Rrootshell Technologiiss Interview Questions, Process, and Tips

I am a recent graduate with a degree in Computer Science, passionate about coding and eager to learn and grow in the software development field.

• Recent graduate with a degree in Computer Science

• Passionate about coding and software development

• Eager to learn and grow in the field

Types of databases include relational, NoSQL, object-oriented, and graph databases.

• Relational databases store data in tables with rows and columns (e.g. MySQL, PostgreSQL)

• NoSQL databases store data in a non-tabular format, often using JSON or XML (e.g. MongoDB, Cassandra)

• Object-oriented databases store data as objects, with attributes and methods (e.g. db4o)

• Graph databases use graph structures for semantic queries (e.g

Microservices are important for scalability, flexibility, and fault isolation. Real-time use cases include e-commerce, banking, and IoT.

• Microservices allow for independent development and deployment of small, focused services.

• They enable scalability by allowing each service to be scaled independently.

• Microservices provide flexibility to choose different technologies for different services.

• They facilitate fault isolatio...read more

User authentication and authorization in MEAN stack is handled using Passport.js and JSON Web Tokens (JWT).

• Passport.js is used for authentication, providing various strategies like local, OAuth, etc.

• JWT is used for authorization, generating and validating tokens for authenticated users.

• User credentials are stored securely in the database, usually hashed and salted.

• Middleware functions are used to protect routes and ver...read more