Flexagon Technosolutions Interview Questions and Answers

O-Auth is an open standard for authorization. Our project uses token-based authentication for security.

• O-Auth is used to allow users to grant access to their resources without sharing their credentials.

• It uses tokens for authentication instead of passwords.

• Our project uses token-based authentication for security purposes.

• Token-based authentication involves generating a unique token for each user that is used to authenticate their requests.

Dependency injection is implemented by creating interfaces for dependencies and injecting them into the class constructor.

• Identify dependencies and create interfaces for them

• Create a class constructor that accepts the interfaces as parameters

• Use a dependency injection framework like Spring or Guice

• Avoid using static methods or singletons to access dependencies

Realtime state management techniques include WebSockets, Server-Sent Events, and GraphQL Subscriptions.

• WebSockets allow bidirectional communication between client and server, enabling real-time updates.

• Server-Sent Events allow the server to push updates to the client without the client having to request them.

• GraphQL Subscriptions allow clients to subscribe to specific data and receive updates when that data changes.

• Other techniques include polling, long polling, and Comet.

Realtime exception handling requires quick identification, logging, and resolution of errors.

• Use try-catch blocks to handle exceptions in real-time

• Log exceptions with detailed information to aid in debugging

• Implement automated error reporting to quickly identify and resolve issues

• Use monitoring tools to detect and alert on errors in real-time

• Ensure error messages are clear and actionable for developers and end-users

Tuple is an ordered set of values of different types in C#.

• Tuples are immutable and can be used to return multiple values from a method.

• Tuple can be created using the Tuple class or by using the tuple syntax.

• Example: Tuple tuple = new Tuple(1, "hello");

• Example: var tuple = (1, "hello");

• Tuple elements can be accessed using Item1, Item2, etc. properties or by deconstructing the tuple.

• Example: int num = tuple.Item1; string str = tuple.Item2;

• Example: (int num, string str) = tuple...read more