Cloud Computing Lab (IT-704) - Important Questions

Configure a cloud object storage bucket (Amazon S3 or OpenStack Swift). Demonstrate uploading and downloading objects using both the cloud provider's web console and CLI/SDK. Then create and apply a lifecycle policy to transition objects to a cheaper storage class after a specified number of days and to permanently delete objects after another specified period. Provide commands, screenshots/logs, and verification steps.

Explain and implement access control for an object storage bucket. Demonstrate the use of ACLs, bucket policies (or Swift ACL equivalents), and IAM role-based access. Additionally, generate and use a pre-signed URL to grant temporary access to a private object. Provide policy JSON, CLI/SDK commands, and verification of permissions.

Enable versioning on an object storage bucket and demonstrate the creation of multiple versions of an object. Show how delete markers behave and implement a lifecycle rule that transitions or expires non-current versions. Explain the steps to restore a previous version and give CLI/SDK commands and verification outputs.

Perform a multipart upload of a large object to cloud object storage. Explain the multipart upload process, demonstrate uploading parts in parallel, complete the multipart upload, and measure throughput improvement compared to a single PUT. Include commands, configuration options used, and performance measurements.

Compare and demonstrate server-side encryption options (SSE-S3, SSE-C, SSE-KMS) and client-side encryption for object storage. Show how to upload and retrieve encrypted objects using at least two different methods and explain key management and key rotation implications. Provide commands and verification steps.

Add custom metadata and tags to objects in cloud object storage. Demonstrate how metadata and tags are set during upload and how lifecycle rules or queries can act on object tags. Provide examples of CLI/SDK commands to set tags/metadata and to list objects filtered by tags.

Configure an object storage bucket to host a static website and set up CORS rules to allow browser-based access from a specified origin. Demonstrate uploading site assets, configuring index/error documents, and verifying the site is served. Provide CORS configuration and verification steps using a browser or curl.

Set up cross-region replication (CRR) or object replication for an object storage service. Describe prerequisites (such as versioning), configure replication rules, and demonstrate that new objects are replicated to the destination region/bucket. Include configuration steps, verification, and discussion of replication consistency and costs.

Explain the consistency model of cloud object storage (read-after-write for new objects, eventual consistency for overwrite/delete operations) and demonstrate with experiments that show read-after-write behavior for new objects and potential stale reads after overwrites or deletes. Provide steps, observations, and implications for application design.

Mount an S3 or Swift bucket as a POSIX-like filesystem using a tool such as s3fs or Swift's FUSE. Demonstrate basic file operations, discuss limitations (consistency, latency, POSIX semantics), and measure basic file operation latencies (create, read, write, delete). Provide mount commands, configuration, and a short analysis of suitability for different workloads.