350-001 Cisco Certified Internetworking Expert Test Real Exam

Demo Question 17.

Answer: E

Explanation: The "priority" command is used to configure Low Latency queuing (LLQ) where the traffic assigned to the LLQ is given strict priority with FIFO queuing. The priority command can be configured in multiple classes, but it should only be used for voice-like, constant bit rate (CBR) traffic. If the traffic is not CBR, you must configure a large enough bandwidth parameter to absorb the data bursts. Configuring the priority command in multiple classes provides the ability to police the priority classes individually. For an example, refer to the following configuration: policy-map policy1 class voice1 priority 24 class voice2 priority 48 class data bandwidth 20 In this example, voice1 and voice2 classes of traffic go into the high priority queue and get strict priority queueing over data traffic. However, voice1 traffic will be rate-limited to 24 kbps and voice2 traffic will be rate-limited to 48 kbps. The classes will be individually rate-limited (and given first-in first-out [FIFO] treatment) even if they go into the same queue. Reference: http://www.cisco.com/en/US/products/sw/iosswrel/ps1830/products_feature_guide09186a0080087b13.html