Which one of the following is an application of queue data structure?

A queue is a data structure that follows the First In, First Out (FIFO) principle. It is used in scenarios where elements are processed in the order they arrive.

Option A: When a resource is shared among multiple consumers, a queue ensures that each consumer gets access in the order they requested. This prevents starvation and ensures fairness.

Option B: In asynchronous data transfer between processes, data is often buffered. A queue stores incoming data until the receiving process is ready, maintaining the order of arrival.

Option C: Load balancing distributes tasks among multiple servers. A queue can manage incoming tasks, ensuring each server processes them in the order they were received.

Since all individual options describe valid applications of a queue, the correct choice is 'All of the above'.