AWS Certified Solutions Architect Associate (SAA-C03)
Instructions: Choose the best answer for each question.
1. A company is running a stateless web application on Amazon EC2 instances
behind an Application Load
...
AWS Certified Solutions Architect Associate (SAA-C03)
Instructions: Choose the best answer for each question.
1. A company is running a stateless web application on Amazon EC2 instances
behind an Application Load Balancer (ALB). The site experiences sudden,
unpredictable spikes in traffic. Which scaling strategy will be MOST cost-effective
to handle this traffic?
a) Manual scaling by adding instances during business hours.
b) Scheduled scaling based on a weekly calendar.
c) Simple scaling based on average CPU utilization.
d) Target tracking scaling based on request count per target.
Answer: d
Target tracking scaling with a metric like request count per target is the most cost
effective and responsive option for unpredictable spikes. It automatically adjusts capacity
to maintain a specified metric value, ensuring performance without over-provisioning.
Manual (a) and scheduled (b) scaling cannot react to unpredictable spikes. Simple scaling
(c) is less efficient than target tracking.
2. A solutions architect needs to design a storage layer for a high-performance
database that requires low-latency, persistent block storage for a primary
database instance and also needs to capture point-in-time snapshots for disaster
recovery. Which storage solution meets these requirements?
a) Amazon S3 with S3 Transfer Acceleration
b) Amazon EBS with snapshots
c) Amazon EFS with backup
d) Amazon EC2 Instance Store
Answer: b
*Amazon EBS provides persistent block storage suitable for a primary database. EBS
snapshots provide a native mechanism for point-in-time backups, which can be used for
disaster recovery. S3 (a) is object storage, not block storage. EFS (c) is a file system.
Instance Store (d) is ephemeral, not persistent.*
3. A company wants to ensure that data stored in an Amazon S3 bucket is
encrypted at rest. They do not want to manage the encryption keys themselves.
Which S3 encryption option should they use?
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