Photon Interactive Node JS Developer Interview Questions and Answers

Q1. Node js basic questions
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Q1. Explain exceptional handling
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Exception handling is a mechanism to handle runtime errors in a program.
• Exception handling helps in gracefully handling unexpected errors in a program.

• It prevents the program from crashing and allows for proper error logging and recovery.

• Commonly used keywords in exception handling are try, catch, finally, and throw.

• Example: try { // code that may throw an exception } catch(Exception ex) { // handle the exception }
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Q2. Explain difference between abstract and interfaces
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Abstract classes can have implementation details while interfaces cannot.
• Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.

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

• Abstract classes can have constructors, fields, and properties, while interfaces cannot.

• Abstract classes are used when some common functionality ne...read more
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Q3. One coding question on arrays
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2 Basic Programsl on LRU amd strings

Q1. Core java , java 8 concepts, spring core concepts
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Q1. Salary discussion
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Q1. Policy briefing
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Q1. All about oops basic concept
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Q1. All about JavaScript and jquery
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Q1. All about past project and challenges
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Q1. Java,sql,springboot
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Q1. Java, sql, spring, springboot, microservice, junit, puzzle or codinques
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Q1. Basic hr questions
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Coding test regarding the tools and technologies

Q1. Asked about the connections
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Q2. Questions on coding
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Q1. Basic knowledge
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Q1. Salary discussion
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