ELB Learning Web Developer Interview Questions and Answers

Round duration - 20 Minutes
Round difficulty - Easy

very easy questions related to web development. 1 coding question

Q1. 
Clone a Linked List with Random Pointers
Given a linked list where each node has two pointers: the first points to the next node in the list, and the second is a random pointer that can point to any node ...read more
Ans. 
Create a deep copy of a linked list with random pointers without using references of original nodes.
• Iterate through the original linked list and create a new node for each node in the list.

• Store the mapping of original nodes to new nodes in a hashmap to handle random pointers.

• Update the random pointers of new nodes based on the mapping stored in the hashmap.

• Return the head of the copied linked list.
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Round duration - 150 Minutes
Round difficulty - Medium

Q1. 
Loot Houses Problem Statement
A thief is planning to steal from several houses along a street. Each house has a certain amount of money stashed. However, the thief cannot loot two adjacent houses. Determi...read more
Ans. 
Determine the maximum amount of money a thief can steal from houses without looting two consecutive houses.
• Create an array 'dp' to store the maximum money that can be stolen from each house without looting two consecutive houses.

• Iterate through the houses and update 'dp' based on the maximum money that can be stolen from the current house.

• Return the maximum value in 'dp' as the answer.
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Q2. Can you design a website similar to Amazon?
Ans. 
Yes, I can design a website similar to Amazon by focusing on user-friendly interface, robust search functionality, secure payment options, and personalized recommendations.
• Focus on user-friendly interface with easy navigation

• Implement robust search functionality with filters and sorting options

• Provide secure payment options with encryption and fraud protection

• Include personalized recommendations based on user behavior ...read more
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Round duration - 10 Minutes
Round difficulty - Easy

Q1. Tell me about your self
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Q1. Tell me about yourself
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Q2. Why do you wanna join Talentedge?
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Q3. What you know about Edtech Industry?
Ans. 
Edtech industry refers to the use of technology in education to enhance learning and teaching experience.
• Edtech includes online learning platforms, educational apps, and digital tools for teachers.

• The industry has seen significant growth due to the COVID-19 pandemic and the shift to remote learning.

• Examples of edtech companies include Coursera, Khan Academy, and Duolingo.

• Edtech has the potential to improve access to ed...read more
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Q1. Tell me about yourself.
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Q1. What is Ed-tech?
Ans. 
Ed-tech refers to the use of technology to facilitate learning and education.
• Ed-tech includes online learning platforms, educational apps, and digital tools for teaching and learning.

• It aims to enhance the educational experience, make learning more accessible, and improve student outcomes.

• Examples of ed-tech companies include Khan Academy, Coursera, and Duolingo.
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Q2. What is digital marketing?
Ans. 
Digital marketing is the use of online channels to promote products or services to a targeted audience.
• Involves using social media, email, websites, and search engines for marketing purposes

• Includes strategies such as SEO, SEM, content marketing, and influencer marketing

• Allows for targeted advertising based on demographics, interests, and behavior

• Provides measurable results through analytics and tracking tools
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Q3. What are the responsibilities of learning consultant
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Q4. Sales round - a book
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Q1. DSA - related to arrays hard
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Q2. Stack medium level
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Q1. Find duplicates in an array
Ans. 
Use a hash set to find duplicates in an array of strings.
• Create a hash set to store unique elements.

• Iterate through the array and check if the element is already in the hash set.

• If it is, then it is a duplicate. If not, add it to the hash set.
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Q2. Find single duplicate element in an array where contents of the array are length of array - 1
Ans. 
Find the single duplicate element in an array of strings with length n-1.
• Iterate through the array and use a HashSet to keep track of elements seen so far.

• If an element is already in the HashSet, that is the duplicate element.

• Return the duplicate element once found.
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Create a student support system

Q1. Design an order and payments system for an EdTech company
Ans. 
Design an order and payments system for an EdTech company
• Allow users to browse and select courses

• Implement a shopping cart for users to add courses

• Integrate payment gateways for secure transactions

• Provide order confirmation and receipt to users

• Allow users to track their order status
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Q1. Tell me about your self , internship or exp. Why sales?
Ans. 
I have a background in marketing and sales through internships and previous work experience. I am passionate about sales because of the opportunity to build relationships and drive revenue.
• Interned at XYZ company where I learned about sales strategies and techniques

• Worked as a sales associate at ABC store, exceeding sales targets consistently

• Enjoy the challenge of meeting customer needs and closing deals

• Passionate abou...read more
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A sales pitch round in which a scenario was provided.

Q1. Final interview questions from cv.
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Q1. About Myself in details
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Q2. Past internships and work experiences
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Q1. Primary keys, Unique key
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Q2. Usage advantages and disadvantages of Indexing
Ans. 
Indexing improves data retrieval speed but can increase storage and maintenance costs.
• Faster query performance: Indexes allow for quicker data retrieval. For example, searching for a user by ID is faster with an index.

• Reduced I/O operations: Indexes minimize the number of disk reads required to find data, enhancing performance.

• Increased storage requirements: Indexes consume additional disk space, which can be significa...read more
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SQL- 1 departments with no users
2 dept_id and their respective no. of users

DSA1: Most frequent no. in an array
DSA2: Zero Sum subarray exists