Yesterday’s QoD:
First-in, first-out (FIFO) queuing is an example of which QoS service model?
Here are the results:
| Answer | % |
| Best-Effort Service | 84% |
| Differentiated Service | 6% |
| Port-Level Service | 6% |
| Integrated Service | 4% |
The answer: Best-Effort Service
While “best-effort service” should probably get a marketing makeover, it is considered a QoS service model.
Best-Effort Service
Best effort is a single service model in which an application sends data whenever it must, in any quantity, and without requesting permission or first informing the network. For best-effort service, the network delivers data if it can, without any assurance of reliability, delay bounds, or throughput.
The Cisco IOS QoS feature that implements best-effort service is first-in, first-out (FIFO) queuing. Best-effort service is suitable for a wide range of networked applications such as general file transfers or e-mail.
