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Answer: Implement Multi-AZ deployments to ensure high availability and automatic failover across different availability zones., Employ Auto Scaling groups to dynamically adjust EC2 instances in response to application demand, supporting scalability and high availability.
The correct answers are B and C. Multi-AZ deployments (B) provide high availability by running the application across multiple availability zones, ensuring automatic failover in case of a zone failure. Auto Scaling groups (C) are essential for scalability, as they automatically adjust the number of EC2 instances based on the application's demand. While EC2 Spot Instances (A) can reduce costs, they are not suitable for highly available workloads due to the risk of interruption. AWS Backup (D) is important for data protection but does not contribute to high availability or scalability. EC2 Reserved Instances (E) offer cost savings but do not address the requirements for high availability and scalability.
Author: LeetQuiz Editorial Team
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A company is developing an application hosted on Amazon EC2. The application requires 24/7 availability and a scalable, highly available architecture. Which two design guidelines should be applied?
A
Utilize EC2 Spot Instances for cost savings, understanding potential interruptions due to market pricing.
B
Implement Multi-AZ deployments to ensure high availability and automatic failover across different availability zones.
C
Employ Auto Scaling groups to dynamically adjust EC2 instances in response to application demand, supporting scalability and high availability.
D
Adopt AWS Backup for data protection and disaster recovery, recognizing its role in data safety rather than directly in high availability.
E
Consider EC2 Reserved Instances for cost-effectiveness, noting their irrelevance to the architecture's high availability and scalability.
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