cloudEQ Interview Questions, Process, and Tips

Creating API Documentation

Q1. Tell me about yousrself
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I am a highly experienced Senior Software Engineer with a strong background in developing scalable and efficient software solutions.
• Over 10 years of experience in software development

• Expertise in multiple programming languages such as Java, C++, and Python

• Proficient in designing and implementing complex systems

• Strong problem-solving and analytical skills

• Proven track record of delivering high-quality software on time an...read more
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Q2. What is current project and what is tech stack used in it?
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I am currently working on a web application for a retail company using React, Node.js, and MongoDB.
• Developing a responsive UI using React and Redux

• Implementing server-side logic using Node.js and Express

• Storing and retrieving data using MongoDB

• Integrating third-party APIs for payment processing and shipping

• Writing automated tests using Jest and Enzyme
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Q3. Is Authentication implemented in project and if yes How?
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Yes, authentication is implemented using OAuth 2.0 protocol.
• OAuth 2.0 protocol is used for authentication.

• Access tokens are issued to authorized clients.

• Refresh tokens are used to obtain new access tokens.

• Authentication is required for all API endpoints.
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Q4. What is Dependency Injection and Is is implemented in project and How?
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Dependency Injection is a design pattern used to remove hard-coded dependencies and make code more flexible and testable.
• Dependency Injection is implemented by injecting the required dependencies into a class rather than creating them within the class.

• This can be achieved through constructor injection, setter injection, or interface injection.

• For example, in Java, Spring Framework provides a powerful dependency injecti...read more
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Q5. What are Action Filters? Why these are used?
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Action Filters are attributes that can be applied to controller actions to perform pre/post processing.
• Action Filters are used to modify the behavior of controller actions.

• They can be used to perform authentication, logging, caching, etc.

• Action Filters can be applied globally or to specific actions.

• Examples include [Authorize] for authentication and [OutputCache] for caching.

• Action Filters can also be created by the de
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Q6. What is Interfaces? and Why these are used?
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Interfaces are a way to define a contract between two objects, specifying the methods and properties that one object must implement.
• Interfaces allow for loose coupling between objects, making it easier to change the implementation of one object without affecting others.

• They promote code reusability by allowing multiple objects to implement the same interface.

• Interfaces can be used to create mock objects for testing pur...read more
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Q7. What is the difference in Interfaces and Abstract classes?
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Interfaces define contracts for behavior while abstract classes provide partial implementation.
• Interfaces cannot have implementation while abstract classes can have partial implementation.

• A class can implement multiple interfaces but can inherit from only one abstract class.

• Interfaces are used for loose coupling while abstract classes are used for code reuse.

• Example: An interface 'Drawable' can define a method 'draw' w...read more
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Q8. What is shallow copy in C#?
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Shallow copy creates a new object with same values as original, but references the same memory locations.
• Shallow copy only copies the top-level object, not the nested objects.

• Changes made to the original object will reflect in the copied object.

• Use MemberwiseClone() method to create shallow copy of an object.

• Example: int[] arr1 = {1, 2, 3}; int[] arr2 = arr1.Clone() as int[]; arr2[0] = 4; Console.WriteLine(arr1[0]); //
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Q9. What are ref and out keywords? and What is the difference in them?
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Ref and out are keywords used in C# to pass arguments by reference instead of value.
• Ref and out are used to pass arguments by reference instead of value

• Ref keyword is used to pass a reference of the variable to the method

• Out keyword is used to pass a reference of the variable to the method and requires the variable to be initialized before use

• Ref keyword can be used to modify the value of the variable passed as an argu...read more
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Q10. Difference in String and String Builder?
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String is immutable while StringBuilder is mutable.
• String is a final class and its value cannot be changed once created.

• StringBuilder is a mutable class and its value can be changed without creating a new object.

• String concatenation creates a new String object each time, while StringBuilder is more efficient for concatenation.

• Use String for fixed values and StringBuilder for dynamic values.
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Q11. What is Self Join in SQL Server? Give example
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Self Join is a way to join a table with itself using aliases.
• It is useful when we need to compare records within the same table.

• It requires the use of aliases to differentiate between the two instances of the same table.

• Example: SELECT a.name, b.name FROM employees a, employees b WHERE a.manager_id = b.employee_id;
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Q12. What are delegate and how they are used?
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Delegates are a type-safe function pointer used to encapsulate a method.
• Delegates allow methods to be passed as parameters to other methods.

• They can be used to implement callbacks and event handlers.

• Delegates can be chained together to create a pipeline of method calls.

• They are commonly used in .NET framework for event handling and LINQ queries.
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Q13. What is Normalization in sql server?
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Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down a table into smaller tables and defining relationships between them.

• There are different levels of normalization, with each level reducing redundancy and improving data integrity further.

• Normalization helps to prevent data inconsistencies and anomalies, and makes it easier to...read more
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Q14. Difference in Overriding and Overloading?
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Overriding is when a subclass provides its own implementation of a method from the superclass, while overloading is when a class has multiple methods with the same name but different parameters.
• Overriding is used to provide a specific implementation of a method in a subclass that is already defined in the superclass.

• Overloading is used to define multiple methods with the same name but different parameters in a class.

• Ov...read more
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Q15. Difference in IEnumerable and IQueryable?
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IEnumerable is in-memory collection while IQueryable is a queryable data source.
• IEnumerable is used for querying data from in-memory collections like List, Array, etc.

• IQueryable is used for querying data from a data source like a database.

• IEnumerable executes the query on the client-side while IQueryable executes the query on the server-side.

• IQueryable is more efficient when working with large datasets as it allows for...read more
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Q16. Diifference in Value Type and Refence Type? Is String is Value Type or Reference Type?
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Value types hold the data directly, while reference types hold a reference to the data.
• Value types are stored on the stack, while reference types are stored on the heap.

• String is a reference type in .NET.

• Value types include int, float, and bool.

• Reference types include arrays, classes, and interfaces.
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Q1. What is indexing? Different types of indexes?
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Indexing is a technique to improve database performance by reducing the time taken to retrieve data.
• Indexes are created on one or more columns of a table.

• Types of indexes include clustered, non-clustered, unique, and full-text indexes.

• Clustered indexes determine the physical order of data in a table.

• Non-clustered indexes are separate structures that contain a copy of the indexed columns and a pointer to the actual data...read more
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Q2. How do you optimize your select statements in SQL?
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Optimize select statements by using indexes, avoiding unnecessary joins, and limiting the number of columns selected.
• Use indexes to speed up queries

• Avoid unnecessary joins and subqueries

• Limit the number of columns selected

• Use WHERE clauses to filter results

• Use GROUP BY and ORDER BY clauses wisely

• Consider using stored procedures or views

• Regularly analyze and optimize the database
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Q3. Given an employee details table, find out the highest salary of each department
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Q1. What are stored procedures?
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Stored procedures are pre-written SQL codes that can be saved and reused in a database.
• Stored procedures are used to improve database performance and security.

• They can be called from within an application or directly from the database.

• They can accept input parameters and return output parameters or result sets.

• Examples include procedures for inserting, updating, and deleting data.

• They can also be used for complex data
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Q2. What is the last project you have worked on?
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Q3. What are joins? what is a view?
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Joins are used to combine data from two or more tables based on a related column. A view is a virtual table created from a query.
• Joins are used to retrieve data from multiple tables based on a related column

• There are different types of joins such as inner join, left join, right join, and full outer join

• Views are virtual tables created from a query that can be used to simplify complex queries or restrict access to sensi...read more
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Q1. Microservices, devops, azure related questions.
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Q1. In depth questioning on all technical aspects of software development
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Article related to cloud platform

Q1. Tel me about yourself
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Q2. What's sdlc and ddlc
Ans. 
SDLC stands for Software Development Life Cycle, while DDLC stands for Document Development Life Cycle.
• SDLC is a process used by software development teams to design, develop, and test high-quality software products.

• DDLC is a process used by technical writers to create, review, and publish accurate and user-friendly documentation.

• Examples of SDLC stages include planning, design, coding, testing, and maintenance.

• Example...read more
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Q1. What is IIFE in JavaScript?
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IIFE stands for Immediately Invoked Function Expression. It is a function that is executed as soon as it is defined.
• IIFE is enclosed in parentheses () to make it an expression.

• It is followed by another set of parentheses () to invoke the function immediately.

• It is commonly used to create a private scope for variables and functions.

• Example: (function() { console.log('Hello World!'); })();
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Q2. How promises works in JavaScript?
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Promises in JavaScript are used to handle asynchronous operations and avoid callback hell.
• Promises represent a value that may not be available yet but will be resolved at some point in the future.

• They have three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() and .catch() methods.

• They can also be used with async/await syntax.

• Example: new Promise((resolve, reject) => {...}).then(result => {
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