Cloud Storage Services (S3, Azure Blob, Google Cloud Storage) Questions and Answers for Viva - 3

Answer-1: Cloud storage is a service that allows data to be stored, accessed, and managed over the internet on remote servers.

Answer-2: Amazon Simple Storage Service (S3) is a scalable object storage service offered by AWS.

Answer-3: Azure Blob Storage is Microsoft's object storage solution for the cloud, optimized for storing massive amounts of unstructured data.

Answer-4: Google Cloud Storage is a unified object storage service provided by Google Cloud Platform.

Answer-5: They store unstructured data such as images, videos, backups, logs, and large datasets.

Answer-6: An object consists of the data itself, metadata, and a unique identifier.

Answer-7: Data in S3 is stored in buckets, which are containers for objects.

Answer-8: A container is a grouping of blobs, similar to an S3 bucket.

Answer-9: S3 offers storage classes like Standard, Intelligent-Tiering, Infrequent Access, One Zone-IA, Glacier, and Glacier Deep Archive.

Answer-10: Azure Blob Storage offers Hot, Cool, and Archive tiers.

Answer-11: Google Cloud Storage provides Standard, Nearline, Coldline, and Archive classes.

Answer-12: Versioning keeps multiple variants of an object in the same bucket to prevent accidental deletion or overwrites.

Answer-13: Yes, AWS S3, Azure Blob Storage, and Google Cloud Storage all support versioning.

Answer-14: S3 provides 99.999999999% (11 9's) durability of objects.

Answer-15: Replication copies data across different regions or zones to increase availability and durability.

Answer-16: Yes, Azure offers locally redundant storage (LRS), zone-redundant storage (ZRS), geo-redundant storage (GRS), and read-access geo-redundant storage (RA-GRS).

Answer-17: Lifecycle management automates moving objects between storage classes or deleting them based on policies.

Answer-18: Yes, Google Cloud Storage allows lifecycle rules to manage data transitions automatically.

Answer-19: An ACL defines which users or groups can access an object or bucket and what permissions they have.

Answer-20: Using bucket policies, IAM roles, encryption at rest (SSE), and encryption in transit (SSL/TLS).

Answer-21: Azure Blob supports server-side encryption with Microsoft-managed keys, customer-managed keys, and client-side encryption.

Answer-22: Yes, data is encrypted at rest by default, with options for customer-managed encryption keys.

Answer-23: A pre-signed URL grants temporary access to an S3 object without requiring AWS credentials.

Answer-24: Yes, SAS tokens allow limited-time and scoped access to resources.

Answer-25: Google Cloud Storage uses signed URLs to provide temporary access.

Answer-26: Using multipart upload in S3, block blobs in Azure, and resumable uploads in Google Cloud Storage.

Answer-27: The maximum size is 5 terabytes.

Answer-28: Up to about 5 terabytes for block blobs.

Answer-29: Up to 5 terabytes per object.

Answer-30: S3 provides read-after-write consistency for new objects and eventual consistency for overwrite PUTs and deletes.

Answer-31: Azure Blob Storage provides strong consistency.

Answer-32: Google Cloud Storage offers strong global consistency.

Answer-33: It asynchronously replicates objects to a different AWS region for disaster recovery.

Answer-34: Geo-replication duplicates data to a secondary region for disaster recovery.

Answer-35: Yes, cloud storage is widely used for backup, disaster recovery, and archival purposes.

Answer-36: Storage used, data transfer, requests, data retrieval times, and storage class affect pricing.

Answer-37: By selecting appropriate storage classes and lifecycle policies.

Answer-38: Block storage manages data in fixed-size blocks and is used for disks; object storage manages data as objects and is optimized for scalability.

Answer-39: They are all object storage services.

Answer-40: Yes, all support static website hosting with public access to content.

Answer-41: A hybrid storage service connecting on-premises environments with AWS cloud storage.

Answer-42: Yes, Azure offers Azure StorSimple for hybrid cloud storage.

Answer-43: A tool to transfer large amounts of data into Google Cloud Storage from other clouds or on-premises.

Answer-44: They integrate with compute, analytics, machine learning, and security services for building end-to-end solutions.

Answer-45: Backup and restore, content distribution, big data analytics, media storage, and archival.

Answer-46: S3 can send notifications to services like AWS Lambda when certain events occur on buckets or objects.

Answer-47: Yes, Azure Blob Storage can trigger Azure Functions or Event Grid notifications.

Answer-48: Google Cloud Storage supports notifications via Pub/Sub for bucket changes.

Answer-49: Using IAM roles, policies, ACLs, and access tokens or signed URLs.

Answer-50: Scalability, durability, accessibility, cost efficiency, and easy integration with cloud applications.