Exams / CLF-C02 / Cloud economics / Question 3
CLF-C02 practice question: Cloud economics (3 of 4)
Cloud Concepts A free question from our original CLF-C02 practice exam. Try it, then open the answer to see why each option is right or wrong.
A company runs its own MySQL database on Amazon EC2. Its database administrators spend much of their time installing patches and managing backups. How would moving the database to Amazon RDS help reduce the company's overall costs?
Choose one answer.
- AA. RDS removes the need to pay for any compute or storage for the database.
- BB. RDS lets the company run the database without any security responsibilities.
- CC. AWS handles routine tasks such as patching and backups, freeing staff time.
- DD. RDS automatically rewrites slow SQL queries so that smaller instances can be used.
Show the answer and explanation
Answer: C
- A. Wrong: RDS still charges for the database instance and storage. The saving comes from less operational work, not from free infrastructure.
- B. Wrong: The company still controls network access, database users and encryption choices under the shared responsibility model.
- C. Right: Correct. With RDS, AWS manages patching, backups and other routine tasks, so administrators can spend their time on higher-value work.
- D. Wrong: Query tuning remains the customer's job on RDS. AWS manages the infrastructure and database software, not the application's queries.
Explanation
Managed services such as Amazon RDS shift routine, undifferentiated work to AWS. On RDS, AWS handles database software installation and patching, operating system patching and backups, which reduces the staff effort and risk of running a database yourself on EC2. Lower operational effort is a key part of the economics of moving to the cloud.
Study
Keep practising
Answer questions with a score at the end, or practise just this topic with the explanation after each one. No sign-up needed.