AWS Certified Solutions Architect – Associate (SAA-C02) — Question 526

A company is deploying an application that processes large quantities of data in parallel. The company plans to use Amazon EC2 instances for the workload. The network architecture must be configurable to prevent groups of nodes from sharing the same underlying hardware.
Which networking solution meets these requirements?

Answer options

• A. Run the EC2 instances in a spread placement group.
• B. Group the EC2 instances in separate accounts.
• C. Configure the EC2 instances with dedicated tenancy.
• D. Configure the EC2 instances with shared tenancy.

Correct answer: A

Explanation

A spread placement group guarantees that each instance is placed on distinct physical racks with independent power and network sources, preventing them from sharing the same underlying hardware. Dedicated tenancy ensures your instances run on hardware dedicated to a single customer, but it does not prevent your own instances from being placed on the same physical host. Shared tenancy and multiple accounts do not offer the granular rack-level separation required for this workload.