Oracle Senior Software Developer Interview Questions and Answers

CLR is the runtime environment for .NET applications that manages memory, security, and execution of code.

• CLR stands for Common Language Runtime

• It compiles code into an intermediate language (IL) that can run on any platform with CLR installed

• CLR manages memory through garbage collection

• It provides security through code access security (CAS)

• CLR also includes just-in-time (JIT) compilation for improved performance

IIS is a web server that handles HTTP requests and responses.

• IIS stands for Internet Information Services.

• It is a component of Windows Server.

• It listens for incoming HTTP requests on a specified port.

• It processes the request and sends back a response.

• It can host multiple websites on a single server.

• It supports various protocols like HTTP, HTTPS, FTP, SMTP, etc.

• It can be configured using the IIS Manager tool.

• It can also be managed programmatically using the IIS API.

Function overloading is having multiple functions with the same name but different parameters. Function overriding is having a function in a subclass with the same name and parameters as a function in the superclass.

• Function overloading is used to provide different ways to call a function with different parameters.

• Function overriding is used to provide a specific implementation of a function in a subclass that is different from the implementation in the superclass.

• Function ov...read more

SOLID is a set of principles for object-oriented programming that aims to make software more maintainable, scalable, and robust.

• S - Single Responsibility Principle: A class should have only one reason to change.

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

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

• I - Interface Segregation Principle: Clients should not be forced to depend on...read more

Design pattern is a reusable solution to a commonly occurring problem in software design.

• Design patterns provide a common language for developers to communicate solutions.

• They help in creating flexible, maintainable, and scalable software.

• Examples include Singleton, Factory, Observer, and MVC pattern.

• Design patterns are categorized into three types: Creational, Structural, and Behavioral.

Program to check if a given string is a palindrome

• Convert the string to lowercase to ignore case sensitivity

• Remove all non-alphanumeric characters from the string

• Reverse the string and compare it with the original string

• If they are the same, then the string is a palindrome

Ref and out are both used to pass arguments by reference in C#. Ref is bidirectional while out is unidirectional.

• Ref and out are used to pass arguments by reference instead of by value

• Ref is used for both input and output parameters while out is only used for output parameters

• Ref requires the variable to be initialized before passing while out does not

• Example: void MyMethod(ref int x) { x = x + 1; }

• Example: void MyMethod(out int x) { x = 1; }