DH Healthcare Software Services India Private Limited (Dedalus) Associate Software Engineer Interview Questions and Answers

Q1. Basic introduction and soo on.
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Aptitude test questions

Q1. React hooks, Explain using code
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React hooks are functions that let you use state and other React features without writing a class.
• Hooks are functions that let you use state and other React features in functional components

• useState() is a hook that allows you to add state to functional components

• useEffect() is a hook that allows you to perform side effects in functional components

• useContext() is a hook that allows you to use the context API in functio
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Q2. Factory Patterns?
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Q3. Liskov Substitution Principle
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Liskov Substitution Principle states that objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.
• Subtypes must be substitutable for their base types.

• Derived classes must be able to replace their base classes without affecting the program's behavior.

• Violating this principle can lead to unexpected behavior and errors in the code.

• Example: If a program expec...read more
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Q4. Oops Concept and give examples
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Oops concept is a programming paradigm that focuses on objects and classes.
• Oops stands for Object-Oriented Programming

• Key concepts include inheritance, encapsulation, polymorphism, and abstraction

• Examples: Class Car with properties like make, model, and methods like start(), stop()

• Example: Inheritance - Class SUV extends Car and adds property numSeats
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Q5. JQuery - Ajax mechanisms
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Q6. Docker and Kubernetes - Azure concepts
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Q1. Java 8, 11 features with practical questions and coding.
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Q2. Springboot, spring security, spring cloud, actuators
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Q1. Data structures and algorithms
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Q2. Java 8, 11 features with coding assignment
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Java 8 and 11 introduced several new features and improvements to the language.
• Java 8 introduced lambda expressions, functional interfaces, streams, and default methods.

• Java 11 introduced local variable syntax for lambda parameters, HTTP client API, and new string methods.

• Example of Java 8 lambda expression: (x, y) -> x + y

• Example of Java 11 HTTP client API: HttpClient client = HttpClient.newHttpClient();
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Q3. Springboot related questions and coding
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Q1. Oops,project related,basic program
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Q1. Oops,multithreading,threads, tasks, project related,basic program
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Q1. Package details , relocation, benefits
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Q1. Tech Basic Quesions and Related to stack mostly on .net Sql and Angular
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C programming

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Q1. SOLID principles with real time examples
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SOLID principles are a set of guidelines for writing maintainable and scalable code.
• Single Responsibility Principle: A class should have only one reason to change.

• Open/Closed Principle: A class should be open for extension but closed for modification.

• Liskov Substitution Principle: Subtypes should be substitutable for their base types.

• Interface Segregation Principle: Clients should not be forced to depend on interfaces ...read more
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Q1. Explain about pagination
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Pagination is the process of dividing content into separate pages to improve user experience and optimize performance.
• Pagination is commonly used in websites to display a large amount of data in manageable chunks.

• It allows users to navigate through different pages of content, typically with options like 'Next' and 'Previous'.

• Pagination can also include features like page numbers, page size selection, and total item cou...read more
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Q1. General Managerial questions
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