350-001 Cisco Certified Internetworking Expert Exam Questions

Demo Question 9.

Answer: C

Explanation: WFQ provides traffic priority management that automatically sorts among individual traffic streams without requiring that you first define access lists. WFQ can also manage duplex data streams such as those between pairs of applications, and simplex data streams such as voice or video. There are two categories of WFQ sessions: high bandwidth and low bandwidth. Low-bandwidth traffic has effective priority over high-bandwidth traffic, and high-bandwidth traffic shares the transmission service proportionally according to assigned weights. Example: The following example requests a fair queue with a congestive discard threshold of 64 messages, 512---dynamic queues, and 18 RSVP queues: interface Serial 3/0 ip unnumbered Ethernet 0/0 fair-queue 64 512 18 When WFQ is enabled for an interface, new messages for high-bandwidth traffic streams are discarded after the configured or default congestive messages threshold has been met. However, low-bandwidthconversations, which include control message conversations, continue to enqueue data. As a result, the fair queue may occasionally contain more messages than its configured threshold number specifies.