Cotiviti Full Stack Software Developer Interview Questions and Answers

Q1. Basics of .Net Core, Difference between .Net Core and .Net Framework, Delegates, Middleware, Threads
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Q2. Reflection, DbContext
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Q3. Multithreading, Authorization
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Q4. Web API design, Pattern
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Q5. Basics of Oops, Solid principle
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Q1. Asked some technical questions about .net and asp .net MVC
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Q2. Famil background
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Q3. About my project and team
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2 online test where given where I need to complete 50 MCQ (tech) in 20min and 30MCQ in 12min.

Situtation based question and technical knowledge and skills

Q1. React and its features
Ans. 
React is a popular JavaScript library for building user interfaces.
• React allows for the creation of reusable UI components.

• It uses a virtual DOM for efficient rendering.

• React supports server-side rendering for improved performance.

• React can be used with other libraries like Redux for state management.

• React Native allows for building mobile applications using React.
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Q2. What is polymorphism
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method from its parent class, exhibiting polymorphic behavior.
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Q1. Difference between useMemo and Memo?
Ans. 
useMemo is a hook used for memoization in React to optimize performance, while Memo is a higher order component used for memoization.
• useMemo is a hook in React that memoizes a function and returns the memoized value.

• Memo is a higher order component in React that memoizes the component and prevents unnecessary re-renders.

• useMemo is typically used for memoizing expensive calculations or functions, while Memo is used for ...read more
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Q2. Is useState is async or sync
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Q3. Generators and Iterators
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Q4. Scss related queris
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Q5. Pseudo elements and psuedo classes
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Q6. Difference between array and sets
Ans. 
Arrays are ordered collections of elements with duplicate values allowed, while sets are unordered collections of unique elements.
• Arrays allow duplicate values, while sets do not.

• Arrays are ordered, while sets are unordered.

• Arrays are accessed by index, while sets do not have a specific order.

• Example: Array - [1, 2, 3, 3], Set - {1, 2, 3}
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Q7. What is closure
Ans. 
Closure is a function that has access to its own scope, as well as the scope in which it was defined.
• Closure allows a function to access variables from its outer scope even after the outer function has finished executing.

• It is created whenever a function is defined within another function.

• Closure is commonly used in event handlers, callbacks, and asynchronous code.
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Q1. Components hirerchy
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Q2. Linq query to get 2nd most price good
Ans. 
Use Linq query to find the 2nd most expensive item in a list of goods.
• Use OrderByDescending() to sort the goods by price

• Use Skip(1) to skip the most expensive item

• Use First() to get the 2nd most expensive item
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