all answers are similar, we just need to filter out the wrong ones (and whacking the wrong answer in an exam is sometimes the best way to find the right one).

  Two answers mention port 8080, and two mention all ports. Obviously we just need port 8080, so we can immediately eliminate those two questions that want all ports open. That gives us a 50/50 chance of getting this question right.

  Of the remaining answers, one says "ingress" and the other "egress". We know that by default egress is permitted and ingress is not, so that makes "B" the only surviving choice.

• Question 177:

  You have a virtual machine that is currently configured with 2 vCPUs and 4 GB of memory. It is running out of memory. You want to upgrade the virtual machine to have 8 GB of memory. What should you do?

  A. Rely on live migration to move the workload to a machine with more memory.

  B. Use gcloud to add metadata to the VM. Set the key to required-memory-size and the value to 8 GB.

  C. Stop the VM, change the machine type to n1-standard-8, and start the VM.

  D. Stop the VM, increase the memory to 8 GB, and start the VM.

  Correct Answer: D

  Stop the VM, increase the memory to 8 GB, and start the VM.

• Question 178:

  You have production and test workloads that you want to deploy on Compute Engine. Production VMs need to be in a different subnet than the test VMs. All the VMs must be able to reach each other over Internal IP without creating additional routes. You need to set up VPC and the 2 subnets. Which configuration meets these requirements?

  A. Create a single custom VPC with 2 subnets. Create each subnet in a different region and with a different CIDR range.

  B. Create a single custom VPC with 2 subnets. Create each subnet in the same region and with the same CIDR range.

  C. Create 2 custom VPCs, each with a single subnet. Create each subnet in a different region and with a different CIDR range.

  D. Create 2 custom VPCs, each with a single subnet. Create each subnet in the same region and with the same CIDR range.

  Correct Answer: A

  https://cloud.google.com/vpc/docs/using-vpc#subnet-rules

  Primary and secondary ranges for subnets cannot overlap with any allocated range, any primary or secondary range of another subnet in the same network, or any IP ranges of subnets in peered networks.

• Question 179:

  You need to create an autoscaling managed instance group for an HTTPS web application. You want to make sure that unhealthy VMs are recreated. What should you do?

  A. Create a health check on port 443 and use that when creating the Managed Instance Group.

  B. Select Multi-Zone instead of Single-Zone when creating the Managed Instance Group.

  C. In the Instance Template, add the label `health-check'.

  D. In the Instance Template, add a startup script that sends a heartbeat to the metadata server.

  Correct Answer: A

  MIGs support autohealing, load balancing, autoscaling, and auto-updating. no the Images templates, this is set up in the MIG

• Question 180:

  You deployed an App Engine application using gcloud app deploy, but it did not deploy to the intended project. You want to find out why this happened and where the application deployed. What should you do?

  A. Check the app.yaml file for your application and check project settings.

  B. Check the web-application.xml file for your application and check project settings.

  C. Go to Deployment Manager and review settings for deployment of applications.

  D. Go to Cloud Shell and run gcloud config list to review the Google Cloud configuration used for deployment.

  Correct Answer: D

  check project setting by gcloud config list