Google Professional Cloud Architect Exam Practice Test Instant Access

Question 1

You set up an autoscaling instance group to serve web traffic for an upcoming launch. After configuring the instance group as a backend service to an HTTP(S) load balancer, you notice that virtual machine (VM) instances are being terminated and re-launched every minute. The instances do not have a public IP address. You have verified the appropriate web response is coming from each instance using the curl command. You want to ensure the backend is configured correctly. What should you do?

AEnsure that a firewall rule exists to allow source traffic on HTTP/HTTPS to reach the load balancer.

BAssign a public IP to each instance and configure a firewall rule to allow the load balancer to reach the instance public IP.

CEnsure that a firewall rule exists to allow load balancer health checks to reach the instances in the instance group.

DCreate a tag on each instance with the name of the load balancer. Configure a firewall rule with the name of the load balancer as the source and the instance tag as the destination.

Answer : C

https://cloud.google.com/vpc/docs/using-firewalls

The best practice when configuration a health check is to check health and serve traffic on the same port. However, it is possible to perform health checks on one port, but serve traffic on another. If you do use two different ports, ensure that firewall rules and services running on instances are configured appropriately. If you run health checks and serve traffic on the same port, but decide to switch ports at some point, be sure to update both the backend service and the health check.

Backend services that do not have a valid global forwarding rule referencing it will not be health checked and will have no health status.

Question 2

The database administration team has asked you to help them improve the performance of their new database server running on Google Compute Engine. The database is for importing and normalizing their performance statistics and is built with MySQL running on Debian Linux. They have an n1-standard-8 virtual machine with 80 GB of SSD persistent disk. What should they change to get better performance from this system?

AIncrease the virtual machine's memory to 64 GB.

BCreate a new virtual machine running PostgreSQL.

CDynamically resize the SSD persistent disk to 500 GB.

DMigrate their performance metrics warehouse to BigQuery.

EModify all of their batch jobs to use bulk inserts into the database.

Answer : C

Question 3

Your development team has created a mobile game app. You want to test the new mobile app on Android and

iOS devices with a variety of configurations. You need to ensure that testing is efficient and cost-effective. What

should you do?

AUpload your mobile app to the Firebase Test Lab, and test the mobile app on Android and iOS devices.

BCreate Android and iOS VMs on Google Cloud, install the mobile app on the VMs, and test the mobile app.

CCreate Android and iOS containers on Google Kubernetes Engine (GKE), install the mobile app on the
containers, and test the mobile app.

DUpload your mobile app with different configurations to Firebase Hosting and test each configuration.

Answer : C

Question 4

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.

Answer : D

https://cloud.google.com/compute/docs/ip-addresses/reserve-static-external-ip-address#disableexternalip

you might want to restrict external IP address so that only specific VM instances can use them. This option can help to prevent data exfiltration or maintain network isolation. Using an Organization Policy, you can restrict external IP addresses to specific VM instances with constraints to control use of external IP addresses for your VM instances within an organization or a project.

Question 5

For this question, refer to the Mountkirk Games case study.

Mountkirk Games' gaming servers are not automatically scaling properly. Last month, they rolled out a new feature, which suddenly became very popular. A record number of users are trying to use the service, but many of them are getting 503 errors and very slow response times. What should they investigate first?

AVerify that the database is online.

BVerify that the project quota hasn't been exceeded.

CVerify that the new feature code did not introduce any performance bugs.

DVerify that the load-testing team is not running their tool against production.

Answer : B

503 is service unavailable error. If the database was online everyone would get the 503 error.

https://cloud.google.com/docs/quota#capping_usage

Question 6

A small number of API requests to your microservices-based application take a very long time. You know that each request to the API can traverse many services. You want to know which service takes the longest in those cases. What should you do?

ASet timeouts on your application so that you can fail requests faster.

BSend custom metrics for each of your requests to Stackdriver Monitoring.

CUse Stackdriver Monitoring to look for insights that show when your API latencies are high.

DInstrument your application with Stackdnver Trace in order to break down the request latencies at each microservice.

Answer : D

https://cloud.google.com/trace/docs/overview

Question 7

The current Dress4win system architecture has high latency to some customers because it is located in one

data center.

As of a future evaluation and optimizing for performance in the cloud, Dresss4win wants to distribute it's system

architecture to multiple locations when Google cloud platform.

Which approach should they use?

AUse regional managed instance groups and a global load balancer to increase performance because the
regional managed instance group can grow instances in each region separately based on traffic.

BUse a global load balancer with a set of virtual machines that forward the requests to a closer group of
virtual machines managed by your operations team.

CUse regional managed instance groups and a global load balancer to increase reliability by providing
automatic failover between zones in different regions.

DUse a global load balancer with a set of virtual machines that forward the requests to a closer group of
virtual machines as part of a separate managed instance groups.

Answer : A

Google Cloud Architect Professional Professional Cloud Architect Exam Practice Test