Interview Questions and Answers

OOPS concepts in Python include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance allows a class to inherit properties and methods from a parent class.

• Encapsulation refers to the practice of hiding implementation details from the user.

• Polymorphism allows objects to take on multiple forms or behaviors.

• Abstraction involves creating a simplified representation of complex real-world objects.

• Python supports all four OOPS concepts and allows for easy implementat...read more

Implementing proper security measures like encryption, access control, and regular backups can help prevent database manipulation.

• Use encryption to protect sensitive data from unauthorized access.

• Implement access control to restrict who can make changes to the database.

• Regularly backup the database to ensure data can be restored in case of manipulation.

• Use parameterized queries to prevent SQL injection attacks.

• Monitor database activity for any suspicious behavior.

Network layers are a hierarchical approach to organizing communication protocols.

• Network layers are used to break down communication into smaller, more manageable parts.

• Each layer has a specific function and communicates with the layers above and below it.

• The most commonly used model for network layers is the OSI model, which has 7 layers.

• Examples of network layer protocols include TCP/IP, HTTP, and FTP.

DBMS stands for Database Management System. It is a software that manages and organizes data in a structured manner.

• DBMS is used to create, retrieve, update, and delete data in databases.

• It provides a way to store and organize large amounts of data efficiently.

• DBMS ensures data integrity, security, and concurrency control.

• Examples of popular DBMS include MySQL, Oracle, SQL Server, and PostgreSQL.

Constraints in DBMS ensure data integrity and consistency.

• Constraints are rules that limit the type of data that can be inserted into a database table.

• They ensure data integrity and consistency by preventing invalid data from being entered.

• Examples of constraints include primary keys, foreign keys, unique constraints, and check constraints.