Exam 300-430 topic 1 question 23 discussion

Actual exam question from Cisco's 300-430

Question #: 23
Topic #: 1

A corporation has a wireless network where all access points are configured in FlexConnect. The WLC has a Data WLAN and a VoWiFi WLAN implemented where centrally-switched SSID is configured for the APs. Which QoS configuration must be implemented for the wireless packets to maintain the marking across the wired and wireless network?

A. Set QoS to Platinum.
B. Enable CAC.
C. Allow WMM.
D. Trust DSCP.

Show Suggested Answer

Suggested Answer: D 🗳️

by Pawnstar at Sept. 21, 2021, 11:48 a.m.

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rrahim

4 months, 1 week ago

Selected Answer: D

In a FlexConnect deployment where access points (APs) are configured with centrally-switched SSIDs, the Trust DSCP QoS configuration must be implemented to maintain consistent QoS markings across the wired and wireless network. Here’s why: Trust DSCP: DSCP (Differentiated Services Code Point) is a Layer 3 QoS marking that provides end-to-end traffic prioritization. By configuring the Wireless LAN Controller (WLC) and APs to trust DSCP, the QoS markings in the IP headers of packets are preserved as traffic traverses both the wired and wireless network. This ensures consistent QoS treatment for applications like voice (VoWiFi) and data. Centrally-Switched SSIDs: In centrally-switched mode, traffic from the APs is tunneled back to the WLC. Trusting DSCP ensures that the QoS markings are maintained as traffic passes through the WLC and into the wired network.

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obifunk

6 months, 3 weeks ago

Selected Answer: D

D is correct

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GoldLeader

1 year, 5 months ago

D. Trust DSCP. Question is not asking what markings will be applied but what will allow whatever marking there is to exist and be maintained throughout it's journey over both the wired and wireless infrastructure.

upvoted 3 times

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