DXC Technology Frontend Developer Intern Interview Questions and Answers

Interfaces define a contract for classes to implement certain methods and properties.

• Interfaces allow for polymorphism and loose coupling.

• Classes can implement multiple interfaces.

• Interfaces cannot be instantiated on their own.

• Interfaces can have default method implementations.

• Interfaces can be used to enforce design patterns like the adapter pattern.

C# concepts including abstraction, interface, abstract method, abstract class, polymorphism, encapsulation, inheritance, and serialization.

• Abstraction: hiding implementation details

• Interface: defining a contract for behavior

• Abstract method: method without implementation

• Abstract class: class with one or more abstract methods

• Polymorphism: ability of objects to take on multiple forms

• Encapsulation: bundling data and behavi...read more

Program to print a pattern and implement bubble sort on an array of strings.

• For pattern printing, use nested loops to print the desired pattern.

• For bubble sort, compare adjacent elements and swap if necessary.

• Use a loop to iterate through the array until no more swaps are needed.

Fortran is the oldest programming language.

• Fortran was developed in the 1950s by IBM.

• It stands for Formula Translation.

• It was primarily used for scientific and engineering calculations.

• Other old programming languages include COBOL and Lisp.