Which One of the Following Is Application of Queue Data Structure?


Larry Thompson

In computer science, a queue is a linear data structure that follows the principle of FIFO (First-In-First-Out). It is an abstract data type that represents a collection of elements, where the entities are inserted at one end and removed from the other end. Queues find applications in various areas of computer science and real-life scenarios due to their efficient and organized nature.

Applications of Queue Data Structure:

Let’s explore some common applications of the queue data structure:

1. Process Scheduling:

In operating systems, queue data structures are extensively used for process scheduling. When multiple processes are running simultaneously on a computer system, they need to be scheduled in an orderly manner to ensure fairness and efficiency. The CPU scheduler maintains a queue of processes waiting to be executed, with each process being added to the end of the queue.

2. Printer Spooler:

A printer spooler manages multiple print jobs sent by different users or applications to a printer. Instead of sending print requests directly to the printer, they are added to a queue maintained by the spooler. The printer then processes each job in the order they were received, eliminating contention between multiple users or applications.

3. Breadth-First Search (BFS) Algorithm:

The breadth-first search algorithm is used for graph traversal and finding the shortest path in an unweighted graph. It explores all vertices at the same level before moving on to vertices at the next level. A queue is used to keep track of visited vertices and their adjacent vertices during the traversal process.

4. Waiting List Management:

In various real-life scenarios such as restaurants, hospitals, and customer support centers, queues are used to manage waiting lists. Customers or patients are added to the end of the queue and served in the order they arrived, ensuring fairness and maintaining a systematic approach.

5. Buffer Implementation:

A buffer is a temporary storage area that holds data before it is processed or transferred to its final destination. Queues are commonly used to implement buffers, especially in scenarios where data needs to be processed in a specific order or at a controlled rate.

6. Call Center Systems:

In call center systems, queues are used to manage incoming calls and distribute them among available agents. Calls are placed in a queue until an agent becomes available, ensuring that callers are served on a first-come-first-served basis.

  • Note: These are just a few examples of how queues can be applied in various domains. The flexibility and efficiency of queues make them an essential tool for solving many problems efficiently.

In conclusion, the queue data structure finds applications in diverse areas such as process scheduling, printer spooling, graph algorithms, waiting list management, buffer implementation, and call center systems. Understanding the properties and applications of queues can greatly help in designing efficient algorithms and managing real-life scenarios effectively.

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