CLF-C02 Cloud Architecture & Deployment Principles 5 — Questions and Answers
Question 1: Which AWS Well-Architected Framework pillar focuses on the ability to run and monitor systems to deliver business value and to continually improve supporting processes?
- Cost Optimization
- Operational Excellence (Correct answer)
- Sustainability
- Reliability
Correct answer: Operational Excellence
The Operational Excellence pillar covers running and monitoring systems, improving processes, and supporting people with procedures and automation.
Question 2: What does 'Recovery Time Objective (RTO)' measure in disaster recovery planning?
- The maximum acceptable data loss measured in time
- The maximum acceptable time to restore service after a failure (Correct answer)
- The cost to recover from a disaster
- The frequency of backup snapshots
Correct answer: The maximum acceptable time to restore service after a failure
RTO is the maximum acceptable time that a system can be down before recovery must be complete and service restored.
Question 3: A company wants to ensure that no single person can both approve and deploy code changes to production. Which principle does this implement?
- Principle of least privilege
- Separation of duties (Correct answer)
- Defense in depth
- Zero trust
Correct answer: Separation of duties
Separation of duties divides responsibilities among multiple people so no single person has end-to-end control over critical processes, reducing fraud and error risk.
Question 4: Which architectural pattern uses a fully managed service to handle HTTP requests and route them to backend resources, eliminating the need to manage web server infrastructure?
- Direct EC2 access
- Amazon API Gateway (Correct answer)
- AWS Direct Connect
- Amazon VPC peering
Correct answer: Amazon API Gateway
Amazon API Gateway is a fully managed service that handles all aspects of accepting and processing API calls without requiring server management.
Question 5: What is the architectural benefit of using Amazon S3 for static website hosting compared to hosting on EC2?
- S3 supports server-side scripting like PHP
- S3 automatically scales without managing servers and costs less for static content (Correct answer)
- S3 provides better database performance
- S3 supports real-time WebSocket connections
Correct answer: S3 automatically scales without managing servers and costs less for static content
S3 static hosting automatically scales to any traffic level, requires no server management, and is significantly cheaper than running EC2 for static files.
Question 6: Which concept describes the practice of distributing incoming network traffic across multiple targets to improve application availability?
- Auto Scaling
- Load balancing (Correct answer)
- Content delivery
- Route 53 failover
Correct answer: Load balancing
Load balancing distributes incoming traffic across multiple healthy targets, preventing any single instance from becoming a bottleneck and improving availability.
Question 7: A company is evaluating moving to the cloud and wants to understand Total Cost of Ownership (TCO). Which costs are typically ELIMINATED when migrating from on-premises to AWS?
- Software licensing fees
- Data transfer costs
- Hardware procurement and data center facility costs (Correct answer)
- Application development costs
Correct answer: Hardware procurement and data center facility costs
Migrating to AWS eliminates capital expenditure on hardware, data center facilities, power, cooling, and physical security since AWS manages all underlying infrastructure.
CLF-C02 Cloud Architecture & Deployment Principles 5
Which AWS Well-Architected Framework pillar focuses on the ability to run and monitor systems to deliver business value and to continually improve supporting processes?