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?
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RRitesh
A
In a single Availability Zone
B
On AWS Direct Connect
C
On Reserved Instances
D
In multiple Availability Zones
Explanation:
Explanation
For high availability requirements, deploying an application across multiple Availability Zones (AZs) is the correct approach because:
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Availability Zones are physically separate data centers within an AWS Region
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Each AZ has independent power, cooling, and networking
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Deploying across multiple AZs provides fault tolerance - if one AZ fails, the application can continue running in other AZs
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This architecture ensures high availability and resilience
Why other options are incorrect:
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Single Availability Zone: Provides no redundancy - if that AZ fails, the entire application goes down
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AWS Direct Connect: This is for dedicated network connectivity, not for high availability deployment
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Reserved Instances: This is a billing/pricing model for cost savings, not a deployment strategy for high availability
High availability in AWS is achieved through multi-AZ deployments, which is a fundamental cloud architecture principle.
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