Deltax Interview Questions and Answers

This round is all about technical mcqs from theory subjects and programming. No aptitude, reasoning questions.

I have to solve 5 questions in 2 hrs.

Q1. Ask to solve a DP question given in the coding test.
Ans. 
Dynamic Programming (DP) is a method for solving complex problems by breaking them down into simpler subproblems.
• DP is used in optimization problems, like the Knapsack problem.

• It involves storing results of subproblems to avoid redundant calculations.

• Example: Fibonacci sequence can be computed efficiently using DP.

• DP can be implemented using either a top-down (memoization) or bottom-up (tabulation) approach.
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Q2. Ask to solve another medium level leetcode question.
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Q3. Ask about projects and Internship experienced.
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Q4. Ask OOPS questions.
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Q5. Ask me to design Zomato's dish rating feature.
Ans. 
Design a dish rating feature for Zomato to enhance user engagement and improve restaurant visibility.
• User Interface: Simple star rating system (1-5 stars) for quick feedback.

• Detailed Reviews: Allow users to write reviews with pros and cons for each dish.

• Photo Upload: Enable users to upload photos of the dishes they rated.

• Filter Options: Users can filter dishes by ratings, cuisine, or popularity.

• Incentives: Reward users...read more
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Had 50 qsns in 45 min

Had 5 qsns to execute topics like tress and graphs

Q1. Sql queries and how to extract the data
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Q2. Oops concepts and their execution
Ans. 
Oops concepts are fundamental principles of object-oriented programming that help in organizing and designing code efficiently.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability of objects to take on multiple forms or have multiple behaviors.

• Abstraction: Hiding the complex ...read more
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Basics questions were asked,most of the questions were from previous year

Q1. Arithma and the operator
Ans. 
Arithma is a fictional company and the operator is a key component in their product.
• The operator is a crucial element in the functionality of Arithma's product.

• It is likely a symbol or function used for calculations.

• Examples of operators could include + (addition), - (subtraction), * (multiplication), / (division).
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Q2. JSON sanitizer:remove and sort
Ans. 
A JSON sanitizer removes unwanted data and sorts the remaining keys for consistency.
• Sanitization involves removing sensitive or unnecessary fields, e.g., removing 'password' from user data.

• Sorting can be done alphabetically by key, e.g., converting {'b': 2, 'a': 1} to {'a': 1, 'b': 2}.

• Use libraries like 'json-sanitizer' in JavaScript for effective sanitization.

• Ensure to validate data types after sanitization, e.g., ens...read more
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Q3. Get me the query parameter
Ans. 
The query parameter is a part of a URL that contains data to be passed to a web server.
• Query parameters are added to the end of a URL after a '?'

• They are key-value pairs separated by '&'

• Example: www.example.com/search?q=product&category=electronics
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MCQ on computer fundamentals

5 DSA questions medium , hard lvl

Q1. About myself and my project overview
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Q2. Oops , Abstraction in detail and mysql and nosql diff
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Q3. DSA questions on Array , Graph and DP
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90 Question with 60 minutes

Speak about given topic

Q1. How can AI and machine learning be leveraged in digital marketing strategies?
Ans. 
AI and machine learning enhance digital marketing by personalizing experiences, optimizing campaigns, and analyzing data efficiently.
• Personalization: AI algorithms analyze user behavior to deliver tailored content and product recommendations, improving engagement.

• Predictive Analytics: Machine learning models forecast customer behavior, helping marketers anticipate trends and adjust strategies accordingly.

• Chatbots: AI-p...read more
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Q2. What are the most effective ways to measure the ROI of social media marketing campaigns?
Ans. 
Measuring ROI in social media involves tracking conversions, engagement, and overall impact on business goals.
• Track conversions: Use UTM parameters to measure traffic and conversions from social media posts.

• Engagement metrics: Analyze likes, shares, comments, and overall engagement to assess brand awareness.

• Customer acquisition cost: Calculate the cost of acquiring customers through social media campaigns versus revenu...read more
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Good nice easy to medium questions

Q1. What is your project
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Q2. Give some real life examples of oops
Ans. 
Real life examples of OOPs include cars, animals, and banking systems.
• Cars: Objects like make, model, and color with behaviors like driving and honking.

• Animals: Objects like species, name, and age with behaviors like eating and sleeping.

• Banking Systems: Objects like account, balance, and transaction with behaviors like deposit and withdraw.
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Q1. Questions on computer networks
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Q2. Questions on SQL queries and DSA
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