Cloud Storage and Databases: A Comprehensive Guide for Online Learning

Question 1

Which of the following is a characteristic of object storage?

Accepted Answer

Files are accessed by name and metadata.

Accepted Answer

Suitable for storing large amounts of unstructured data.

Answer

Data is stored in fixed-size blocks.

Answer

Provides low latency for frequent read and write operations.

Question 2

Which type of cloud storage is best suited for storing and retrieving large, unstructured data such as images and videos?

Accepted Answer

Object storage

Answer

Database storage

Answer

Block storage

Answer

File storage

Question 3

In a cloud database, what is the primary purpose of a schema?

Accepted Answer

To define the structure, relationships, and constraints of the data stored in the database

Answer

To ensure the integrity and consistency of the data

Answer

To enhance query performance by optimizing data access

Question 4

In cloud computing, what is the primary role of NoSQL databases?

Accepted Answer

To effectively manage unstructured or semi-structured data that may not conform to traditional relational database models

Answer

To provide high levels of transaction consistency and data integrity

Answer

To serve as backup and recovery solutions for relational database systems

Answer

To guarantee data integrity in geographically distributed systems

Question 5

Which of the following is a common use case for distributed databases?

Accepted Answer

Managing large datasets that are distributed across multiple geographic locations or originating from various sources

Answer

Storing and protecting sensitive customer information that requires high levels of security

Answer

Supporting small-scale applications with limited data requirements

Question 6

Which of the following is NOT a primary type of cloud storage?

Accepted Answer

Network storage

Answer

Block storage

Answer

File storage

Answer

Object storage

Question 7

Which cloud storage service is provided by Microsoft Azure?

Accepted Answer

Azure Blob Storage

Answer

Amazon S3

Answer

Google Cloud Storage

Question 8

Which of the following is a characteristic of object storage?

Accepted Answer

Data is stored as immutable objects

Answer

Data is stored in hierarchical directories

Answer

Data is stored in fixed-size blocks

Answer

Data can only be accessed sequentially

Question 9

Which of the following is an advantage of using cloud databases?

Accepted Answer

Reduced infrastructure management costs

Answer

Improved data accuracy

Answer

Enhanced data security

Answer

Guaranteed data backup

Question 10

Which type of database is designed for storing and managing large amounts of unstructured data?

Accepted Answer

NoSQL database

Answer

Relational database

Answer

Object-oriented database

Answer

Hierarchical database

Question 11

Which cloud database service is provided by Google Cloud Platform?

Accepted Answer

Google Cloud SQL

Answer

Amazon Relational Database Service

Answer

IBM Db2 on Cloud

Answer

Azure Cosmos DB

Question 12

Which of the following is a significant feature of cloud databases?

Accepted Answer

Automatic backups and recovery

Answer

Dedicated customer support

Answer

Full control over software updates

Answer

Customizable hardware configurations

Question 13

Which scenario is most appropriate for utilizing a cloud database?

Accepted Answer

Managing data for a web application

Answer

Running complex scientific simulations

Answer

Storing financial records for a large corporation

Answer

Maintaining patient health records for a hospital

Question 14

Which of the following is a potential concern associated with utilizing cloud storage and databases?

Accepted Answer

Data privacy and security

Answer

Limited scalability

Answer

High latency

Question 15

Which of the following is NOT a primary type of cloud storage?

Accepted Answer

Relational database

Answer

Block storage

Answer

Object storage

Answer

File storage

Question 16

Which cloud storage service is provided by Amazon Web Services (AWS)?

Accepted Answer

S3 (Simple Storage Service)

Answer

Azure Blob Storage

Answer

GCP (Google Cloud Platform)

Question 17

What is a primary advantage of using object cloud storage?

Accepted Answer

Scalability and accessibility

Answer

Enhanced data security

Answer

Reduced hardware costs

Answer

Faster data processing

Question 18

Which type of database is most suitable for storing structured data in rows and columns with defined relationships?

Accepted Answer

Relational database

Answer

NoSQL database

Answer

Graph database

Answer

Document database

Question 19

What is a key feature of a NoSQL database?

Accepted Answer

Schema-less design

Answer

Fixed schema

Answer

Relational data model

Answer

Hierarchical data model

Question 20

Which cloud provider offers a popular managed NoSQL database service called Cosmos DB?

Accepted Answer

Azure

Answer

Google Cloud

Answer

AWS

Answer

IBM Cloud

Question 21

What is a primary purpose of creating an index in a database?

Accepted Answer

To improve data retrieval speed

Answer

To reduce data redundancy

Answer

To backup data

Answer

To secure sensitive data

Question 22

Which of the following is a common data type used in databases?

Accepted Answer

Integer

Answer

HTML

Answer

XML

Question 23

What is the primary difference between a primary key and a foreign key in a relational database?

Accepted Answer

A primary key uniquely identifies a row, while a foreign key references a primary key in another table

Answer

A primary key can be composite, while a foreign key cannot

Answer

A primary key is mandatory, while a foreign key is optional

Question 24

Which of the following is a best practice for designing a relational database schema?

Accepted Answer

Normalize the data to reduce redundancy

Answer

Avoid using foreign keys to maintain data integrity

Answer

Create tables with as many columns as possible

Answer

Use as many tables as possible

Question 25

Which of the following is NOT a type of cloud storage service?

Accepted Answer

Relational storage

Answer

File storage

Answer

Object storage

Answer

Block storage

Question 26

Which cloud storage service is provided by Amazon Web Services (AWS)?

Accepted Answer

S3

Answer

GCS

Answer

Azure Blob Storage

Question 27

What is a primary advantage of using cloud databases?

Accepted Answer

Scalability

Answer

High cost

Answer

Complex management

Answer

Limited data protection

Question 28

What is the primary distinction between a relational database and a NoSQL database?

Accepted Answer

Relational databases enforce relationships between data, while NoSQL databases do not.

Answer

NoSQL databases are faster than relational databases.

Answer

Relational databases are more scalable than NoSQL databases.

Question 29

Which of the following is a popular cloud database service provider?

Accepted Answer

MongoDB Atlas

Answer

Oracle Database

Answer

PostgreSQL

Answer

MySQL

Question 30

What is the primary purpose of a cloud storage gateway?

Accepted Answer

To connect on-premises storage to the cloud

Answer

To encrypt data before it is stored in the cloud

Answer

To cache data locally for faster access

Answer

To provide disaster recovery capabilities

Question 31

Which advantage is unique to block storage in cloud computing?

Accepted Answer

Provides low-latency access to data

Answer

It is more secure than other storage types.

Answer

It is easier to manage than file storage.

Answer

It is more cost-effective than object storage.

Question 32

Which of the following is a potential disadvantage of using cloud databases?

Accepted Answer

Vendor lock-in

Answer

Data security

Answer

High availability

Answer

Cost optimization

Question 33

What is the main benefit of utilizing a CDN (Content Delivery Network) in conjunction with cloud storage?

Accepted Answer

Improves content delivery speed and availability.

Answer

Reduces cloud storage costs

Answer

Protects data from unauthorized access

Question 34

Which of the following is NOT a type of cloud storage?

Accepted Answer

Database storage

Answer

Object storage

Answer

Block storage

Answer

File storage

Question 35

What is the primary use case for a Cloud SQL database?

Accepted Answer

Managing and scaling relational databases in the cloud

Answer

Hosting websites and applications

Answer

Storing unstructured data

Question 36

Which cloud provider offers a service called Bigtable?

Accepted Answer

Google Cloud Platform

Answer

IBM Cloud

Answer

Microsoft Azure

Answer

Amazon Web Services

Question 37

What is the key difference between object storage and file storage?

Accepted Answer

Object storage is optimized for unstructured data, while file storage is optimized for hierarchical data.

Answer

Object storage is more expensive than file storage.

Answer

Only object storage supports encryption.

Question 38

Which of the following is a key feature of a relational database?

Accepted Answer

Support for ACID transactions

Answer

Scalability to handle massive datasets

Answer

Flexibility in data modeling

Answer

Low cost of ownership

Question 39

What is the primary benefit of using a cloud database over an on-premises database?

Accepted Answer

Reduced infrastructure management overhead

Answer

Higher performance

Answer

Lower cost of ownership

Answer

Improved security

Question 40

Which of the following is a best practice for designing a database schema?

Accepted Answer

Normalize the data to minimize redundancy

Answer

Use as many tables as possible to improve performance

Answer

Store all data in a single table to simplify querying

Answer

Avoid using foreign keys to maintain referential integrity

Question 41

What is the purpose of a database index?

Accepted Answer

To speed up data retrieval by reducing the number of disk accesses

Answer

To compress the data to save storage space

Answer

To ensure the integrity of the data

Question 42

Which of the following is **not** a type of cloud storage?

Accepted Answer

Relational

Answer

File

Answer

Block

Answer

Object

Question 43

What is the primary purpose of a database management system (DBMS)?

Accepted Answer

To manage and organize data efficiently

Answer

To secure data from unauthorized access

Answer

To optimize database performance

Answer

To create and modify databases

Question 44

Which type of database is best suited for managing unstructured and flexible data?

Accepted Answer

NoSQL

Answer

SQL

Answer

Hierarchical

Answer

Network

Question 45

What is the distinction between a primary key and a foreign key in a database?

Accepted Answer

A primary key uniquely identifies a row, while a foreign key establishes a relationship between tables.

Answer

A primary key can be null, while a foreign key cannot.

Answer

A primary key is used to sort data, while a foreign key is used to filter data.

Question 46

What is the purpose of indexing in a database?

Accepted Answer

To enhance data retrieval performance

Answer

To compress data for storage optimization

Answer

To validate data integrity

Answer

To protect data from unauthorized access

Question 47

Which type of cloud storage service is ideal for storing large, immutable files like backups or media assets?

Accepted Answer

Object storage

Answer

NAS storage

Answer

File storage

Answer

Block storage

Question 48

Which of the following is a popular object storage service offered by Amazon Web Services (AWS)?

Accepted Answer

Amazon S3 (Simple Storage Service)

Answer

Rackspace Cloud Files

Answer

Azure Blob Storage

Answer

Google Cloud Storage

Question 49

What type of database is hosted and managed by a third-party provider in the cloud?

Accepted Answer

Database as a Service (DBaaS)

Answer

NoSQL database

Answer

In-memory database

Answer

Relational database

Question 50

Which cloud storage service is best suited for storing highly sensitive data that requires strong encryption and access control?

Accepted Answer

Encrypted file storage (with features like granular permissions and data encryption at rest)

Answer

Database storage

Answer

Object storage

Answer

Block storage

Question 51

Which of the following is a recommended best practice when designing a cloud-based database architecture?

Accepted Answer

Use a scalable and redundant database (to handle fluctuating workloads and ensure high availability)

Answer

Avoid using caching mechanisms (caching can significantly improve performance)

Answer

Store all data in a single database (this can lead to performance bottlenecks and single points of failure)

Answer

Minimize database connections (limiting connections can negatively impact application performance)

Question 52

Which cloud provider offers a managed PostgreSQL database service as part of their platform?

Accepted Answer

AWS RDS (Relational Database Service) for PostgreSQL

Answer

Azure Cosmos DB

Answer

Google Cloud Spanner

Answer

MongoDB Atlas

Question 53

What is a key benefit of utilizing a cloud-based database backup service?

Accepted Answer

Automated backups and recovery (reducing manual effort and ensuring data integrity)

Answer

Reduced storage costs (cloud backups can be cost-effective, but not the key advantage)

Answer

Improved performance (backups typically don't directly impact performance)

Answer

Increased data accessibility (cloud backups can improve data accessibility, but it's not the primary benefit)