AWS AWS Storage Solutions 1 — Questions and Answers
Question 1: What is the difference between Amazon S3 storage classes for cost optimization?
- Classes range from S3 Standard for frequent access to S3 Glacier Deep Archive for long-term archival at lower cost (Correct answer)
- All storage classes have the same pricing
- Glacier is for real-time data processing
- S3 Standard is the cheapest option
Correct answer: Classes range from S3 Standard for frequent access to S3 Glacier Deep Archive for long-term archival at lower cost
S3 offers multiple storage classes: Standard (frequent access), Intelligent-Tiering (auto-optimization), Standard-IA and One Zone-IA (infrequent access), Glacier Instant/Flexible Retrieval, and Glacier Deep Archive, each with decreasing cost but increasing retrieval times.
Question 2: When should you use Amazon EBS versus Amazon EFS?
- EBS provides block storage for single EC2 instances; EFS provides shared file storage accessible by multiple instances (Correct answer)
- EBS is for shared storage; EFS is for single instances
- They are interchangeable services
- EBS is only for Windows; EFS is only for Linux
Correct answer: EBS provides block storage for single EC2 instances; EFS provides shared file storage accessible by multiple instances
EBS provides persistent block-level storage volumes for individual EC2 instances, while EFS provides a fully managed elastic NFS file system that can be shared across multiple EC2 instances simultaneously.
Question 3: What is Amazon S3 versioning and why is it important?
- Keeping multiple variants of an object to protect against accidental deletion and overwrites (Correct answer)
- Tracking which version of the AWS SDK you're using
- Numbering S3 buckets sequentially
- A method to compress files in S3
Correct answer: Keeping multiple variants of an object to protect against accidental deletion and overwrites
S3 versioning preserves, retrieves, and restores every version of every object stored in a bucket, providing protection against accidental deletion and overwrites, and enabling easy recovery of previous versions.
Question 4: What is AWS Storage Gateway?
- A hybrid cloud storage service connecting on-premises environments to AWS cloud storage (Correct answer)
- A physical security gate for AWS data centers
- A tool for monitoring storage capacity
- A VPN service for storage networks
Correct answer: A hybrid cloud storage service connecting on-premises environments to AWS cloud storage
AWS Storage Gateway provides a hybrid storage solution connecting on-premises environments to cloud storage through file, volume, and tape gateway modes, enabling seamless integration with existing infrastructure.
Question 5: What is the maximum size of a single object that can be stored in Amazon S3?
- 5 TB (Correct answer)
- 5 GB
- 1 TB
- Unlimited
Correct answer: 5 TB
The maximum size of a single object in S3 is 5 TB. For objects larger than 5 GB, multipart upload must be used. The maximum single PUT upload is 5 GB.
Question 6: What is Amazon S3 Transfer Acceleration?
- A feature that speeds up S3 transfers by routing through CloudFront edge locations (Correct answer)
- A faster version of S3
- A service that compresses files during upload
- A tool for batch-moving files between buckets
Correct answer: A feature that speeds up S3 transfers by routing through CloudFront edge locations
S3 Transfer Acceleration uses CloudFront's globally distributed edge locations to route uploads over optimized network paths, significantly speeding up long-distance transfers to S3 buckets.
AWS AWS Storage Solutions 1
What is the difference between Amazon S3 storage classes for cost optimization?