99 - Exam Tips (Keywords)

Question 1

Highly Available

Answer 1

Use Multiple Availability zones

Question 2

Fault-Tolerant

Answer 2

Use Multiple Availability zones and a complete replica of the application environment for fail-over. The application failure in one AZ should automatically lead to recovery in a different AZ or region

Question 3

Real-Time Data

Answer 3

If you read real-time data processing, it’s likely related to Kinesis services

Question 4

Disaster

Answer 4

Failover to a different region if required

Question 5

Long Term Storage

Answer 5

Glacier or Deep Glacier storage

Question 6

Managed Service

Answer 6

S3 for data storage, Lambda for computing, Aurora for RDS and DynamoDB for NoSQL database

Question 7

Use AWS Network

Answer 7

Usually, these keywords are related to communication between VPC instances and AWS services. Use VPC gateways and endpoints to connect to these services

Question 8

Use AWS Network

Answer 8

Usually, these keywords are related to communication between VPC instances and AWS services. Use VPC gateways and endpoints to connect to these services

Question 9

Classic 2-tier application architecture, made up of Web server and Database server

Answer 9

1) Scenario 1 (Simple Setup)
Internet -> Web Server (EC2) -> MySQL (RDS instance)

2) Scenario 2 (Setup with Load Balancing ELB and AutoScalingGroup ASG)
Internet -> ELB _> ASG -> Web Server (EC2) -> MySQL (RDS instance)

3) Scenario 3 (Serverless Web Application)
Internet -> API Gateway -> Lambda -> DynamoDB or/and S3