CLF-C02 Billing, Pricing, and Support Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  All three services are completely free for the entire 12-month period because the startup is using the Free Tier.

  Why it's wrong here

  This option is incorrect because the AWS Free Tier does not make all services completely free for 12 months without limits. Each service has specific monthly caps—EC2 gives 750 hours per month, S3 gives 5 GB, and RDS gives 20 GB—and usage beyond those caps is billed at standard rates. For example, the startup's 10 GB of S3 storage exceeds the free 5 GB allocation, so the additional 5 GB will incur charges.

  When this WOULD be correct

  This option would be correct if the question specified that all usage is within the Free Tier limits for each service and the Free Tier offers unlimited usage for all services during the first 12 months. For example, a question stating 'A startup uses only services that are entirely free under the AWS Free Tier for 12 months with no usage limits' would make this answer correct.

• ✓

  The EC2 instance usage will be free for up to 750 hours per month; the S3 storage will be free for the first 5 GB, with standard charges for the additional 5 GB; the RDS storage will be free for the first 20 GB.

  Why this is correct

  This is accurate. EC2 free tier provides 750 hours per month, enough for continuous usage. S3 free tier includes 5 GB, so extra 5 GB is billed. RDS free tier includes 20 GB of storage, so 1 GB is within the free limit.

• ✗

  The EC2 instance usage will be free for up to 750 hours per month; the S3 storage will be free for up to 10 GB; the RDS storage will be free for up to 20 GB.

  Why it's wrong here

  The EC2 instance usage is correctly stated as free for up to 750 hours per month, but this option overstates the S3 free tier. AWS Free Tier includes only 5 GB of S3 standard storage, not 10 GB, so the startup would incur standard charges for the additional 5 GB. The RDS free tier does include 20 GB of storage, which is accurate, but the S3 error makes this answer incorrect.

  When this WOULD be correct

  This option would be correct if the question stated that the startup uses 5 GB of S3 Standard storage instead of 10 GB, and the Free Tier limits for S3 were 10 GB (which is not the case). Alternatively, if the question specified a different service with a 10 GB free limit, such as Amazon DynamoDB (25 GB free), this option could apply.

• ✗

  The EC2 instance usage will be free for the first 750 hours total over the 12-month period; the S3 storage will be free for the first 5 GB; the RDS storage will be free for the first 20 GB.

  Why it's wrong here

  This option correctly identifies the Free Tier limits for S3 (5 GB) and RDS (20 GB), but it misrepresents the EC2 free tier as a cumulative total across 12 months. In reality, the 750 hours of EC2 usage reset every month, allowing up to 750 hours per month (e.g., one instance running continuously), not a single 750-hour pool for the entire year. A cumulative limit would be exhausted in about a month and is not how AWS Free Tier operates.

  When this WOULD be correct

  This option would be correct if the question described a Free Tier that offers a one-time allocation of 750 hours for the entire 12-month period, such as a limited-time promotional credit or a non-monthly free usage allowance.

Option-by-option analysis

Why each answer is right or wrong

Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.

Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”