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Virtual Machines :Essential Google Cloud Infrastructure: Foundation (Preparing for Google Cloud Certification: Cloud Architect Professional Certificate) Answers 2025

Question 1

Which statement is true of Virtual Machine Instances in Compute Engine?

❌ A VM always maps to a single hardware computer.
❌ Compute Engine uses VMware.
❌ All VMs are single tenancy.
🟩 In Compute Engine, a VM is a networked service that simulates the features of a computer.

Explanation:

Compute Engine VMs are virtualized services, not tied to single hardware, not using VMware, and not single-tenant by default.


Question 2

What are sustained use discounts?

❌ Purchase commitments for specific resources
🟩 Automatic discounts for running VMs for a significant portion of the billing month
❌ Discounts for preemptible VMs
❌ Per-second billing feature

Explanation:

Sustained use discounts apply automatically as your VM runs longerβ€”no commitment needed.


Question 3

Which statement is true of persistent disks?

❌ Always HDDs
❌ Physical hardware directly attached
❌ Cannot be resized
🟩 Persistent disks are encrypted by default.

Explanation:

Google Cloud encrypts all persistent disks by default, using Google-managed keys unless you choose customer-managed keys.


🧾 Summary Table

Q# Correct Answer Key Concept
1 VM is a networked virtual service Compute Engine virtual machine behavior
2 Automatic discounts for long-running VMs Sustained use discount definition
3 Persistent disks are encrypted by default GCP storage security