AWS Certified Cloud Practitioner
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A company wants to deploy its critical application on AWS and maintain high availability. How should the company deploy the application to meet these requirements?
Real Exam
Community
RRitesh
A
In a single Availability Zone
B
On AWS Direct Connect
C
On Reserved Instances
D
In multiple Availability Zones
Explanation:
Explanation
To achieve high availability for critical applications on AWS, deploying across multiple Availability Zones (AZs) is the recommended approach.
Why Multiple Availability Zones?
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Fault Isolation: Each Availability Zone is physically separate with independent power, cooling, and networking
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Automatic Failover: If one AZ fails, the application can continue running in other AZs
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High Availability Architecture: Multi-AZ deployments provide redundancy and resilience
Why Not the Other Options?
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Single Availability Zone: Creates a single point of failure - if that AZ goes down, the entire application goes down
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AWS Direct Connect: This is for dedicated network connections, not for application deployment or high availability
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Reserved Instances: This is a billing/pricing model for cost savings, not a deployment strategy for high availability
Best Practice
For mission-critical applications, AWS recommends deploying across at least 2-3 Availability Zones within the same region to ensure continuous operation even during AZ-level failures.
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