UnitedHealth Interview Questions, Process, and Tips

Q1. Why did you leave previous position
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Q1. Tell us about yourself
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Research paper paper one

Q1. Random forest splitting mechanisms details
Ans. 
Random forest uses decision trees to split data into subsets based on feature importance.
• Random forest builds multiple decision trees and selects the best split based on feature importance.

• Each decision tree splits data into subsets based on a randomly selected subset of features.

• The best split is determined by minimizing impurity or maximizing information gain.

• Random forest can handle missing values and outliers.

• Rando...read more
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Q2. ResNet architecture and skip connection related questions
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Q1. OCR related bounding box detection from image
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Q2. Deep learning based questions and details
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Q1. Salary discussion, current salary and expected
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Q2. About Optum, why you want to join
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Genral question easy and normal questions to be attended in aptitude

Q1. Self Introduction
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Q2. Genral question about your life
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They ask you open Hacker Earth site and choose some random programs and ask you to complete it.

Q1. What is multi threading
Ans. 
Multi threading is the ability of a program to perform multiple tasks concurrently.
• It allows for better utilization of CPU resources

• It can improve program performance and responsiveness

• Examples include web servers handling multiple requests simultaneously and video games rendering graphics while processing user input
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Q2. What is extend keyword
Ans. 
The extend keyword is used to add properties and methods to an existing object.
• Used in JavaScript to add properties and methods to an object

• Can be used to inherit properties and methods from a parent object

• Syntax: Object.assign(target, ...sources)

• Example: const obj1 = {a: 1}; const obj2 = {b: 2}; const obj3 = {...obj1, ...obj2};
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Q3. Explain override. Why we need virtual?
Ans. 
Override is used to provide a new implementation of a method in a subclass. Virtual is needed to allow the method to be overridden.
• Override is used to change the behavior of a method in a subclass

• Virtual is used to allow the method to be overridden in a subclass

• Without virtual, a subclass cannot override a method from its parent class

• Override is used to implement polymorphism in object-oriented programming
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Q4. Write a program to sort the array and remove duplicates.
Ans. 
Program to sort and remove duplicates from an array.
• Use built-in sort() method to sort the array in ascending order.

• Loop through the sorted array and remove duplicates using filter() method.

• Return the sorted and duplicate-free array.
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Q5. What is Is Relationship and As Relationship in oops?
Ans. 
Is Relationship and As Relationship are two types of relationships in object-oriented programming.
• Is Relationship is a type of relationship where one class is a subset of another class.

• As Relationship is a type of relationship where one class is a type of another class.

• Is Relationship is denoted by a solid line with a closed arrowhead pointing towards the superclass.

• As Relationship is denoted by a dotted line with an o...read more
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Q6. What are architectural, structural, behavioural design patterns? Why we need them?
Ans. 
Architectural, structural, and behavioral design patterns are reusable solutions to common software design problems.
• Architectural patterns define the overall structure of a software system

• Structural patterns describe how objects and classes can be combined to form larger structures

• Behavioral patterns focus on communication between objects and how they operate together

• Design patterns help to improve software quality, ma...read more
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Q1. Why you apply for job
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Q1. Coding question java question
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