Q.1 Which of the following best describes cloud storage?
Storing data only on local hard drives
Storing data across remote servers accessible via the internet
Using flash drives to store and transfer data
Saving data only on personal desktops
Explanation - Cloud storage allows data to be stored on remote servers managed by providers, accessible through the internet, not limited to local devices.
Correct answer is: Storing data across remote servers accessible via the internet
Q.2 What is the primary advantage of cloud databases?
They are slower than traditional databases
They cannot scale easily
They offer scalability and accessibility
They only work offline
Explanation - Cloud databases provide easy scalability and global accessibility, unlike traditional on-premise databases.
Correct answer is: They offer scalability and accessibility
Q.3 Which type of cloud storage is designed for storing large amounts of unstructured data?
Block storage
Object storage
File storage
Cache storage
Explanation - Object storage is ideal for unstructured data like images, videos, and backups, commonly used in cloud services.
Correct answer is: Object storage
Q.4 Amazon S3 is an example of which type of storage?
File storage
Object storage
Block storage
Cache storage
Explanation - Amazon S3 (Simple Storage Service) uses object storage to store unstructured data in buckets.
Correct answer is: Object storage
Q.5 Which of the following is a relational cloud database?
MongoDB Atlas
Amazon RDS
Cassandra
Redis
Explanation - Amazon RDS provides managed relational database services supporting engines like MySQL, PostgreSQL, and Oracle.
Correct answer is: Amazon RDS
Q.6 What does horizontal scaling mean in cloud databases?
Adding more memory to the same machine
Adding more servers to distribute load
Reducing storage size
Changing database schema
Explanation - Horizontal scaling distributes database load across multiple servers, improving performance and availability.
Correct answer is: Adding more servers to distribute load
Q.7 Which cloud provider offers Cloud SQL as a managed database service?
Amazon Web Services
Google Cloud Platform
Microsoft Azure
IBM Cloud
Explanation - Cloud SQL is Google Cloud's managed relational database service supporting MySQL, PostgreSQL, and SQL Server.
Correct answer is: Google Cloud Platform
Q.8 Which storage type is best for virtual machine disk volumes?
Object storage
File storage
Block storage
Cache storage
Explanation - Block storage is suited for structured workloads like VM disk volumes and transactional databases.
Correct answer is: Block storage
Q.9 Which of the following is a NoSQL database service in AWS?
Amazon RDS
Amazon Redshift
Amazon DynamoDB
Amazon Aurora
Explanation - DynamoDB is AWS's fully managed NoSQL database service optimized for high performance.
Correct answer is: Amazon DynamoDB
Q.10 In cloud storage, data redundancy primarily helps with:
Data compression
Data security
Data availability and reliability
Reducing costs
Explanation - Redundant storage ensures availability and reliability by storing multiple copies across locations.
Correct answer is: Data availability and reliability
Q.11 Which cloud storage type allows mounting and accessing via standard file system protocols?
File storage
Object storage
Block storage
Stream storage
Explanation - File storage supports access using protocols like NFS and SMB, similar to traditional file systems.
Correct answer is: File storage
Q.12 What is the primary role of a database replication feature?
Compressing data
Ensuring multiple copies for fault tolerance
Encrypting data at rest
Deleting unused data
Explanation - Replication ensures high availability by maintaining multiple synchronized database copies.
Correct answer is: Ensuring multiple copies for fault tolerance
Q.13 Which of these is an open-source cloud-native database?
Oracle DB
CockroachDB
Microsoft SQL Server
IBM Db2
Explanation - CockroachDB is an open-source, distributed SQL database built for cloud-native applications.
Correct answer is: CockroachDB
Q.14 Which factor differentiates cold storage from hot storage?
Data encryption
Access speed
Cost of hardware
Use of SSDs
Explanation - Cold storage is slower and cheaper, ideal for archival data, while hot storage offers fast access.
Correct answer is: Access speed
Q.15 What does multi-tenancy in cloud databases mean?
A database used by only one client
A database isolated from applications
A single database instance serving multiple clients
A database replicated across regions
Explanation - Multi-tenancy allows multiple clients to share the same database instance with logical separation.
Correct answer is: A single database instance serving multiple clients
Q.16 Which of the following is a cloud-based data warehouse?
MongoDB Atlas
Amazon Redshift
Cassandra
Redis
Explanation - Amazon Redshift is a fully managed cloud data warehouse for analytics and big data processing.
Correct answer is: Amazon Redshift
Q.17 What does ACID property in cloud databases ensure?
Speed of data access
Consistency and reliability of transactions
Data redundancy
Encryption
Explanation - ACID properties ensure reliable database transactions by enforcing Atomicity, Consistency, Isolation, and Durability.
Correct answer is: Consistency and reliability of transactions
Q.18 Which database service is Azure’s globally distributed NoSQL option?
Azure SQL Database
Cosmos DB
Azure Data Lake
MySQL on Azure
Explanation - Cosmos DB is Azure's globally distributed NoSQL database service supporting multiple models.
Correct answer is: Cosmos DB
Q.19 Which of these is most suitable for analytics workloads?
NoSQL Databases
In-memory cache
Data warehouses
Block storage
Explanation - Data warehouses like Amazon Redshift or Snowflake are optimized for analytics and reporting.
Correct answer is: Data warehouses
Q.20 Which storage system organizes data in key-value pairs?
Object storage
File storage
Block storage
Tape storage
Explanation - Object storage organizes data as objects with metadata and unique keys, unlike block or file storage.
Correct answer is: Object storage
Q.21 Which cloud service provides an in-memory caching database?
Amazon ElastiCache
Amazon S3
Google BigQuery
Azure Data Factory
Explanation - Amazon ElastiCache provides Redis and Memcached as in-memory caching services.
Correct answer is: Amazon ElastiCache
Q.22 Which of these supports schema-less data storage?
PostgreSQL
MySQL
MongoDB
Oracle
Explanation - MongoDB is a NoSQL database that supports schema-less JSON-like documents for flexibility.
Correct answer is: MongoDB
Q.23 In cloud storage, latency is primarily affected by:
Data encryption
Physical distance of servers
File size
Storage type
Explanation - Data latency depends largely on the distance between client and server, besides network conditions.
Correct answer is: Physical distance of servers
Q.24 Which of the following is NOT a benefit of cloud storage?
Automatic backups
Global accessibility
Unlimited scalability
Guaranteed zero cost
Explanation - Cloud storage offers scalability, availability, and backups but comes at a cost depending on usage.
Correct answer is: Guaranteed zero cost
Q.25 Which cloud storage option is best for frequently accessed data?
Cold storage
Hot storage
Archive storage
Offline tapes
Explanation - Hot storage is optimized for low-latency access to frequently used data, unlike cold or archival storage.
Correct answer is: Hot storage