CompTIA CASP+ (CAS-004) — Question 585

In preparation for the holiday season, a company redesigned the system that manages retail sales and moved it to a cloud service provider. The new infrastructure did not meet the company's availability requirements. During a postmortem analysis, the following issues were highlighted:
1. International users reported latency when images on the web page were initially loading.
2. During times of report processing, users reported issues with inventory when attempting to place orders.
3. Despite the fact that ten new API servers were added, the load across servers was heavy at peak times.
Which of the following infrastructure design changes would be BEST for the organization to implement to avoid these issues in the future?

Answer options

• A. Serve static content via distributed CDNs, create a read replica of the central database and pull reports from there, and auto-scale API servers based on performance.
• B. Increase the bandwidth for the server that delivers images, use a CDN, change the database to a non-relational database, and split the ten API servers across two load balancers.
• C. Serve images from an object storage bucket with infrequent read times, replicate the database across different regions, and dynamically create API servers based on load.
• D. Serve static-content object storage across different regions, increase the instance size on the managed relational database, and distribute the ten API servers across multiple regions.

Correct answer: A

Explanation

Option A is the best choice because it addresses the latency by using CDNs for static content, ensures better report handling with a read replica, and provides scalability for API servers based on demand. Option B does not effectively address the need for auto-scaling and relies on bandwidth without optimizing server load. Option C suggests infrequent read times for images, which may not improve performance, while Option D does not adequately tackle the load balancing issue for API servers.