This MS-900 practice question tests your understanding of describe cloud concepts. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: high availability ensures continuous service operation despite component failures.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
During requirements gathering, an IT manager says the organization must keep services available during a hardware failure. Cloud concept or benefit best matches this requirement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Microsoft Planner
Why wrong: Planner manages tasks and does not describe this cloud model or benefit.
Data Loss Prevention (DLP)
Why wrong: DLP protects sensitive information from inappropriate sharing, not this cloud concept.
High availability
High availability focuses on keeping services accessible despite component failure.
Sensitivity labels
Why wrong: Sensitivity labels classify and protect content, not this cloud concept.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
High availability
High availability (C) is the correct cloud concept because it directly addresses the requirement to keep services operational during hardware failure. In Microsoft 365, high availability is achieved through redundant infrastructure, such as multiple server instances across different Azure availability zones, and automatic failover mechanisms that ensure service continuity without manual intervention.
Key principle: High availability ensures continuous service operation despite component failures.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Planner
Why it's wrong here
Planner manages tasks and does not describe this cloud model or benefit.
Data Loss Prevention (DLP)
Why it's wrong here
DLP protects sensitive information from inappropriate sharing, not this cloud concept.
High availability
Why this is correct
High availability focuses on keeping services accessible despite component failure.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
High availability ensures continuous service operation despite component failures.
Sensitivity labels
Why it's wrong here
Sensitivity labels classify and protect content, not this cloud concept.
Common exam traps
The trap here is that candidates may confuse high availability with disaster recovery, but the question specifically asks about keeping services available during a hardware failure, which is the definition of high availability, not the broader recovery from a major outage.
Detailed technical explanation
High availability in Microsoft 365 relies on technologies like load balancing, automatic failover, and replication across geographically dispersed data centers. For example, Exchange Online uses Database Availability Groups (DAGs) to replicate mailbox databases across multiple servers, ensuring that if one server fails, another takes over with minimal disruption. This is governed by Service Level Agreements (SLAs) that guarantee 99.9% uptime for core services, with credits issued if availability drops below that threshold.
Key takeaway
High availability ensures continuous service operation despite component failures.
Real-world example
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Review high availability ensures continuous service operation despite component failures., then practise related MS-900 questions on the same topic to reinforce the concept.
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FAQ
Describe cloud concepts — This question tests Describe cloud concepts — High availability ensures continuous service operation despite component failures..
The correct answer is: High availability — High availability (C) is the correct cloud concept because it directly addresses the requirement to keep services operational during hardware failure. In Microsoft 365, high availability is achieved through redundant infrastructure, such as multiple server instances across different Azure availability zones, and automatic failover mechanisms that ensure service continuity without manual intervention.
Review high availability ensures continuous service operation despite component failures., then practise related MS-900 questions on the same topic to reinforce the concept.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
High availability ensures continuous service operation despite component failures.
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Last reviewed: Jun 11, 2026
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