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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Q1. 1. What is a loop in switching? 2. How do you say vlan 200 working on switch? 3. How do you say ethernet frame is tagged or untagged? 4. Regarding project 5. Python string slicing 6. Max vlans allowed on s...read more
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Technical questions related to switching, VLANs, and Python string slicing for Lead Engineer position.
• A loop in switching occurs when a broadcast packet is forwarded endlessly between switches.

• To say VLAN 200 is working on a switch, you can check the VLAN database or use the show vlan command.

• An ethernet frame is tagged when it has a VLAN ID added to its header, and untagged when it does not.

• Regarding the project, prov...read more
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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?
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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