How to Ace the AZ-900: Azure Fundamentals

Question 1 · Describe cloud concepts

Your organization currently maintains on-premises servers for internal applications. You want to migrate to a cloud solution that provides the most control over infrastructure while leveraging cloud benefits. Which cloud model should you choose?

• Public cloud
• Private cloud
• Hybrid cloud
• Community cloud

Correct answer: Private cloud

A private cloud provides maximum control over infrastructure while still offering cloud benefits like scalability and on-demand resources. Public cloud shares resources among multiple tenants with less control, while hybrid cloud combines both but isn't the only option for maximum control. Private clouds are ideal for organizations needing dedicated infrastructure.

Question 2 · Describe Azure architecture and services

Your organization is deploying a mission-critical application and needs protection against both datacenter-level failures and regional outages. Which provides the highest redundancy?

• Deploying VMs across several regions but without using any availability zones at all
• Deploying VMs across multiple availability zones with backup in a paired region
• Deploying VMs in an availability set confined to one datacenter inside a single region
• Deploying all VMs into a single availability zone within one chosen datacenter location

Correct answer: Deploying VMs across multiple availability zones with backup in a paired region

Multi-zone deployment within a region protects against datacenter failures, and paired regions provide protection against regional outages.

Question 3 · Describe Azure management and governance

Which of the following is a factor that can affect costs in Azure?

• The region where resources are deployed
• The operating system used locally on your computer
• The color of your office furniture
• The number of employees in your company

Correct answer: The region where resources are deployed

The Azure region where you deploy resources directly impacts costs, as pricing varies by geographic location due to infrastructure and operational costs in different regions.

Question 4 · Describe cloud concepts

A startup company wants to launch a new web application but wants to minimize upfront infrastructure costs and only pay for resources actually used. Which cloud concept best addresses this requirement?

• Dedicated host pricing that locks in physical capacity
• Fixed monthly subscription billed regardless of usage
• Reserved capacity purchased one to three years in advance
• Consumption-based pricing model

Correct answer: Consumption-based pricing model

The consumption-based model charges only for resources used, with no upfront costs or long-term commitments. This is ideal for startups with variable workloads. Fixed pricing requires upfront commitment, reserved capacity requires advance commitment, and dedicated host pricing locks in capacity regardless of usage.

Question 5 · Describe cloud concepts

Your company operates critical financial systems that must comply with strict data sovereignty laws requiring data to remain within specific geographic boundaries. Which cloud deployment model is most appropriate?

• Public cloud with geo-redundancy
• Private cloud within specific regions
• Hybrid cloud with on-premises data storage
• Public cloud multi-region deployment

Correct answer: Private cloud within specific regions

A private cloud gives your organization direct control over data location and can be deployed within specific geographic boundaries to meet data sovereignty requirements. While hybrid clouds can also address this, private cloud provides the most direct control. Public cloud deployments, even with geo-redundancy, involve shared infrastructure and potential data movement.