Yardi Systems Application Support Engineer 2 Interview Questions and Answers for Experienced

Q1. Reconciliation in react
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Reconciliation in React is the process of updating the virtual DOM to match the actual DOM.
• Reconciliation is the process of comparing the virtual DOM with the actual DOM and making necessary updates.

• React uses a diffing algorithm to efficiently update the DOM without re-rendering the entire component tree.

• Key prop is important for React to efficiently reconcile elements and maintain component state.

• Reconciliation can b...read more
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Q2. Performance in React
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Performance optimization in React is crucial for creating fast and efficient web applications.
• Use React.memo and PureComponent to optimize rendering performance by preventing unnecessary re-renders.

• Avoid unnecessary re-renders by using shouldComponentUpdate or React.memo with custom comparison functions.

• Use code splitting and lazy loading to reduce initial load time and improve performance.

• Optimize component rendering ...read more
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Q3. React is faster
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Q4. React DOm-related questions
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Q5. Hooks in React how to use that.
Ans. 
Hooks in React are functions that let you use state and other React features in functional components.
• Hooks were introduced in React 16.8 to allow state and lifecycle features in functional components.

• useState() hook is used to add state to functional components.

• useEffect() hook is used to perform side effects in functional components.

• Custom hooks can be created to reuse stateful logic across components.
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Q1. Core concepts of .Net Core, Entity Framenwork and OOPS
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Q1. 1) OOP Concepts
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Q2. Difference between Abstract class and interface
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Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any of these.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to provide a common base for multiple classes, while interfaces are used to define a contract for ...read more
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Q3. Mysql Concepts and Mysql queries
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Q4. Logical questions on Array and String Functions in PHP
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Q5. File handling functions such as fread, fopen, fclose etc and logical string function questions on file data.
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Q1. All Scenario based questions
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Q2. OOP Concepts in deep
Ans. 
OOP Concepts refer to the principles of Object-Oriented Programming, including encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

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

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways...read more
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Q3. Software design pattern related questions
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Q4. Small Logical programs
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Q5. Database queries in deep
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Database queries involve retrieving, updating, and manipulating data stored in a database.
• Database queries are used to retrieve specific data from a database based on certain criteria.

• Queries can also be used to update existing data or insert new data into the database.

• SQL (Structured Query Language) is commonly used to write database queries.

• Examples of database queries include SELECT, INSERT, UPDATE, and DELETE state
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A company designed the test basically to understand the nature of the interviewee. Simple test.

Q1. OOP Questions like inheritance, polymorphism, etc.
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