Quest Global Software Developer Interview Questions, Process, and Tips

Q1. Difference between linked list and array list
Ans. 
Linked list is a data structure where elements are stored in nodes with pointers to the next node. Array list is a dynamic array that can grow or shrink in size.
• Linked list allows for efficient insertion and deletion of elements anywhere in the list.

• Array list provides fast access to elements using index, but slower insertion and deletion compared to linked list.

• Example: Linked list - 1 -> 2 -> 3 -> 4 -> 5, Array list
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Q2. Difference between @controller and @ Rest controller
Ans. 
The @Controller annotation is used for traditional MVC controllers, while @RestController is used for RESTful web services.
• The @Controller annotation is used to define a class as a Spring MVC controller, which can handle HTTP requests and return a view.

• The @RestController annotation is used to define a class as a controller for RESTful web services, which can handle HTTP requests and return data in JSON or XML format.

• T...read more
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Asked basics of Javascript and ReactJS and data flow

Q1. What is react and concept of Virtual dom and real dom
Ans. 
React is a JavaScript library for building user interfaces. Virtual DOM is a lightweight copy of the Real DOM, used for efficient updates.
• React is a popular JavaScript library for building user interfaces.

• Virtual DOM is a lightweight copy of the Real DOM, used for efficient updates.

• When changes are made in React, the Virtual DOM is updated first, then compared to the Real DOM to minimize actual DOM manipulation.
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Q1. Define SOLID principles
Ans. 
SOLID principles are a set of five design principles for writing maintainable and scalable code.
• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Classes should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correct...read more
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Q2. How is data binding achieved in WPF. Show with an example
Ans. 
Data binding in WPF allows synchronization of data between UI elements and data sources
• Data binding in WPF can be achieved using the Binding markup extension

• Properties of UI elements can be bound to properties of data objects

• Example: binds the Text property of TextBlock to the Name property of data object
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Q1. Java core and spring
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Q1. General discussion
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