CCNP ENCOR (350-401) practice questions

QoS

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Q6. In QoS environment, which one of the following marking field name is associated with 802.1Q?

A. DSCP

B. CoS

C. TID

D. EXP

E. IPP

Correct Answer: B

Explanation:

DSCP (Differentiated Services Code Point) - It is associated with IPv4 and IPv6 headers.
CoS (Class of Service) - It is associated with 802.1Q and used over VLAN trunk.
TID (Traffic ID) - It is associated with 802.11 and used over Wi-Fi network.
EXP (EXPerimental) - It is associated with MPLS label and used over MPLS WAN.
IPP (IP Precedence) - It is associated with IPv4 and IPv6 headers.

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