CLF-C02 Storage Services 2 — Questions and Answers
Question 1: A company needs to store database backups that will be accessed once a month for compliance audits. Which S3 storage class offers the best cost savings?
- S3 Standard
- S3 Standard-IA (Correct answer)
- S3 Glacier Instant Retrieval
- S3 Intelligent-Tiering
Correct answer: S3 Standard-IA
S3 Standard-IA is designed for infrequently accessed data that still needs millisecond retrieval, making it ideal for monthly compliance backups.
Question 2: Which AWS service provides a fully managed NFS file system that can be mounted by multiple EC2 instances simultaneously?
- Amazon EBS
- Amazon S3
- Amazon EFS (Correct answer)
- AWS Storage Gateway
Correct answer: Amazon EFS
Amazon EFS (Elastic File System) is a fully managed NFS file system that supports concurrent access from multiple EC2 instances.
Question 3: A developer wants to serve static website content globally with low latency. Which combination of services is most appropriate?
- EC2 + RDS
- S3 + CloudFront (Correct answer)
- EFS + Route 53
- EBS + Elastic Load Balancing
Correct answer: S3 + CloudFront
S3 hosts static website files and CloudFront distributes them via a global CDN, minimizing latency for worldwide users.
Question 4: Which S3 feature allows you to automatically move objects to cheaper storage tiers as they age?
- S3 Versioning
- S3 Lifecycle Policies (Correct answer)
- S3 Replication
- S3 Object Lock
Correct answer: S3 Lifecycle Policies
S3 Lifecycle Policies automate transitions of objects between storage classes based on age, reducing storage costs over time.
Question 5: What is the maximum size of a single object that can be stored in Amazon S3?
- 5 GB
- 50 GB
- 5 TB (Correct answer)
- 500 TB
Correct answer: 5 TB
A single S3 object can be up to 5 TB in size; objects larger than 100 MB should use multipart upload.
Question 6: A company needs block storage that persists independently of an EC2 instance's lifecycle. Which service should they use?
- EC2 Instance Store
- Amazon EBS (Correct answer)
- Amazon S3
- Amazon Glacier
Correct answer: Amazon EBS
Amazon EBS volumes persist independently of EC2 instance lifecycles and can be detached and reattached to other instances.
Question 7: Which AWS service is best suited for archiving rarely accessed data with retrieval times ranging from minutes to hours?
- S3 Standard
- S3 Standard-IA
- S3 Glacier Flexible Retrieval (Correct answer)
- S3 One Zone-IA
Correct answer: S3 Glacier Flexible Retrieval
S3 Glacier Flexible Retrieval is designed for archival data with configurable retrieval times from minutes to 12 hours at very low cost.
CLF-C02 Storage Services 2
A company needs to store database backups that will be accessed once a month for compliance audits.
Which S3 storage class offers the best cost savings?