CCIE Pursuit Blog

October 27, 2008

Question Of The Day: 27 October, 2008

Filed under: Cisco,Cisco Certification — cciepursuit @ 10:31 am
Tags: , , , ,

 

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.

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