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I applied via Approached by Company and was interviewed in Apr 2024. There was 1 interview round.
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I was interviewed before Sep 2022.
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I applied via Naukri.com and was interviewed before Nov 2022. There were 3 interview rounds.
Discussing about troubleshooting process in NOC.
I applied via Naukri.com and was interviewed before Jun 2020. There were 4 interview rounds.
Using Applied Electronics to prevent train accidents in IRCTC
Implement sensors to detect obstacles on tracks
Use GPS and communication systems to alert train drivers of potential dangers
Install automatic braking systems in case of emergency
Regular maintenance and inspection of tracks and trains
Train and educate staff on safety protocols and emergency procedures
IC 555 timer is a versatile timer IC used in various applications like oscillators, timers, and flip-flops.
IC 555 timer has three modes of operation: monostable, astable, and bistable.
In monostable mode, the output is high for a fixed duration when triggered.
In astable mode, the output oscillates between high and low states.
In bistable mode, the output remains in either high or low state until triggered.
IC 555 timer ca...
The internet is a global network of interconnected devices that communicate using standardized protocols.
The internet is based on the TCP/IP protocol suite.
Data is transmitted in packets across the network.
The network model consists of layers, including the physical, data link, network, transport, and application layers.
Routing protocols are used to direct packets to their destination.
Examples of internet applications ...
I am a software engineer with experience in developing web and mobile applications using various programming languages and frameworks.
Proficient in Java, Python, and JavaScript
Experience with React, Angular, and Node.js
Strong understanding of database management systems
Passionate about learning new technologies and solving complex problems
I applied via Campus Placement and was interviewed before Jun 2021. There were 4 interview rounds.
Amcat aptitude tests
Gd on online/offline shopping
I applied via LinkedIn and was interviewed in Jul 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in Mar 2021. There were 4 interview rounds.
Closure is a function that has access to variables in its outer scope, even after the outer function has returned.
A closure can be used to create private variables and methods in JavaScript.
Closures can be used to implement partial application and currying.
Event listeners and callbacks often use closures to maintain state between function calls.
Closures can be used to create memoized functions that cache their results
Callbacks hell is a situation where nested callbacks make code hard to read and maintain. Promises, observables, and async/await are solutions to this problem.
Callbacks hell occurs when there are too many nested callbacks in code.
Promises are a way to handle asynchronous operations in JavaScript.
Observables are similar to promises but can handle multiple values over time.
Async/await is a syntax for writing asynchronous
Higher order functions are functions that take other functions as arguments or return functions as their result.
Higher order functions allow for more flexible and reusable code.
They can be used for tasks such as filtering, mapping, and reducing arrays.
Examples include Array.prototype.map(), Array.prototype.filter(), and Array.prototype.reduce().
OOPs in JavaScript is a programming paradigm that uses objects to represent real-world entities. Functional programming is a paradigm that uses functions to perform tasks.
OOPs in JavaScript involves creating objects that have properties and methods.
Functional programming involves creating functions that take input and produce output without modifying the input.
OOPs focuses on encapsulation, inheritance, and polymorphis...
Event loop is a mechanism that allows JavaScript to perform non-blocking I/O operations.
Event loop is responsible for handling asynchronous callbacks in JavaScript.
Tasks in the queue can be either microtasks or macrotasks.
Microtasks are executed before macrotasks.
Examples of macrotasks include setTimeout, setInterval, and I/O operations.
Examples of microtasks include Promise callbacks and mutation observer callbacks.
Output of the code in JavaScript
Need to see the code to determine output
Output can vary based on input and logic
Can use console.log() to print output
Browsers use rendering engines to interpret HTML, CSS, and JavaScript to display web pages.
Browsers use rendering engines to interpret HTML, CSS, and JavaScript.
The rendering engine parses the HTML and creates a DOM tree.
The rendering engine then applies CSS rules to the DOM tree to create a render tree.
The render tree is then laid out to determine the position of each element on the page.
Finally, the rendering engine ...
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