Chetu

Q2. Two Sum You are given an array of integers 'ARR' of length 'N' and an integer Target. Your task is to return all pairs of elements such that they add up to Target. Note: We cannot use the element at a given ind...

Q3. Intersection of Linked List You are given two Singly Linked List of integers, which are merging at some node of a third linked list. Your task is to find the data of the node at which merging starts. If there i...

Q4. Rat In A Maze You are given a starting position for a rat which is stuck in a maze at an initial point (0, 0) (the maze can be thought of as a 2-dimensional plane). The maze would be given in the form of a squa...

Q5. Suppose a rumour happens in company which is not good for it. What will be your reaction as a TM?

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Answer

As a TM, I would investigate the rumour and take necessary actions to address it. I would gather information about the rumour and its source. I would communicate with the team to understand their concerns and address them. I would take necessary actions to prevent the spread of the rumour and maintain a positive work environment. I would work with HR and management to address any underlying issues that may have caused the rumour. I would ensure that the company's reputation ...

Question 6

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Q6. OOPS
When can you use super keyword?

Question 7

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Q7. What is middleware and how we handle request and response ?

Answer

Middleware is software that acts as a bridge between different applications or components, handling requests and responses. Middleware is a layer of software that sits between different applications or components, facilitating communication and data exchange. It can handle tasks such as authentication, logging, error handling, and data transformation. Middleware can be used to modify or enhance the request or response before it reaches its destination. Examples of middleware...

Question 8

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Q8. What is the difference between delete and truncate?

Answer

Delete removes specific rows while truncate removes all rows from a table. Delete is a DML command while truncate is a DDL command. Delete is slower than truncate as it logs each row deletion while truncate only logs the deallocation of data pages. Delete can be rolled back while truncate cannot be rolled back. Delete can have a WHERE clause to specify which rows to delete while truncate removes all rows. Delete does not reset the identity of the table while truncate resets ...

Question 9

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Q9. SQL Question
Write a query that joins two tables A and B having common attribute ID and selects records(ID_NAME) that have
matching ID values in both tables.

Question 10

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Q10. DBMS Question
What are different types of joins in SQL?

Question 11

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Q11. What is the significance of Sql joins in database management

Answer

Sql joins are used to combine rows from two or more tables based on a related column between them. Joins are essential for retrieving data from multiple tables in a database Types of joins include inner join, outer join, left join, and right join Example: SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

Question 12

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Q12. What is OOP’s Concept and how using in DotNet

Answer

OOP stands for Object-Oriented Programming, a programming paradigm based on the concept of objects. OOP focuses on creating objects that contain data and methods to manipulate that data. In DotNet, OOP is implemented using classes and objects. Classes define the blueprint for objects, while objects are instances of classes. Encapsulation, inheritance, and polymorphism are key principles of OOP that are utilized in DotNet development. Example: In DotNet, you can create a clas...

Question 13

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Q13. What is difference between list and tupple?

Answer

List is mutable and can be modified, while tuple is immutable and cannot be changed. List is defined using square brackets [], while tuple is defined using parentheses (). Elements in a list can be modified, added, or removed, while elements in a tuple cannot be changed once defined. Lists are typically used for collections of similar items that need to be modified, while tuples are used for fixed collections of items. Example: list_example = [1, 2, 3] and tuple_example = (4...

Question 14

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Q14. What is difference between clone and copy?

Answer

Clone creates a new object with the same values and references as the original, while copy creates a new object with the same values but different references. Clone creates a deep copy of an object, while copy creates a shallow copy. Changes made to the original object will affect the cloned object, but not the copied object. Cloning is used to create an exact replica of an object, while copying is used to duplicate an object with different references. Example of cloning: Ob...

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Q15. ask introduction. what is logistic regression. how to remove multicollinearity . what is test error. it last for 20 minutes.

Answer

Logistic regression is a statistical model used to predict the probability of a binary outcome based on one or more predictor variables. Logistic regression is used when the dependent variable is binary (e.g. 0 or 1). To remove multicollinearity in logistic regression, you can use techniques like dropping one of the correlated variables or using regularization methods like Lasso or Ridge regression. Test error in logistic regression refers to the error rate of the model when...

Question 16

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Q16. Difference between Abstract and Interface. Explain any scenario where these concept are used.

Answer

Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are contracts that define methods that must be implemented by a class. Abstract classes can have constructors while interfaces cannot A class can implement multiple interfaces but can only inherit from one abstract class Abstract classes can have instance variables while interfaces cannot Interfaces are used to achieve abstraction and provide loose couplin...

Question 17

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Q17. OOPS
What do you mean by data encapsulation?

Question 18

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Q18. Java
What do you know about JIT compiler?

Question 19

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Q19. What is Mvc and what is the role in DotNet

Answer

MVC stands for Model-View-Controller. It is a design pattern used in DotNet for separating concerns in an application. Model represents the data and business logic of the application. View is responsible for displaying the user interface. Controller handles user input and updates the model and view accordingly. MVC helps in achieving separation of concerns, making the code more organized and maintainable. Example: In a DotNet MVC application, the model could be a class repre...

Question 20

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Q20. Java
Explain the use of final keyword in variable, method and class.

Question 21

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Q21. SQL Question
What are Constraints in SQL?

Question 22

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Q22. DBMS Question
Explain the concept of ACID properties in DBMS?

Question 23

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Q23. What are the types of joins in Ms Sql

Answer

Types of joins in Ms Sql include inner join, left join, right join, and full outer join. Inner join: Returns rows when there is at least one match in both tables. Left join: Returns all rows from the left table and the matched rows from the right table. Right join: Returns all rows from the right table and the matched rows from the left table. Full outer join: Returns rows when there is a match in one of the tables.

Question 24

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Q24. What is store procedure in Ms Sql

Answer

A stored procedure in MS SQL is a precompiled collection of SQL statements that can be saved and reused. Stored procedures can improve performance by reducing the amount of data sent over the network. They can be used to encapsulate business logic and provide a layer of security by controlling access to data. Stored procedures can accept input parameters and return output parameters or result sets. Example: CREATE PROCEDURE GetEmployeeDetails AS SELECT * FROM Employees WHERE...

Question 25

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Q25. What is Artisan in laravel php framework?

Answer

Artisan is the command-line interface included with Laravel that provides a number of helpful commands for developers. Artisan is used to generate boilerplate code, run database migrations, and execute unit tests. Developers can also create their own custom Artisan commands. Some common Artisan commands include make:model, make:controller, and migrate. Artisan can be accessed through the command line by running 'php artisan' followed by the desired command.

Question 26

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Q26. What is abstraction, inheritance and polymorphism. Explain each one in detail.

Answer

Abstraction, inheritance and polymorphism are three fundamental concepts in object-oriented programming. Abstraction is the process of hiding complex implementation details and providing a simplified interface for the user. Inheritance is the mechanism by which one class acquires the properties and behavior of another class. Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were objects of the same...

Question 27

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Q27. Varify this series 1,4,5,7,8,9 _ ?

Answer

The missing number is 6. The series is not in any particular pattern. The missing number is between 5 and 7. The answer is 6.

Question 28

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Q28. Different types of Oops and explain.

Answer

There are four main principles of Object-Oriented Programming: Inheritance, Encapsulation, Abstraction, and Polymorphism. Inheritance: Allows a class to inherit properties and behavior from another class. Encapsulation: Bundling data and methods that operate on the data into a single unit. Abstraction: Hiding the complex implementation details and showing only the necessary features of an object. Polymorphism: Allows objects to be treated as instances of their parent class.

Question 29

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Q29. .NET Question
What are the types of memories supported in the .NET framework?

Question 30

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Q30. MVC Routing and Attribute. How can we use two models in a one single view.

Answer

To use two models in a single view with MVC Routing and Attribute, we can create a ViewModel. Create a ViewModel that contains the properties of both models Populate the ViewModel with data from both models in the controller Pass the ViewModel to the view Access the properties of both models in the view using the ViewModel

Question 31

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Q31. What is dependency injection in .net

Answer

Dependency Injection is a design pattern used to remove hard-coded dependencies and make code more flexible and testable. It allows objects to be created with their dependencies supplied from outside. It helps in decoupling the code and makes it easier to maintain. It can be implemented using constructor injection, property injection, or method injection. Example: In ASP.NET MVC, we can use dependency injection to inject dependencies into controllers. Example: In .NET Core, ...

Question 32

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Q32. difference between union and union all.

Answer

Union combines and removes duplicates while Union All combines all rows. Union is used to combine the result sets of two or more SELECT statements into a single result set with no duplicates. Union All is used to combine the result sets of two or more SELECT statements into a single result set with all rows. Union is slower than Union All because it has to remove duplicates. Union requires that the number and order of columns in all SELECT statements be the same. Union All d...

Question 33

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Q33. Primary key and foreign key difference.

Answer

Primary key uniquely identifies a record while foreign key refers to a primary key in another table. Primary key is a column or set of columns that uniquely identifies a record in a table Foreign key is a column or set of columns that refers to a primary key in another table Primary key cannot have null values while foreign key can have null values Primary key is used to enforce data integrity while foreign key is used to establish relationships between tables

Question 34

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Q34. how many types of confussion matrix

Answer

There are three types of confusion matrices: binary, multi-class, and multi-label. Binary confusion matrix is used for classification problems with two classes. Multi-class confusion matrix is used for classification problems with more than two classes. Multi-label confusion matrix is used for problems where each instance can belong to multiple classes. Example: In a binary classification problem, the confusion matrix would have four cells: true positive, false positive, tru...

Question 35

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Q35. What are decorators?

Answer

Decorators are functions that modify the behavior of other functions or methods. Decorators are used to add functionality to existing functions without modifying their code. They are commonly used in Python to modify the behavior of functions or classes. Examples include @staticmethod, @classmethod, and @property decorators in Python.

Question 36

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Q36. Fibonacci sequence using recursion

Answer

Fibonacci sequence using recursion is a classic problem in programming. Define a recursive function that takes an integer n as input Base case: if n is 0 or 1, return n Recursive case: return the sum of the previous two Fibonacci numbers

Question 37

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Q37. What are the sealed classes?

Answer

Sealed classes are classes that cannot be inherited and are used to restrict class hierarchy. Sealed classes are declared using the 'sealed' keyword. They can have abstract members but cannot be instantiated. They are useful in creating exhaustive when expressions. They restrict the inheritance hierarchy and prevent unintended subclassing. Example: sealed class Shape { abstract fun draw() }

Question 38

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Q38. why deep learning is called as deep

Answer

Deep learning is called 'deep' because it involves multiple layers of neural networks. Deep learning uses multiple layers of neural networks to learn and make decisions. Each layer in a deep learning model extracts different features from the input data. The depth of the neural network refers to the number of layers it has. Deep learning models are able to learn complex patterns and relationships in data. Examples of deep learning models include Convolutional Neural Networks...

Question 39

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Q39. What is middleware? What are decorators?

Answer

Middleware is software that acts as a bridge between different applications or components. Middleware facilitates communication and data exchange between different software applications. It can be used to handle tasks such as authentication, logging, and error handling. Examples of middleware include Express.js in Node.js for handling HTTP requests and responses.

Question 40

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Q40. How to measure odometer?

Answer

Odometer can be measured by counting the number of rotations of the wheel and multiplying it by the circumference of the wheel. Measure the circumference of the wheel Count the number of rotations of the wheel Multiply the circumference by the number of rotations to get the distance traveled Use sensors to automate the process

Question 41

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Q41. How much byte in int?

Answer

An int is typically 4 bytes in size. The size of an int can vary depending on the programming language and platform. In C and C++, an int is typically 4 bytes on most platforms. In Java, an int is always 4 bytes. In Python, an int can be any size depending on the value it represents.

Question 42

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Q42. .NET Question
What is a delegate in .NET?

Question 43

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Q43. what is interface ?

Answer

An interface is a contract that specifies the methods and properties that a class must implement. An interface defines a set of methods and properties that a class must implement Interfaces are used to achieve abstraction and polymorphism Interfaces can be used to define contracts between different parts of a system A class can implement multiple interfaces Example: The IDisposable interface in C# is used to ensure that an object releases any unmanaged resources it is using ...

Question 44

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Q44. What is ddl command in SQL

Answer

DDL stands for Data Definition Language and is used to create, modify, and delete database objects in SQL. DDL commands include CREATE, ALTER, and DROP. CREATE is used to create a new database object like a table or index. ALTER is used to modify an existing database object. DROP is used to delete a database object. DDL commands are used to define the structure of a database. DDL commands are different from DML (Data Manipulation Language) commands which are used to manipula...

Question 45

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Q45. Java script difference b/w java script and jQuery anonymous function in java

Answer

JavaScript anonymous functions in jQuery are used to create functions without a name, while JavaScript functions are named functions. JavaScript functions are named and can be reused multiple times. jQuery anonymous functions are used for event handling and callbacks. JavaScript functions can be defined using the function keyword, while jQuery anonymous functions are created using the $ symbol.

Question 46

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Q46. .NET Question
What is the difference between Function and Stored procedure?

DOT NET Developer Interview

Question 47

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Q47. Difference between Stored procedure and functions when we use where we use what the profits of its?

Answer

Stored procedures are precompiled SQL queries stored in the database, while functions are user-defined routines that return a value. Stored procedures are used for performing specific tasks or operations on the database, while functions are used to return a single value. Stored procedures can contain multiple SQL statements and can have input and output parameters, while functions are more limited in their functionality. Stored procedures are generally used for complex busin...

Question 48

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Q48. What is sellery expectations.

Answer

Salary expectations refer to the amount of money a candidate expects to earn in a particular job position. It is important to research the industry standards and the company's budget before stating salary expectations. Candidates should consider their experience, skills, and qualifications when determining their salary expectations. Negotiation skills are important when discussing salary expectations with the employer. Salary expectations can be stated as a range rather than...

Question 49

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Q49. .NET Question
What is Zero Garbage Collectors?

Question 50

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Q50. HTTP Question
Explain how HTTP protocol works?

Question 51

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Q51. What is Oops Concept?

Answer

Oops Concept is a programming paradigm that focuses on objects and their interactions to solve problems. Oops stands for Object-Oriented Programming System It emphasizes on encapsulation, inheritance, and polymorphism Encapsulation is the process of hiding implementation details from the user Inheritance allows a class to inherit properties and methods from another class Polymorphism allows objects to take on multiple forms or behaviors Examples of Oops languages are Java, C...

Question 52

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Q52. What is midle ware in asp.net

Answer

Middleware in ASP.NET is software that sits between the web server and the application, providing additional functionality. Middleware can handle tasks such as authentication, caching, and logging. It can be added to the pipeline using the app.Use() method in the Startup class. Examples of middleware include the ASP.NET Core Authentication middleware and the Serilog middleware for logging. Middleware can be written as classes or functions that take a RequestDelegate paramete...

Question 53

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Q53. Create a decorator.

Answer

A decorator is a design pattern that allows behavior to be added to individual objects, either statically or dynamically. Decorators are used to add new functionality to an existing object without altering its structure. They are commonly used in Python to modify the behavior of functions or methods. Decorators are implemented using the @ symbol followed by the decorator function name.

Question 54

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Q54. Consept of this use and benifit?

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Answer

The question is unclear and lacks context. Please provide more information or rephrase the question. Without context, it is difficult to understand what is being asked. It is important to communicate clearly in technical interviews.

Question 55

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Q55. ASP .NET Question
What is Host in ASP.NET Core?

Question 56

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Q56. SQL Question
What are different types of joins in SQL?

Question 57

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Q57. C# reverse string program without using in build feature

Answer

Reverse a string in C# without using built-in features Create a character array from the input string Use two pointers to swap characters at the beginning and end of the array Continue swapping until the pointers meet in the middle

Question 58

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Q58. What is mixin and describe with the example.

Answer

Mixin is a way to reuse code in multiple classes by including the code in another class. Mixin allows for code reuse by combining methods and attributes from multiple classes into a single class. It helps in avoiding code duplication and promotes modular design. An example of mixin is a class 'Logger' that contains logging methods and can be included in other classes to enable logging functionality.

Question 59

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Q59. Deference between foreach and map ?

Answer

foreach is used to iterate over an array and perform an action on each element, while map creates a new array by applying a function to each element of an existing array. foreach does not return a new array, while map does foreach can only perform an action on each element, while map can transform each element foreach is useful for performing side effects, while map is useful for creating a new array with transformed elements

Question 60

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Q60. what is pure pipe and impure pipe?

Answer

Pure pipe and impure pipe are concepts in Angular framework for data transformation. Pure pipe is a pipe that is stateless and doesn't modify the input data. Impure pipe is a pipe that can have side effects and modify the input data. Pure pipes are more efficient as they are only executed when the input data changes. Impure pipes are executed on every change detection cycle, even if the input data remains the same. Pure pipes are denoted by the 'pure' keyword in Angular. Imp...

Question 61

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Q61. abstract class with example

Machine Learning Software Engineer Interview

Answer

Abstract class is a class that cannot be instantiated and can only be inherited by other classes. An abstract class can have abstract and non-abstract methods. Abstract methods have no implementation and must be implemented by the child class. Non-abstract methods can have implementation and can be inherited by the child class. An abstract class can have constructors and variables. Example: abstract class Animal { abstract void makeSound(); }

Question 62

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Q62. Remove space from given dataframe and concat the first and last name and add new column to dataframe.

Answer

Remove spaces from dataframe, concatenate first and last name, and add new column. Use str.replace() to remove spaces from dataframe columns. Use str.cat() to concatenate first and last name. Use df['new_column'] = concatenated_names to add new column.

Question 63

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Q63. what is boosting

Answer

Boosting is a machine learning ensemble technique that combines multiple weak learners to create a strong learner. Boosting iteratively trains a series of weak learners, where each subsequent learner focuses on the mistakes made by the previous ones. Popular boosting algorithms include AdaBoost, Gradient Boosting, and XGBoost. Boosting is often used in classification and regression problems to improve predictive performance.

Question 64

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Q64. HTTP Question
What is Session State in HTTP?