Junior Fullstack Dot Net Developer

Junior Fullstack Dot Net Developer Interview Questions and Answers

Updated 29 Jan 2025

Q1. If the variable is declared without using any keywords in js, what is the default variable keyword which is implicitly declared? What are strict equality and loose equality?

Ans.

The default variable keyword in JavaScript is 'var'. Strict equality checks both value and type, while loose equality only checks value.

Default variable keyword in JavaScript is 'var'
Strict equality (===) checks both value and type
Loose equality (==) only checks value

Q2. What are SQL constraints? Joins ? What are index and views? What are having and where clause difference?

Ans.

SQL constraints are rules that enforce data integrity, joins are used to combine data from multiple tables, indexes improve query performance, views are virtual tables, and having and where clauses filter data differently.

SQL constraints ensure data integrity by enforcing rules on columns (e.g. NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY).
Joins are used to combine data from multiple tables based on a related column (e.g. INNER JOIN, LEFT JOIN, RIGHT JOIN).
Indexes are data stru...read more

Junior Fullstack Dot Net Developer Interview Questions and Answers for Freshers

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Q3. What is MVC? What is boxing and unboxing? What is ado.net? How can you pass the data in MVC?

Ans.

MVC is a software architectural pattern used in web development. Boxing and unboxing are operations to convert value types to reference types and vice versa. ADO.NET is a data access technology in .NET framework.

MVC stands for Model-View-Controller, where Model represents the data, View represents the UI, and Controller handles user input and updates the model.
Boxing is the process of converting a value type to an object type, while unboxing is the reverse operation.
ADO.NET i...read more

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