Practice for the Microsoft Azure Fundamentals (AZ-900) exam with 15 exam-style practice questions, instant answer reveals, and concise explanations of every correct answer. Topics include: Which of the following is an example of a serverless computing service?. Follow @CertPunch and visit certpunch.com for more certification practice exams and study content.
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What you will practice
- Which of the following is an example of a serverless computing service?
- Your company runs most of its data and applications on-premises and only uses the cloud when it needs to temp…
- Queue storage can be used when two programs need to communicate. Which type of communication is this best sui…
- What is the primary purpose of Microsoft Entra Conditional Access?
- By design, when an entire Azure region fails as it may during a natural disaster in that region, where do som…
- What is the primary benefit of using containers for deploying applications to Azure?
Answers and explanations
Tap a question to expand the answer and the exam reasoning. Try to commit to your own pick first.
Q1. Which of the following is an example of a serverless computing service?
Answer: B. Azure Functions
Azure Functions is a serverless compute service that lets you run event-triggered code without explicitly provisioning infrastructure. Virtual Machines require operating system management, and App Service is a platform as a service, making neither truly serverless.
Q2. Your company runs most of its data and applications on-premises and only uses the cloud when it needs to temporarily scale for more resources. For instance, it has 18 virtualized servers running in its own datacenter and can scale up to an…
Answer: B. Hybrid Cloud
This scenario describes a hybrid cloud because it integrates on-premises infrastructure with public cloud resources. The temporary scaling into Azure specifically demonstrates the cloud bursting pattern commonly tested in fundamentals.
Q3. Queue storage can be used when two programs need to communicate. Which type of communication is this best suited for?
Answer: D. Asynchronous communication
Azure Queue Storage is designed for asynchronous communication, allowing decoupled applications to exchange messages without waiting for immediate responses. Synchronous options fail here because queues intentionally buffer messages until a receiver is ready.
Q4. What is the primary purpose of Microsoft Entra Conditional Access?
Answer: C. To implement granular access controls based on specific conditions.
Conditional Access evaluates signals like user location and device state to enforce policy-based access rules. While multi-factor authentication can be required by these policies, it is merely a response rather than the core mechanism.
Q5. By design, when an entire Azure region fails as it may during a natural disaster in that region, where do some Azure services automatically fail over to?
Answer: D. Its region pair, which is at least 300 miles away in the same geography
Azure pairs regions within the same geography to provide reliable failover during regional disasters. Choosing a region in another geography is wrong because Microsoft keeps paired regions close to maintain low replication latency.
Q6. What is the primary benefit of using containers for deploying applications to Azure?
Answer: B. Improved portability and consistency
Containers bundle applications and dependencies together, ensuring consistent deployments across diverse environments. While security can be a benefit, the primary exam focus is reliable portability rather than automatic network enhancements.
Q7. What is the primary purpose of Azure B2B collaboration?
Answer: D. To allow guest users from external organizations to access your organization's resources.
Microsoft Entra B2B collaboration allows external partners to securely access your resources using their own identities. Do not confuse this with B2C, which manages customer identities for public-facing applications.
Q8. Which is the lowest-cost storage redundancy option?
Answer: B. LRS
Locally Redundant Storage, or LRS, is the lowest-cost redundancy option because it replicates data three times within a single datacenter. Options like GRS or ZRS cost more because they provide protection against facility-wide outages.
Q9. How does a defense-in-depth model improve overall security?
Answer: D. By making it more difficult for attackers to breach multiple layers of security.
A defense-in-depth strategy uses multiple layers of security to protect data and assets. If an attacker breaches one layer, such as the network perimeter, additional internal controls like identity verification or data encryption remain active to slow down or stop the attack.
Q10. Which of the following is a key feature of Azure Virtual Machine Scale Sets?
Answer: B. They automatically scale the number of VM instances based on demand or a schedule.
Azure Virtual Machine Scale Sets automatically adjust the number of running virtual machine instances based on demand or a predefined schedule. This ensures applications handle traffic spikes gracefully without requiring manual intervention to deploy individual machines.
Q11. How does Azure Policy help manage Azure resources?
Answer: A. By defining rules that govern resource configuration and usage
Azure Policy evaluates resources against predefined rules to enforce compliance and organizational standards. It focuses on configuration governance, whereas Microsoft Defender for Cloud handles real-time security threat alerts.
Q12. How does the consumption-based model help businesses manage their IT costs?
Answer: A. By aligning costs with actual usage
The consumption model aligns costs directly with actual resource usage, eliminating upfront investments. This pay as you go approach allows businesses to scale dynamically and avoid paying for idle infrastructure capacity.
Q13. In which storage redundancy option does Azure keep six copies of your files across two regions?
Answer: C. GRS
Geo redundant storage copies your data asynchronously to a secondary region, maintaining six total copies. Locally redundant storage only keeps three copies within a single datacenter, providing less regional durability.
Q14. How does high availability help businesses avoid financial losses?
Answer: C. By ensuring uninterrupted revenue generation
High availability minimizes downtime to ensure uninterrupted revenue generation and continuous customer access. While preventing data loss is critical for disaster recovery, it is distinct from the continuous uptime availability provides.
Q15. What type of scaling typically involves adding more resources to a pool of existing resources?
Answer: B. Horizontal scaling
Horizontal scaling, or scaling out, adds more instances like virtual machines to a pool to handle increased load. Vertical scaling increases the capacity of a single resource by adding more CPU or memory.
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