350-801 Question #435: Real Exam Question with Answer & Explanation

The correct answer is C: priority 5000. To configure Low Latency Queuing (LLQ) and guarantee 5 Mbps bandwidth for voice traffic within a class map, the priority command followed by the bandwidth in kilobits per second must be used.

Infrastructure and Quality of Service

Question

An engineer configures Class-Based Weighted Fair Queuing, but must still configure Low Latency Queuing to prioritize voice audio traffic and guarantee 5 Mbps of bandwidth. Which Cisco IOS command must be run in the voice class map?

Options

Apriority
Bpriority 5
Cpriority 5000
Dpriority level 5

Explanation

To configure Low Latency Queuing (LLQ) and guarantee 5 Mbps bandwidth for voice traffic within a class map, the priority command followed by the bandwidth in kilobits per second must be used.

Common mistakes.

A. The priority command without a bandwidth value enables priority queuing but does not guarantee a specific bandwidth.
B. priority 5 would reserve 5 kilobits per second, not 5 megabits per second.
D. priority level is not the correct syntax for specifying bandwidth in LLQ configuration within a class map.

Concept tested. Cisco IOS LLQ bandwidth configuration

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_con_pshq/configuration/15-mt/qos-con-pshq-15-mt-book/qos-con-pshq-llq.html

Topics

#QoS#LLQ#Voice Traffic#Cisco IOS

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