1. What is the purpose of storage classes in cloud object storage?
Storage classes allow data to be placed in cost-effective tiers. Frequently accessed data stays in hot storage, while infrequent data moves to cold or archive storage.
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Cloud Basics · Question Set
Cloud Storage & Databases interview questions for placements and exams.
Questions
14
Included in this set
Subject
Cloud Basics
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Difficulty
Mixed
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Go through each question and its explanation. Use this set as a focused practice pack for Cloud Basics.
Storage classes allow data to be placed in cost-effective tiers. Frequently accessed data stays in hot storage, while infrequent data moves to cold or archive storage.
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Cloud SQL offers managed MySQL, PostgreSQL, and SQL Server databases. It handles backups, replication, and automatic failover for high availability.
DynamoDB is a key-value and document-based NoSQL database. It provides fast and predictable performance with seamless scalability.
Snapshots capture the current state of data or a database. They enable point-in-time recovery and easy restoration during failure or data loss.
Azure Blob Storage is a scalable object store for unstructured data. It supports hot, cool, and archive tiers to optimize cost and access speed.
Amazon RDS automates setup, patching, and backups for relational databases. It supports multiple engines like MySQL, PostgreSQL, MariaDB, Oracle, and SQL Server.
Lifecycle policies automatically move or delete data based on age or access patterns. They help save costs and manage long-term data retention efficiently.
Multi-region storage replicates data across geographically distant data centers. This improves availability, reduces latency for global users, and provides disaster recovery protection.
Relational databases like RDS and Cloud SQL use structured tables and relationships. NoSQL databases like DynamoDB or Firestore store data in flexible key-value or document formats for high scalability.
Cloud providers offer encryption at rest using managed keys or customer-managed keys. Data in transit is secured with SSL or TLS to prevent interception and ensure privacy.
Managed databases handle routine operations like patching, scaling, backups, and failover. This saves time for DevOps teams and ensures consistent performance and security.
Cold storage is ideal for data that is rarely accessed but must be retained for compliance or analysis. It costs much less than hot storage but retrieval times are slower.
Object storage keeps data as objects with metadata and a unique ID. It is ideal for storing files, logs, media, and backups at scale.
Amazon S3 (Simple Storage Service) is designed for storing and retrieving any amount of data. It’s highly durable, scalable, and accessible via the web.