MasterCard Software Development Manager Interview Questions and Answers

Q1. Deep dive into java concepts. Max diameter of a tree in java.
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Q1. Lld of loan and borrower design. Design dbs schema. About connection pool, db isolation.
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Q1. Hiring manager round, more about previous experience and some hypothetical questions.
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Q1. What are the best and worst solutions for the coding problem "Longest Substring Without Repeating Characters," including a detailed explanation of each solution along with their time and space complexity?
Ans. 
The Longest Substring Without Repeating Characters problem involves finding the length of the longest substring without any repeating characters.
• Best solution: Sliding Window approach with HashSet to track unique characters. Time complexity O(n), space complexity O(min(n, m)) where n is the length of the string and m is the size of the character set.

• Worst solution: Brute force approach checking all substrings for uniqu...read more
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Q1. Questions regarding Redis and cache eviction policies, and how would you implement a low-level design for the Least Recently Used (LRU) cache algorithm?
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A test that covers all fundamental topics, including networking, object-oriented programming (OOP), and data structures and algorithms (DSA).

Q1. Write code for quick sort
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Q2. Puzzle
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Q1. Explain the react lifecycle functions and how they work
Ans. 
React lifecycle functions are methods that are automatically called at specific points in a component's life cycle.
• Mounting: constructor, render, componentDidMount

• Updating: render, componentDidUpdate

• Unmounting: componentWillUnmount
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Q2. Css box model, difference between padding and margin
Ans. 
Padding is the space inside the border of an element, while margin is the space outside the border.
• Padding is used to create space between the content and the border of an element.

• Margin is used to create space between the border of an element and other elements.

• Padding affects the size of the content area, while margin affects the positioning of the element.

• Example: padding: 10px will create 10 pixels of space inside ...read more
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Q1. What are your salary expectations in CTC and variables?
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Q2. Will you relocate to the location required?
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Java coding questions, basic Java questions.

Q1. Java basics questions.
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Q2. Live coding.
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Q1. Discussion on previous experience and projects.
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Q2. System design question
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Q1. Questions on SQL, Java advanced, personal projects, Java frameworks, UI based questions, Agile methodologies.
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Q2. Interview discussion with the whole team.
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Q1. Benefits discussion.
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Q2. Salary discussion.
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Basic Oops MCQ and aptitude and one da

Q1. Basic dsa and project
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Q1. DSA and project related
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1 hour, the coding test was based on a project given to us

Q1. Detailed questionnaire on React
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Q2. Problem solving based on array manipulations
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Q1. They asked Java coding question
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