Advisor360° Interview Questions and Answers

Q1. Create basic react app with dummy data fetched from JSON API
Ans. 
Create a basic React app with dummy data fetched from a JSON API.
• Set up a new React project using create-react-app

• Create a component to fetch data from a JSON API using fetch or axios

• Display the fetched data in the component
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Q2. Array methods and Flatten array
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Q3. Event loop
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Q4. HTML and Javascript basics
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Q1. Roles and responsibilities
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Q2. Problem based questions
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Q3. Code test & discussions over best practices, best solutions, time and space complexities
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Q1. What data structure is used to implement a priority queue?
Ans. 
Binary heap is used to implement a priority queue.
• Binary heap is a complete binary tree where each node has a value greater than or equal to its children.

• It can be implemented using arrays, where the parent of node at index i is at index (i-1)/2.

• Insertion and deletion operations have time complexity of O(log n) in a binary heap.
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Q2. How many trees will a binary tree have?
Ans. 
A binary tree can have any number of nodes, but the maximum number of trees with n nodes is 2^n.
• A binary tree can have 0 nodes, 1 node, 2 nodes, or any number of nodes.

• The maximum number of binary trees with n nodes is 2^n.

• For example, a binary tree with 3 nodes can have up to 8 different structures.
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Q1. SQL Query to return the second highest marks in a student database
Ans. 
Use a SQL query to find the second highest marks in a student database.
• Use the ORDER BY clause to sort the marks in descending order

• Use the LIMIT clause to limit the result to the second row
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Q2. Program to check if two strings are anagrams
Ans. 
Program to check if two strings are anagrams
• Create a function that takes in two strings as input

• Remove any spaces and convert both strings to lowercase for consistency

• Sort the characters in both strings and compare if they are equal to determine if they are anagrams

• Example: 'listen' and 'silent' are anagrams
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A link was provided for the 15-minute online aptitude test.

90 minutes coding round. There were three problems. One for JavaScript and two for ReactJS

Q1. Mostly ReactJS questions were asked and a few Javascript questions were asked.
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Q1. Again a few react based questions then it was mostly discussion on the past experiences.
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Q1. A general discussion about the notice period, compensation, and information about the company's culture was provided.
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Q1. Introducing your self and project
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Q2. Severity and priority
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Q3. Smoke and sanity testing
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Q4. Scenario base question if find bug before release
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Q1. Simple travel question
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Q2. Simple reply and Selection
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Q3. Good job at any cost
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Q4. I want top most Salary
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Q5. I need good appreciation
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Normal basic question train and few Logic

Q1. What is Continue?
Ans. 
Continue is a keyword in programming that is used to skip the current iteration of a loop and continue with the next iteration.
• Continue is used in loops like for, while, and do-while to skip the current iteration and move to the next one.

• It is often used to skip certain elements in an array or to avoid executing specific code under certain conditions.

• Example: for(int i=0; i<5; i++) { if(i==2) { continue; } System.out.p
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Q2. Break, if else, while
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Q1. How Performance of application can be improved
Ans. 
Performance of an application can be improved by optimizing code, using efficient algorithms, caching data, and scaling resources.
• Optimize code by reducing unnecessary loops, improving database queries, and minimizing memory usage

• Use efficient algorithms like binary search instead of linear search for large datasets

• Implement caching mechanisms to store frequently accessed data and reduce database calls

• Scale resources b...read more
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