Wipro Module Lead Interview Questions and Answers

The .NET Framework is a software framework developed by Microsoft that provides a large library of pre-coded solutions to common programming problems.

• Developed by Microsoft

• Provides a large library of pre-coded solutions

• Supports multiple programming languages

• Used for building applications for Windows, web, mobile, and cloud

• Consists of Common Language Runtime (CLR) and class library

LINQ stands for Language Integrated Query.

• LINQ is a set of features introduced in .NET Framework that allows for querying data from different data sources using a uniform syntax.

• LINQ can be used to query objects, databases, XML, and more.

• LINQ provides a consistent model for working with data regardless of the data source.

• Example: var query = from c in customers where c.City == 'London' select c;

Clustered index determines the physical order of data in a table, while non-clustered index does not.

• Clustered index physically reorders the table data based on the indexed column

• Non-clustered index creates a separate structure to store the index data

• Clustered index is faster for retrieval but slower for insert and update operations

• Non-clustered index is slower for retrieval but faster for insert and update operations

UNION combines the result sets of two or more SELECT statements, while UNION ALL does the same but includes duplicate rows.

• UNION removes duplicate rows from the result set, while UNION ALL includes all rows

• UNION is slower than UNION ALL because it performs a distinct operation

• UNION requires that all SELECT statements have the same number of columns with compatible data types

• Example: SELECT column1 FROM table1 UNION SEL...read more

Expected salary should be based on industry standards, experience, skills, and responsibilities of the role.

• Research industry standards for the specific role and location

• Consider your level of experience and skills

• Factor in the responsibilities and expectations of the position

• Be prepared to negotiate based on the company's budget and benefits package

I would join your company because of its reputation for innovation and growth opportunities.

• Reputation for innovation in the industry

• Opportunities for growth and advancement

• Positive company culture and values

• Exciting projects and challenges to work on

Optimizing a React application involves reducing bundle size, improving rendering performance, and implementing code splitting.

• Use code splitting to load only necessary code for each page

• Minimize bundle size by removing unused dependencies and optimizing images

• Use React.memo and shouldComponentUpdate to prevent unnecessary re-renders

• Use lazy loading to defer loading of non-critical components

• Use server-side rendering t...read more

Shadow DOM is a way to encapsulate the styling and behavior of a web component.

• Shadow DOM allows for creating isolated DOM trees within a larger document.

• It helps to prevent CSS conflicts and JavaScript collisions between different parts of a web page.

• Shadow DOM can be used to create reusable web components that can be easily shared and used across different projects.

• It is supported by all modern browsers including Chr...read more

useMemo is used for memoization of a value, while useCallback is used for memoization of a function.

• useMemo returns a memoized value, while useCallback returns a memoized function.

• useMemo is used to optimize expensive computations, while useCallback is used to optimize expensive function creation.

• useMemo takes a function and an array of dependencies, while useCallback takes a function and an array of dependencies and r...read more

A pure function is a function that always returns the same output for a given input and has no side effects.

• Pure functions are deterministic and have no side effects.

• They only depend on their input parameters and not on any external state.

• Pure functions are easier to test and reason about than impure functions.

• Examples of pure functions include mathematical functions like sin(x) and cos(x).