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ExamRoom.AI Senior Backend Developer Interview Questions and Answers
ExamRoom.AI Senior Backend Developer Interview Experiences
1 interview found
Prabhat Sinha
Selected
I appeared for an interview before Jul 2024, where I was asked the following questions.
- Q1. Async await, .net core Middleware, Microservice patterns
- Q2. How to increase the Performance of SQl Query, Acid Functionality
- Q3. Solid principles, Project architecture
Interview Preparation Tips
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Interview questions from similar companies
Anonymous
I appeared for an interview in Nov 2020.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
- Q1.
Path Queries Problem Statement
Consider a weighted, undirected graph with 'V' vertices numbered from 1 to 'V' and 'E' bidirectional edges. You are tasked with handling 'Q' queries. For each query, you are...
- Ans.
Implement a function to find the shortest distance between two vertices in a weighted, undirected graph.
Use Dijkstra's algorithm to find the shortest path between the given vertices.
Create a graph data structure to represent the weighted, undirected graph.
Handle cases where no path exists between the given vertices by returning -1.
Optimize the algorithm to handle multiple queries efficiently.
Consider edge cases such as...
- Q2.
Merge Sort Algorithm Problem Statement
Your task is to sort a sequence of numbers stored in the array ‘ARR’ in non-descending order using the Merge Sort algorithm.
Explanation:
Merge Sort is a divide-an...
- Ans.
Implement Merge Sort algorithm to sort a sequence of numbers in non-descending order.
Divide the input array into two halves recursively
Sort the two halves separately
Merge the sorted halves to produce a fully sorted array
Time complexity of Merge Sort is O(n log n)
Example: Input - [5, 2, 9, 1, 5], Output - [1, 2, 5, 5, 9]
- Q3.
Rat in a Maze: All Paths Problem
You are provided with an
N * Nmaze where a rat is positioned at starting cellMAZE[0][0]. The goal is to determine and print all possible paths that the rat can take to r... - Ans.
Given an N * N maze with binary values, find and print all possible paths for a rat to reach the destination cell.
Use backtracking to explore all possible paths from the starting cell to the destination cell.
At each cell, check if it is a valid move (within bounds and not blocked), then recursively explore all four directions.
Keep track of the path taken so far and mark the cells accordingly.
Once the destination cell i...
Interview Preparation Tips
Tip 1 : Practice Atleast 250 Questions
Tip 2 : Do atleast 2 projects
Tip 1 : Have some projects on resume.
Tip 2 : Do not put false things on resume.
Skills evaluated in this interview
Basic coding and MySQL queries. Like Types of join, having and where difference etc.
(1 Question)
- Q1. Salary Discussion.
I applied via Campus Placement and was interviewed in Aug 2022. There were 4 interview rounds.
2 coding questions with aptitude question(logical aptitude and quantitative aptitude)
This was a Machine Coding. We need to design a system and then they will check our design by running test cases. It was 2.5 hrs long.
(2 Questions)
- Q1. Basic questions on computer core subjects(Deadlock, Networking, Tcp connection, process scheduling etc, DNS Lookup etc)
- Q2. Questions on React, Node and the libraries which I used in my project(My project was a full stack project)
Interview Preparation Tips
- Computer Networking
- Operating Systems
- Database Management
- React.Js
- Data Structures
(2 Questions)
- Q1. What is OOPS concepts.
- Ans.
OOPS concepts refer to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex implementation detail...
- Q2. What is PDO and uses in PHP.
- Ans.
PDO stands for PHP Data Objects, a database access layer providing a uniform method of access to multiple databases.
PDO is a PHP extension that provides a data-access abstraction layer.
It supports multiple database systems like MySQL, PostgreSQL, SQLite, etc.
PDO helps prevent SQL injection attacks by using prepared statements.
It allows for error handling and supports transactions.
Example: $pdo = new PDO('mysql:host=loc...
Skills evaluated in this interview
Selected
I applied via Coding ninjas and was interviewed before Nov 2023. There were 3 interview rounds.
Pizza restaurant website
(2 Questions)
- Q1. Javascript related questions
- Q2. React fundamentals and redux and saga function
(1 Question)
- Q1. Round with CEO for culture fit
Rishi A
I appeared for an interview in Oct 2022.
Coding round based on experience and profile
(2 Questions)
- Q1. About the experience and tech
- Q2. In depth knowledge will be tested
Interview Preparation Tips
Yashwant Panchal
Question on Linked list. array and string manipulation.
(2 Questions)
- Q1. No any interview
- Q2. It's aptitude test only
Interview Preparation Tips
Selected
I appeared for an interview in Mar 2024.
(5 Questions)
- Q1. Sales type questions
- Q2. Tell me about yourselves
- Q3. Marketing types
- Q4. Your qualifications
- Ans.
I hold a degree in Computer Science and have extensive experience in Salesforce development and customization.
Bachelor's degree in Computer Science, providing a solid foundation in programming and software development.
Certified Salesforce Developer, demonstrating my expertise in Salesforce technologies and best practices.
Over 3 years of hands-on experience in Apex, Visualforce, and Lightning components, successfully de...
- Q5. Your skills and performance
- Ans.
I possess strong Salesforce development skills, focusing on Apex, Visualforce, and Lightning components to deliver efficient solutions.
Proficient in Apex programming, having developed custom business logic for various applications.
Experienced in creating responsive Lightning components, enhancing user experience and performance.
Skilled in integrating Salesforce with external systems using REST and SOAP APIs, improving ...
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