Deepija Telecom Software Engineer Interview Questions and Answers

Q1. Describe Life cycle in react
Ans. 
React has three main phases in its lifecycle: mounting, updating, and unmounting.
• Mounting: when a component is created and inserted into the DOM

• Updating: when a component is updated due to changes in props or state

• Unmounting: when a component is removed from the DOM

• Lifecycle methods can be used to perform actions at each phase, such as componentDidMount() or componentWillUnmount()

• React also has error handling methods,
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Q2. Explain strict mode in javascript and it's use
Ans. 
Strict mode is a way to write secure and optimized JavaScript code.
• Enables catching of silent errors

• Disallows duplicate property names or parameters

• Prevents use of undeclared variables

• Makes `eval()` safer to use

• Throws errors on invalid usage of `this` keyword
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CURD operations along with implementation of a mock UI

General aptitude test with math and logic related questions. there were also coding questions which were given more weightage than the other questions.

Q1. Standard linked list questions like finding the middle of a linked list, checking if the linked list is a loop etc
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Q2. Max heap related questions.
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Q1. This interview was mostly math related questions. for eg: prove if a number is irrational.
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Q1. Basic Question on Tree Traversals
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Q2. Questions of Linked List
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Logical Reasoning, Questions on distances, Questions on directions

1- Difference between array list and linked list.
2- Reverse the linked list

1-Difference between Arraylist and Linked list.
2-Check if strings are anagram.

Hackerrank algorithms and ds test

Q1. Technical on java and aws
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Q1. Basic technical question oops concept
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