AWS Cloud Storage Quiz

Why does cloud storage often become more expensive over time?

• Because AWS raises prices annually

• Because data accumulates and is stored long term

• Because storage loses durability

• Because storage tiers are automatically upgraded

Answer explanation

Cloud storage costs increase over time primarily because data accumulates and is stored long term. As more data is added, the storage requirements grow, leading to higher costs.

Which AWS storage type is most similar to NAS on-premises?

• Amazon Glacier

• Amazon EBS

• Amazon EFS

• Amazon S3

Answer explanation

Amazon EFS (Elastic File System) is similar to on-premises NAS as it provides a scalable file storage solution that can be accessed concurrently by multiple instances, just like traditional NAS systems.

What is the main difference between block, file, and object storage?

• The billing model

• The operating system required

• The encryption algorithm used

• How data is structured and accessed

Answer explanation

The main difference lies in how data is structured and accessed: block storage uses fixed-size blocks, file storage organizes data in a hierarchy of files, and object storage manages data as discrete units with metadata.

Which AWS service uses NFS 4.x protocol to share files across multiple EC2 instances?

• Amazon FSx for Windows

• Amazon EFS

• Amazon Redshift

• Amazon Glacier

Answer explanation

Amazon EFS (Elastic File System) uses the NFS 4.x protocol, allowing multiple EC2 instances to share files seamlessly. In contrast, Amazon FSx for Windows is for Windows file shares, while Redshift and Glacier serve different purposes.

Which AWS storage type is best for static website hosting?

• Amazon FSx

• Amazon EBS

• Amazon S3

• Amazon EFS

Answer explanation

Amazon S3 is the best choice for static website hosting because it is designed for storing and serving static content like HTML, CSS, and JavaScript files. It offers high durability, scalability, and low cost, making it ideal for this purpose.

Which AWS storage type cannot be directly exposed to the public internet?

• Amazon EFS

• Amazon FSx

• Amazon S3

• Amazon EBS

Answer explanation

Amazon EBS (Elastic Block Store) is designed for use with EC2 instances and cannot be directly accessed over the internet, unlike Amazon S3, which can be publicly accessible. Therefore, EBS is the correct answer.

What happens to data stored in ephemeral storage when an EC2 instance is terminated?

• It persists forever

• It is copied to S3

• It is permanently lost

• It is encrypted and retained

Answer explanation

Ephemeral storage is temporary and tied to the lifecycle of the EC2 instance. When the instance is terminated, all data in ephemeral storage is permanently lost, making 'It is permanently lost' the correct choice.

Which AWS service is designed for high-speed in-memory storage using Redis or Memcached?

• Amazon FSx Lustre

• Amazon ElastiCache

• Amazon EFS

• Amazon S3 Glacier

Answer explanation

Amazon ElastiCache is specifically designed for high-speed in-memory storage, utilizing caching engines like Redis and Memcached, making it the correct choice for this requirement.

Which storage type is typically used for logs, reports, and backups across AWS services?

• Amazon FSx

• Amazon S3

• Amazon EBS

• Amazon EFS

Answer explanation

Amazon S3 is the ideal storage type for logs, reports, and backups due to its durability, scalability, and cost-effectiveness. It is designed for storing large amounts of unstructured data, making it perfect for these use cases.

Why is Amazon FSx for Lustre often used for HPC and machine learning workloads?

• Because it automatically compresses files

• Because it is cheapest

• Because it integrates with IAM policies

• Because it offers very high throughput and low latency

Answer explanation

Amazon FSx for Lustre is ideal for HPC and machine learning because it provides very high throughput and low latency, which are essential for processing large datasets efficiently.