TO THE NEW Interview Questions, Process, and Tips

Q1. Difference between first() or FirstOrDefault()
Ans. 
first() returns the first element of a sequence, while FirstOrDefault() returns the first element or a default value if the sequence is empty.
• first() throws an exception if the sequence is empty, while FirstOrDefault() returns a default value (e.g. null) in that case.

• Use first() when you expect the sequence to always have at least one element, and FirstOrDefault() when the sequence might be empty.

• Example: var numbers =...read more
Answered by AI
Add your answer
Q2. Left join vs right join
Ans. 
Left join includes all records from the left table and matching records from the right table, while right join includes all records from the right table and matching records from the left table.
• Left join: includes all records from the left table and matching records from the right table

• Right join: includes all records from the right table and matching records from the left table

• Example: Left join - SELECT * FROM table1...read more
Answered by AI
Add your answer
Q3. Optimization of SQL query
Ans. 
Optimizing SQL queries involves using indexes, minimizing joins, and avoiding unnecessary columns.
• Use indexes on columns frequently used in WHERE clauses

• Minimize the use of JOIN operations

• Avoid selecting unnecessary columns in the query

• Consider using stored procedures for frequently executed queries
Answered by AI
Add your answer
Q4. Tool used to check query slowness
Ans. 
One tool used to check query slowness is SQL Server Profiler.
• SQL Server Profiler can be used to trace and analyze query performance.

• It provides detailed information on query execution, including duration, reads, writes, and more.

• Users can identify slow queries and optimize them for better performance.

• Other tools like Query Store in SQL Server Management Studio can also be used for monitoring query performance.
Answered by AI
Add your answer
Q5. Design repository pattern using EF core
Ans. 
Repository pattern using EF core for data access layer
• Create an interface for the repository with generic CRUD methods

• Implement the repository interface with EF core for data access

• Use dependency injection to inject the repository into services

• Separate concerns by having repositories handle data access logic
Answered by AI
Add your answer

Q1. Aws cloud and linux questions mostly
Add your answer
Q2. Linux boot process
Add your answer

Q1. Tech and managerial questions related to aws, linux and docker?
Add your answer

Q1. Salary discussion and managerial round
Add your answer

Simple logical based

Palindrome
Reverse a string

Q1. Oops pillar define and explain
Ans. 
The four pillars of Object-Oriented Programming (OOP) are Abstraction, Encapsulation, Inheritance, and Polymorphism.
• Abstraction: Hides complex implementation details and only shows the necessary features to the outside world.

• Encapsulation: Bundles data and methods that operate on the data into a single unit, preventing direct access to data from outside the class.

• Inheritance: Allows a new class to inherit properties an...read more
Answered by AI
Add your answer

Easy to normal level

Array and string questions

Q1. Questions related to JAVA language
Add your answer
Q2. OOPS concept questions real life examples
Add your answer