Lesson 1 - Exam Overview
1.1 Exam Logistics
- 65 Questions
- 130 mins
- 2 mins/question, Scenario based
- 1 correct answer of 4 choices, 2 correct answer of 4 choices
- No partial credit
- 1000 total points
- 720 points to pass
- Unscored questions are there. We don't know which will be them.
- 3 passes - Easy questions, Complex questions, Unknowns
- No negative marking
1.2 Exam strategies and Prerequisites
- Deployment patterns
- Read documentation
- Do Hands-on
- IAC, Monitoring, Compliance-based services, Storage, Networking, Database
- Well-Architected framework
- Security, Resilience
- AWS global infrastructure - Zones, regions
- Network technologies - IPv4, 7 layer OSI model
- Security features and tools, Best practices (not in deep)
1.3 Well-Architected Framework
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Reliability Principles
- Test recovery procedures
- Automatic recovery
- Scale horizontally - Adding more machines to your pool of resources
- Stop guessing capacity
- Manage change in automation
-
Performance efficiency Principles
- Democratize advanced tech: you do not need to be expert in particular technology
- Go global in minutes
- Use serverless architectures
- Experiment more often
- Mechanical sympathy: Requirements determine the technology
-
Security
- Implement strong identity foundation
- Enable traceability
- Apply security at all layers
- Automate security best practices
- Protect data in transit and at rest
- Keep people away from data
- Prepare for security events
-
Cost optimization
- Adapt a consumption model
- Measure overall efficiency: and take actions
- Stop spending money on data center operations
- Analyze and attribute expenditure: monthly bill
- Use managed services to reduce cost of ownership
-
Operational Excellence
- Perform operations as code
- Annotated documentation
- Make frequent, small, reversible changes
- Refine operations procedures frequently
- Anticipate failure: Disaster recovery
- Learn from all operational failures: Provide feedback to team
1.4 Question domains
-
Design resilient architectures - 30%
- Design a multi-tier architecture solution: multiple services
- Design highly available and/or fault tolerant
- Design decoupling mechanisms using AWS: Not highly reliant on each other
- Choose apt resilient storage
-
Design high performing architectures - 28%
- Identify elastic and scalable solutions for workload
- Select high performing and scalable storage solutions
- Select high performance networking solutions
- Select high performance db solutions for workload
-
Design Secure applications and architectures - 24%
- Design secure access to AWS: IAM
- Design secure application tiers
- Select appropriate data security solution
-
Design cost-optimized architectures - 18%
- Identify cost-effective storage solutions
- Identify Compute and Database solutions
- Identify Network architecture solutions
2 & 3 are little bit harder. So focus on these.