Free Exam AZ-900: Microsoft Azure Fundamentals Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Exam AZ-900: Microsoft Azure Fundamentals practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1How does Microsoft define the delivery model known as cloud computing?

   1. A. Delivering computing services over the internet
   2. B. Running computing services only in an on-site datacenter
   3. C. Purchasing physical servers before each workload begins
   4. D. Providing computing services only through local networks

   Answer: A

   Explanation: Microsoft defines cloud computing as "the delivery of computing services over the internet." This distinguishes the delivery model from running or purchasing only local infrastructure.

   Reference: What is cloud computing — What is cloud computing, opening paragraph

2. 2What does an Azure region represent in Microsoft's physical cloud infrastructure?

   1. A. A geographic area containing nearby networked datacenters
   2. B. A single resource group containing all customer resources
   3. C. A billing account spanning every Azure subscription
   4. D. A set of user identities in one directory

   Answer: A

   Explanation: Microsoft defines a region as "a geographical area on the planet that contains at least one, but potentially multiple datacenters that are nearby and networked together with a low-latency network." It is a physical deployment location.

   Reference: Describe Azure physical infrastructure — Regions

3. 3Why can the same Azure resource cost different amounts in different regions?

   1. A. Regional power, labor, taxes, and fees can vary
   2. B. Resource groups are nested by region
   3. C. All regions use a single fixed global price
   4. D. Subscriptions stop recording usage outside one region

   Answer: A

   Explanation: Microsoft says, "The cost of power, labor, taxes, and fees vary depending on the location." These differences can affect deployment cost by region.

   Reference: Describe factors that can affect costs in Azure — Geography

4. 4A company uses a cloud-hosted SQL database. Which statement correctly applies the shared responsibility model to data entered into it?

   1. A. The cloud provider becomes responsible for all entered data because it hosts SQL.
   2. B. The company remains responsible for the data it enters into the database.
   3. C. The cloud provider becomes responsible for data when it patches the database.
   4. D. The company is responsible only when it runs SQL on its own servers.

   Answer: B

   Explanation: The customer retains this responsibility even for a cloud-hosted database: "However, you’re still responsible for the data that gets ingested into the database." Hosting or patching the service does not transfer responsibility for customer data.

   Reference: Describe the shared responsibility model — How responsibilities shift in cloud, cloud SQL database example

5. 5Which Azure infrastructure component is a facility containing server racks and dedicated power, cooling, and networking?

   1. A. Datacenter
   2. B. Subscription
   3. C. Resource group
   4. D. Management group

   Answer: A

   Explanation: The physical-infrastructure unit says datacenters are "facilities with servers arranged in racks, with dedicated power, cooling, and networking infrastructure". Other options are management constructs.

   Reference: Describe Azure physical infrastructure — Physical infrastructure

6. 6For two Azure virtual machines in the same region, which configuration difference can directly affect compute cost?

   1. A. Their processor and core counts
   2. B. Their resource group names
   3. C. Their assigned metadata tags
   4. D. Their display names in the portal

   Answer: A

   Explanation: The cost module says, "With a virtual machine (VM), you may have to consider licensing for the operating system or other software, the processor and number of cores for the VM". VM configuration affects price.

   Reference: Describe factors that can affect costs in Azure — Resource type, VM examples

7. 7In a cloud deployment, which component is always the cloud provider's responsibility?

   1. A. Customer data classification
   2. B. User account assignment
   3. C. The physical datacenter
   4. D. Application access policies

   Answer: C

   Explanation: Under "What the provider always owns," Microsoft lists "The physical datacenter." The other options concern customer data or access responsibilities.

   Reference: Describe the shared responsibility model — What the provider always owns

8. 8What does an availability zone represent within a single Azure region?

   1. A. A physically separate datacenter grouping within a region
   2. B. A subscription used for separate billing
   3. C. A paired region in another geography
   4. D. A collection of Azure user accounts

   Answer: A

   Explanation: Microsoft states, "Availability zones are physically separate datacenters within an Azure region." They are fault-isolation locations within a region.

   Reference: Describe Azure physical infrastructure — Availability Zones

9. 9What determines Azure outbound data-transfer pricing in the cost module?

   1. A. Billing zones for data leaving datacenters
   2. B. Only the virtual machine's OS
   3. C. Only the number of resource tags
   4. D. Only the Azure account name

   Answer: A

   Explanation: Microsoft states, "For outbound data transfers (data leaving Azure datacenters), data transfer pricing is based on zones." These billing zones are geographic groupings.

   Reference: Describe factors that can affect costs in Azure — Geography, Network traffic

10. 10Which cloud model combines interconnected public and private cloud environments?

    1. A. Public cloud
    2. B. Private cloud
    3. C. Hybrid cloud
    4. D. Multicloud

    Answer: C

    Explanation: Microsoft states, "A hybrid cloud is a computing environment that uses both public and private clouds in an inter-connected environment." Multicloud instead involves multiple public cloud providers.

    Reference: Define cloud models — Hybrid cloud