LeadSquared Senior Product Designer Interview Questions and Answers

Q1. Basic Oracle Architecture, RAC Setup, Golden Gate Troubleshooting, Data Guard recover, RMAN restoration
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Q1. Advantage and disadvantage of framework.
Ans. 
Frameworks provide structure and pre-built components for software development, but can also limit flexibility and require learning curve.
• Advantage: Provides structure and pre-built components for faster development

• Advantage: Can improve code quality and maintainability

• Disadvantage: Can limit flexibility and customization

• Disadvantage: Requires learning curve and potential dependency issues

• Example: ReactJS provides a fr...read more
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Q1. What is Oops? Advantage and disadvantage
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Oops stands for Object-Oriented Programming. It is a programming paradigm that uses objects to represent real-world entities.
• Advantages: code reusability, modularity, encapsulation, inheritance, polymorphism

• Disadvantages: complexity, steep learning curve, performance overhead

• Example: creating a class 'Car' with properties like 'make', 'model', and 'year', and methods like 'start_engine' and 'stop_engine'
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Q1. Oops concepts, mysql query
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Q2. Find 2highest salary mysql query, abstract and interfaces
Ans. 
MySQL query to find 2 highest salaries and explanation of abstract and interfaces
• Use ORDER BY and LIMIT to get the top 2 salaries

• Abstract classes cannot be instantiated and can have both abstract and non-abstract methods

• Interfaces define a set of methods that a class must implement

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 2

• Example: abstract class Animal { abstract void makeSound(); }

• Example: inte
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Q1. Mysql questions, sdlc method
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Q1. Salary discussion and discussion about job roles
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Q1. Remove duplicates from list
Ans. 
Remove duplicates from list of strings
• Create a Set to store unique strings

• Iterate through the array and add each string to the Set

• Convert the Set back to an array to get the list of unique strings
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Q2. Find Second largest in a table
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Iterate through the table to find the second largest value.
• Iterate through the table and keep track of the largest and second largest values.

• Compare each value with the current largest and second largest values.

• Update the second largest value if a new value is found that is greater than the current second largest value.
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Q3. Sort in descending order
Ans. 
Sort array of strings in descending order
• Use a sorting algorithm like quicksort or mergesort

• Specify the sorting order as descending

• Ensure the sorting algorithm is stable to maintain order of equal elements
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Q1. Optimisation techniques
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Optimisation techniques for software engineering
• Use efficient algorithms and data structures

• Minimize I/O operations and network calls

• Optimize database queries

• Use caching and memoization

• Parallelize computations

• Profile and analyze code for bottlenecks

• Eliminate unnecessary code and dependencies
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Q2. Questions related Oops concept
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Q1. Question related Unity basics.
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Q2. Explain Design patterns in c#
Ans. 
Design patterns are reusable solutions to common software problems.
• Design patterns provide a common language for developers to communicate solutions.

• They help improve code quality, maintainability, and scalability.

• Examples include Singleton, Factory, Observer, and Decorator patterns.
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Prime number programs

Q1. What is ooops, what is polymorphism , abstract class
Ans. 
OOPs is Object-Oriented Programming, polymorphism allows objects to be treated as instances of their parent class, abstract class cannot be instantiated.
• OOPs is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• Polymorphism allows objects to be treated as instances of their parent class, enabling different classes to be treated as ins...read more
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