BlueBinaries Engineering and Solutions Technical Lead Interview Questions and Answers

Q1. Explain Oops Concept
Ans. 
Oops Concept is a programming paradigm that focuses on objects and their interactions to solve complex problems.
• Oops Concept stands for Object-Oriented Programming

• It is based on the principles of encapsulation, inheritance, and polymorphism

• Encapsulation allows bundling of data and methods into a single unit called an object

• Inheritance enables the creation of new classes by inheriting properties and behaviors from exist...read more
Answered by AI
Add your answer

Q1. Explain ACID property in SQL
Ans. 
ACID property ensures that database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, and Durability.

• Atomicity ensures that a transaction is treated as a single unit of work, either all or none of its operations are executed.

• Consistency ensures that a transaction brings the database from one valid state to another.

• Isolation ensures that concurrent transactions do not interfere with ...read more
Answered by AI
Add your answer

Reverse Linked List.
Print left view of tree.
Find 3rd highest salary.
Multiple other SQL questions.

Q1. Design parking lot. How you handle scenario when 2 persons trying to take same slot.
Ans. 
Implement a parking lot system to handle scenarios where two persons try to take the same slot.
• Implement a reservation system where slots can be temporarily reserved by users before they actually park their vehicles.

• Use a timestamp to track when a slot was reserved to resolve conflicts between users trying to park in the same slot at the same time.

• Implement a queue system to handle situations where multiple users are w...read more
Answered by AI
Add your answer

Q1. OAuth 2.0 workflow
Add your answer
Q2. How to do DB partitioning
Ans. 
DB partitioning involves dividing a large database into smaller, more manageable parts.
• Identify key columns for partitioning

• Choose a partitioning strategy (range, list, hash, etc.)

• Implement partitioning using database-specific tools or commands

• Monitor and optimize partitioning for performance
Answered by AI
Add your answer

Q1. Tell me about yourself?
Add your answer
Q2. How much experience do you have ?
Add your answer

Normal coding test on DSA and LLD.

Q1. Explain Oops Concept
Ans. 
Oops Concept is a programming paradigm that focuses on objects and their interactions to solve complex problems.
• Oops Concept stands for Object-Oriented Programming

• It is based on the principles of encapsulation, inheritance, and polymorphism

• Encapsulation allows bundling of data and methods into a single unit called an object

• Inheritance enables the creation of new classes by inheriting properties and behaviors from exist...read more
Answered by AI
Add your answer

Q1. Explain ACID property in SQL
Ans. 
ACID property ensures that database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, and Durability.

• Atomicity ensures that a transaction is treated as a single unit of work, either all or none of its operations are executed.

• Consistency ensures that a transaction brings the database from one valid state to another.

• Isolation ensures that concurrent transactions do not interfere with ...read more
Answered by AI
Add your answer

Reverse Linked List.
Print left view of tree.
Find 3rd highest salary.
Multiple other SQL questions.

Q1. Design parking lot. How you handle scenario when 2 persons trying to take same slot.
Ans. 
Implement a parking lot system to handle scenarios where two persons try to take the same slot.
• Implement a reservation system where slots can be temporarily reserved by users before they actually park their vehicles.

• Use a timestamp to track when a slot was reserved to resolve conflicts between users trying to park in the same slot at the same time.

• Implement a queue system to handle situations where multiple users are w...read more
Answered by AI
Add your answer

1 hour on programming

1.5 hours on programming

Q1. Expected salary
Add your answer