Dynalog India Interview Questions and Answers

Angular pipes are used in Angular applications to transform data before displaying it in the view.

• Angular pipes are used to format data in the template.

• They can be used to transform data such as currency, dates, and text.

• Pipes can be chained together for more complex transformations.

• Custom pipes can also be created for specific formatting needs.

Routing is the process of selecting a path for network traffic to travel from one point to another.

• Routing involves determining the best path for data packets to travel through a network.

• Routers use routing tables to make decisions on how to forward packets.

• Routing protocols like OSPF and BGP help routers communicate and update routing information.

• Examples of routing include IP routing in the internet and routing within a local network.

Auth guard is a feature in software development that restricts access to certain resources based on user authentication.

• Auth guard is commonly used in web applications to control access to certain pages or features.

• It checks if a user is authenticated before allowing them to access a specific resource.

• Examples include restricting access to admin pages or requiring login to view certain content.

An interceptor is a middleware component that intercepts incoming requests and outgoing responses in a web application.

• Interceptors can be used for logging, authentication, authorization, error handling, and more

• In Angular, interceptors can be used to modify HTTP requests before they are sent to the server or responses before they are returned to the calling code

Oops concepts refer to Object-Oriented Programming principles like Inheritance, Polymorphism, Encapsulation, and Abstraction.

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

• Polymorphism: Ability to present the same interface for different data types.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.