Design cost-optimized architectures
Practise only this domain. 49 questions with explanations, 20 at a time.
Start this domainSample questions
- A company is choosing Amazon S3 storage classes for data in the same AWS Region. Order these storage classes from the highest to the lowest storage price per GB-month. Consider storage price only, not retrieval or request charges.Medium
- A production database runs 24/7 on an r6i.4xlarge EC2 instance, and the team is confident the workload will run for at least three years. Which purchasing option provides the maximum cost savings?Easy
- A company stores 500 TB in S3. Analysis shows 30% of objects accessed frequently, 40% accessed monthly, and 30% untouched for over 180 days. Which S3 feature automatically moves objects to cheaper storage classes based on access patterns?Easy
- A company's private-subnet EC2 instances fetch large objects from S3 through a NAT gateway, and the associated data-processing charges show up prominently on every bill. What is the most effective fix to eliminate those charges?Hard
- A company runs development and test EC2 instances only during business hours (Monday to Friday, 8 AM to 6 PM). What is the simplest way to cut these environments' costs by roughly 70%?Easy
- A company's Lambda function runs 10 million times a month at about 200 ms per invocation with 512 MB of memory, and the Lambda bill is higher than budgeted. Which optimization reduces Lambda costs most?Medium
- A company wants to centralize AWS billing across its 15 accounts so it can benefit from volume discounts and Reserved Instance sharing. Which AWS feature enables this?Easy
- A company must move 80 TB of on-premises data to S3 as a one-time migration. Only a shared 1 Gbps internet connection is available and production traffic runs over it. Which migration option is most efficient?Easy