AWS Certified Cloud Practitioner
Get started today
Ultimate access to all questions.
Deep dive into the quiz with AI chat providers.
We prepare a focused prompt with your quiz and certificate details so each AI can offer a more tailored, in-depth explanation.
A company needs to deploy an application with high availability and fault tolerance. How should the company deploy the application to meet these requirements?
Real Exam
Community
RRitesh
A
In a single Availability Zone in an AWS Region
B
Across multiple Availability Zones in an AWS Region
C
Across multiple subnets in an Availability Zone
D
Across multiple edge locations by using AWS Outposts
Explanation:
Explanation
High availability and fault tolerance require distributing resources across multiple independent failure domains to ensure continued operation even if one component fails.
Why Option B is Correct:
-
Availability Zones (AZs) are physically separate data centers within an AWS Region
-
Each AZ has independent power, cooling, and networking
-
Deploying across multiple AZs ensures that if one AZ fails, the application can continue running in other AZs
-
This provides automatic failover and redundancy
Why Other Options Are Incorrect:
-
Option A (Single AZ): Vulnerable to AZ-level failures - if that single AZ goes down, the entire application becomes unavailable
-
Option C (Multiple subnets in one AZ): While subnets provide network segmentation, they still share the same physical infrastructure within one AZ, so they're vulnerable to AZ-level failures
-
Option D (Edge locations with Outposts): AWS Outposts extend AWS infrastructure to on-premises locations, but edge locations are primarily for content delivery (CloudFront) and don't provide the same level of high availability as multi-AZ deployments
Key AWS Concepts:
-
Availability Zones: Isolated locations within AWS Regions
-
High Availability: System's ability to remain operational for extended periods
-
Fault Tolerance: System's ability to continue operating despite component failures
For maximum resilience, AWS recommends deploying critical applications across multiple Availability Zones.
Comments
Loading comments...