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Answer: By deploying EC2 instances across multiple Availability Zones
The correct answer is C, which involves spreading EC2 instances across more than one Availability Zone. This approach enhances the reliability of the web application by providing redundancy and fault tolerance. In the event of a failure in one Availability Zone, the application can continue to operate in another, ensuring high availability. Launching large instances in the same Availability Zone (A) does not provide the necessary redundancy. Spreading instances across different security groups (B) is not directly related to the application's reliability. Using an AMI from AWS Marketplace (D) is a method for deploying instances but does not inherently increase reliability.
Author: LeetQuiz Editorial Team
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How can a company ensure the reliability of a web application hosted on Amazon EC2?
A
By launching large EC2 instances within a single Availability Zone
B
By distributing EC2 instances across multiple security groups
C
By deploying EC2 instances across multiple Availability Zones
D
By utilizing an Amazon Machine Image (AMI) sourced from the AWS Marketplace
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