---
title: "Short note: Application of queuing system"
subject: "Simulation and Modeling"
chapter: 4
key: "semester_8/simulation_and_modeling:short-note-queuing-application"
source: https://www.bctengineer.com/q/semester_8/simulation_and_modeling/short-note-queuing-application
site: BCT Engineering
---

# Short note: Application of queuing system

Simulation and Modeling · Chapter 4: Queuing system

- Asked in: 2070 Bhadra, 3 marks
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_8/simulation_and_modeling/short-note-queuing-application
- Whole chapter: https://www.bctengineer.com/md/semester_8/simulation_and_modeling/chapter-4

## Question

Write a short note on application of queuing system.

## Short answer

Queuing systems are applied in banks (teller staffing), computer systems (CPU scheduling, network buffers), telecommunications (call centers), healthcare (patient flow, bed allocation), transport (traffic signals, toll plazas), and manufacturing (machine repair, job queues). They help determine resource levels to keep waiting times acceptable.

## Answer

A **queuing system** is a system where customers arrive, wait for a service and leave. Queuing theory and queue simulation are used wherever waiting happens.

**Applications**

- **Banks and shops**: finding the number of tellers or checkout counters that keeps waiting time acceptable.
- **Computer systems**: CPU scheduling, disk and printer queues, and network routers where packets wait in buffers. Buffer size and processor speed are chosen using queuing models.
- **Telecommunication**: telephone exchanges and call centres, to decide the number of lines and operators.
- **Healthcare**: OPD and emergency room patient flow, number of beds and doctors.
- **Transport**: traffic signals, toll plazas, airport runways and check-in desks.
- **Manufacturing**: jobs waiting for machines, and the machine repair problem.

Example: if a hospital OPD gets 20 patients per hour and a doctor treats 6 per hour, at least four doctors are needed (20 / 6 = 3.3), otherwise the queue grows without limit. A queuing model also gives the average waiting time for each choice.

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. Which is an application of queuing systems?
   A. Deciding the number of tellers, lines, doctors or buffer sizes
   B. Computing the square root of a number
   C. Drawing circuit diagrams
   D. Compressing images
   Answer: A. Queue models are used wherever waiting occurs, for staffing and capacity decisions. (Key point: Application)

2. In computer systems, what do queuing models help choose?
   A. The keyboard layout
   B. Buffer size and processor speed
   C. The monitor colour
   D. The file name length
   Answer: B. Packets and jobs wait in buffers, so queue models size buffers and processors. (Key point: Computer systems)

3. With 20 patients/hour and a doctor treating 6/hour, how many doctors are at least needed?
   A. 3
   B. 2
   C. 4
   D. 7
   Answer: C. 20/6 = 3.3, so at least 4 doctors are needed; otherwise the queue grows without limit. (Key point: OPD example)

## Related in Simulation and Modeling

- [Queuing characteristics and application](https://www.bctengineer.com/question.md?key=semester_8%2Fsimulation_and_modeling%3Aqueuing-characteristics-application) — Simulation and Modeling, chapter 4
- [Queuing system, characteristics, Kendall notation](https://www.bctengineer.com/question.md?key=semester_8%2Fsimulation_and_modeling%3Aqueuing-characteristics-role-kendall) — Simulation and Modeling, chapter 4, asked 2×
- [Queuing system usefulness and types](https://www.bctengineer.com/question.md?key=semester_8%2Fsimulation_and_modeling%3Aqueuing-types-usefulness) — Simulation and Modeling, chapter 4
- [Queuing characteristics; D/M/1/LIFO/20/510](https://www.bctengineer.com/question.md?key=semester_8%2Fsimulation_and_modeling%3Aqueuing-dmlifo-application) — Simulation and Modeling, chapter 4
- [Queuing block diagram; M/M/4 and D/M/2](https://www.bctengineer.com/question.md?key=semester_8%2Fsimulation_and_modeling%3Aqueuing-block-diagram-mm4) — Simulation and Modeling, chapter 4
- [Queuing notation, default values, elements](https://www.bctengineer.com/question.md?key=semester_8%2Fsimulation_and_modeling%3Aqueuing-notation-defaults-elements) — Simulation and Modeling, chapter 4

## Related in other subjects

- [Queuing system and Kendall's notation](https://www.bctengineer.com/question.md?key=semester_8%2Ftelecommunications%3Aqueuing-system-kendall) — Telecommunications, chapter 6, asked 4×
- [Short note: Queuing theory in delay system](https://www.bctengineer.com/question.md?key=semester_8%2Ftelecommunications%3Ashort-note-queuing-delay) — Telecommunications, chapter 6
- [Application, system and device domain](https://www.bctengineer.com/question.md?key=semester_8%2Fmultimedia_system%3Aapplication-system-device-domain) — Multimedia System, chapter 1
- [Application of AR system](https://www.bctengineer.com/question.md?key=semester_5%2Fcomputer_graphics%3Aar-system-application) — Computer Graphics, chapter 1