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Steps to take:
Step 3 - Practise Tests:
Test - Strategy:
- Understand - try to understand the main points of the question ( read throw more than one time, if needed)
- Eliminate - remove Answer that are 100% wrong in your point of view
- Evaluate - think about the tradeoffs of the remaining answers. Consider what is said and what is implied.
- Select - select the correct answers (from your point of view; you will never be asked to select more than 2 and if you need to select more than one, the question will ask for it).
- Validate - check if your answer corresponse and fulfil the requirments of the given question
Tips & Tricks:
Test - & Certification Domaintopics:
Domain 1 - Design Resilient Architectures
- Single AZ Answers are always incorrect
- No single point of failures
- High Availability -ne Fault Tolerant
Domain 2 - Design High-Performing Architectures
- Look always for caching options (ElastiCache)
- Know how and where to use autoscaling
- Selecting the best instance type (t vs m vs c) in regard of the Use Case (Compute, General Purpose -> Webserver vs. App - Server)
Domain 3 - Design Secure Applications and Architecutres
- Lock down Root - Account
- Security Group (doesn't have a dedicated deny state - stateless) vs. NACLs (Network Access Controll List - statefull)
- IAM Roles are in a security prospective always the right way to go
Domain 4 - Design Cost Optimized Architectures:
- For always on instances -> reserved instances is a good optins
- Serverless (Lambda, DynamoDB, S3, Fargate) is always the most cost effective option
- Selecting the best instance type (t vs m vs c) in regards to Costs
- Select the best cost effective storage type (gp2 vs io1)
- Cost Optimization Questions -> in most Cases you have 2 Options that will work, but one fits better in regards to costs.
No domain associated tips:
- For unstructured Data -> S3 is a good match
- Managed services are preferred (fits more than one domain)
- Mark question for later review