Google Professional-Cloud-Architect Exam Dumps

https://cloud.google.com/iap/docs/using-tcp-forwarding#tunneling_with_ssh

Leveraging the BeyondCorp security model. 'This January, we enhanced context-aware access capabilities in Cloud Identity-Aware Proxy (IAP) to help you protect SSH and RDP access to your virtual machines (VMs)---without needing to provide your VMs with public IP addresses, and without having to set up bastion hosts. ' https://cloud.google.com/blog/products/identity-security/cloud-iap-enables-context-aware-access-to-vms-via-ssh-and-rdp-without-bastion-hosts

For batch processing workloads that are 'not time-sensitive' and 'can tolerate interruptions,' Spot VMs (formerly Preemptible VMs) are the Google-recommended best practice for cost optimization. Spot VMs offer the same performance as standard VMs (including support for GPUs and TPUs) at a discount of up to 91%.

However, because Spot VMs can be reclaimed by Google Cloud at any time, the architecture must be fault-tolerant. According to Vertex AI and Compute Engine best practices, using Persistent Disks (rather than Local SSDs, which are wiped upon VM termination) ensures that data is not lost when an instance is preempted. By implementing a checkpointing mechanism, the AI model periodically saves its state (weights, processed image metadata, etc.) to the persistent disk. When a new Spot VM is automatically provisioned by a Managed Instance Group to replace the preempted one, the application can resume from the last saved checkpoint rather than starting from the beginning.

Option C is less ideal because Local SSD data does not persist through preemption/reclamation cycles. Option B uses standard VMs, which fails the requirement for 'cost-effective' deployment. Option D perfectly balances the extreme cost savings of Spot provisioning with the reliability requirements of large-scale batch image processing.

https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/

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.

Security best practices in Google Cloud dictate that you should avoid static JSON keys at all costs.

Impersonation: By using Service Account Impersonation (Option D), the Cloud Build service account 'acts as' a more privileged Terraform service account only during the build. This uses short-lived tokens that expire automatically.

Governance: Running terraform plan on a pull request allows peers to review the exact changes before they happen. Requiring a manual approval step for terraform apply ensures that a human gatekeeper validates the change before it impacts the production environment.