AWS

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The AWS Certified Solutions Architect – Associate exam is intended for individuals with experience designing distributed applications and systems on the AWS platform. Of the three associate-level exams, the certified solutions architect AWS certification is the most generic, and most of the questions are scenario-based (understanding which services to use to solve different business use cases).
The exam is divided into four sections:

1. Designing highly available, cost efficient, fault tolerant, scalable systems (60%)
2. Implementation/Deployment (10%)
3. Data Security (20%)
4. Troubleshooting (10%)

Some questions require that you understand and are able to create simple AWS architecture. Most of the questions are related to the following areas:

• EC2: Typology and when to use one type over another, costs, IAM roles, autoscaling, snapshots, and AMI
• Identity and Access Management (IAM)
• S3: Standard vs. infrequent access, Glacier, limits, security, encryption, dynamic hosting (endpoints names), lifecycle management, transfer acceleration, import export data (Snowball)
• Virtual Private Cloud (VPC)
• Security Groups and Access Control List: Differences between the two
• DirectConnect
• Elastic Load Balancer (ELB)
• Simple Queue Service (SQS): Limits, characteristics (no order queue), message dimensions (message can contain up to 256KB of text, billed at 64KB chunks), design (two queues if you need priority), visibility timeout, maximum long polling timeout, messages retention, costs.
• Simple Notification Service (SNS): Redundancy on availability zone (AZ); SNS can notify to email, text or SMS, SQS, or any HTTP endpoint; messages can be customized for each protocol (HTTP, HTTPS, EMAIL, JSON, SQS, or Application)
• RDS: Configurations, multiple AZ, read replica
• CloudWatch
• Route53: Policies
• Disaster Recovery: Recovery Time Objective, Recovery Point Objective