ServiceNow Senior Research Fellow Interview Questions and Answers

Data Structure related questions

Q1. Java related interview questions
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Q1. Advantage and disadvantage of framework.
Ans. 
Frameworks provide structure and pre-built components for software development, but can also limit flexibility and require learning curve.
• Advantage: Provides structure and pre-built components for faster development

• Advantage: Can improve code quality and maintainability

• Disadvantage: Can limit flexibility and customization

• Disadvantage: Requires learning curve and potential dependency issues

• Example: ReactJS provides a fr...read more
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Q1. What is Oops? Advantage and disadvantage
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Oops stands for Object-Oriented Programming. It is a programming paradigm that uses objects to represent real-world entities.
• Advantages: code reusability, modularity, encapsulation, inheritance, polymorphism

• Disadvantages: complexity, steep learning curve, performance overhead

• Example: creating a class 'Car' with properties like 'make', 'model', and 'year', and methods like 'start_engine' and 'stop_engine'
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Q1. They asked questions related your project and technical questions
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You have to do programming test. This is based on logical question.

Basic DSA leet code.

DSA medium level questions

Q1. JS based questions, event loop
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Q2. Tricky questions based on output - JS concepts
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Q1. Machine Coding round on JS, Html, Css
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Q2. Questions on performance optimization, security
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Q1. Questions on trees and graph
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Q2. System design and data model
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Aptitude test was provided for 45 mins

Q1. OOPS, virtual, inheritance
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