CES Principal Engineer Interview Questions and Answers

I was tasked with creating a Spring Boot microservice.

Q1. Core java in depth
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Q2. Javascript in depth
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Javascript is a versatile programming language commonly used for web development.
• Javascript is a high-level, interpreted programming language.

• It is used for adding interactivity to websites, creating web applications, and building server-side applications.

• Javascript can manipulate the DOM, handle events, and make asynchronous requests using AJAX.

• It supports object-oriented, functional, and imperative programming styles...read more
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Q1. .Net core and Azure
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Q2. Scenario based questions
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Regex and aptitude discussion

Q1. Expectations asked
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Q1. What is volatile how to use gdb what is singleton
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Questions on volatile, gdb usage, and singleton pattern.
• Volatile is a keyword in C that tells the compiler not to optimize the variable.

• GDB is a debugger tool used to analyze and debug code during runtime.

• Singleton is a design pattern that restricts the instantiation of a class to one object.

• To use GDB, compile the code with the -g flag, run the executable with gdb, set breakpoints, and use commands like 'next' and 'pr...read more
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Q1. Basic ruby questions
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Q1. Some deep questions in ruby
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Use case was given to solve

Q1. This was client round , asked about coding solution and asked to write specs
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Q1. Basic HR questions
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Q1. What is callback in Javascript?
Ans. 
A callback in JavaScript is a function passed as an argument to another function, to be executed later.
• Callback functions are commonly used in asynchronous programming.

• They allow for functions to be executed after another function has finished executing.

• Example: setTimeout function in JavaScript takes a callback function as an argument to be executed after a specified time.
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Frontend application architecture