AWS Well-Architected Framework and Design Principles

Question 1

The AWS Well-Architected Framework is organized around six pillars. Which pillar focuses on the ability of a system to recover from failures and dynamically acquire computing resources to meet demand?

Accepted Answer

Reliability

Answer

The Reliability pillar focuses on workloads that perform their intended function correctly and consistently, including the ability to recover from infrastructure or service disruptions, dynamically acquire computing resources to meet demand, and mitigate disruptions from misconfigurations or transient network issues.

Question 2

According to AWS Well-Architected best practices, what does 'design for failure' mean?

Accepted Answer

Architecting systems with the assumption that components will fail, so failures have no impact on users

Answer

'Design for failure' means assuming every component—servers, disks, network links—will eventually fail, and building redundancy, auto-recovery, and graceful degradation so that individual component failures do not affect end users. This leads to patterns like multi-AZ deployments, Auto Scaling, and health-check-based failover.

Question 3

Which AWS Well-Architected pillar includes design principles such as 'eliminate idle resources,' 'use managed and serverless services,' and 'match supply to demand'?

Accepted Answer

Cost Optimization

Answer

The Cost Optimization pillar focuses on avoiding unnecessary costs, right-sizing resources, using reserved capacity, and turning off idle resources. Principles like matching supply to demand (via Auto Scaling) and using managed services (to avoid over-provisioning) are central to this pillar.

Question 4

A Solutions Architect recommends deploying an application across three Availability Zones with an Application Load Balancer. Which Well-Architected pillar does this primarily address?

Accepted Answer

Reliability

Answer

Spreading workloads across multiple Availability Zones ensures the application remains available if one AZ experiences an outage. This directly addresses the Reliability pillar, which emphasizes fault isolation, redundancy, and automatic recovery from failures.

Question 5

The AWS Well-Architected Tool helps you review your workloads against AWS best practices. What format does it use to gather information about your architecture?

Accepted Answer

A set of questions across each of the six pillars that you answer about your workload

Answer

The AWS Well-Architected Tool presents a structured questionnaire organized by the six pillars. You answer questions about your workload's design decisions, and the tool identifies high-risk issues (HRIs) and provides improvement recommendations. It does not automatically scan your account configuration.

AWS Practice Test

AWS Practice Test

AWS Well-Architected Framework and Design Principles