ISC2 Systems Security Certified Practitioner (SSCP) Practice Question
An internal web application currently runs on a single Amazon EC2 instance located in the us-east-1a Availability Zone. The security team needs to improve the application's availability in line with SSCP principles of redundancy and fault tolerance while minimizing ongoing administration. Which solution best meets these requirements?
Resize the instance to a larger type and configure RAID 0 striped EBS volumes for faster disk throughput.
Place an Amazon CloudFront distribution in front of the instance to cache web content at edge locations.
Create an AMI of the instance and deploy an Auto Scaling group with at least two instances across separate Availability Zones behind an Application Load Balancer.
Enable Multi-AZ on the VPC subnet so the existing instance is automatically replicated to another AWS Region.
Creating an Amazon Machine Image (AMI) of the existing instance and launching an Auto Scaling group with a minimum of two instances spread across multiple Availability Zones behind an Application Load Balancer adds both redundancy and fault tolerance. If one Availability Zone or instance fails, traffic is automatically routed to healthy instances in the remaining zone, and Auto Scaling recreates failed instances, meeting the availability objective with little manual intervention. Simply increasing instance size or using RAID 0 addresses performance, not cross-AZ redundancy. Enabling a nonexistent "Multi-AZ" setting on a subnet provides no protection, and CloudFront only caches content; if the origin instance fails, requests still fail, so availability is not assured.
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ISC2 Systems Security Certified Practitioner (SSCP)
Security Concepts and Practices
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