Q20Networking
How does an untrusted interface on the boundary of an administrative domain process incoming packets?
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It's A
In the context of Quality of Service (QoS) and trust boundaries, an "untrusted" interface usually does not trust the markings (like DSCP or CoS values) on incoming packets.
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Selected Answer: A
These questions need to be a bit more explanatory. I was thinking untrusted in the context of VLANs.
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Selected Answer: A
Answer : A > In PFC QoS, trust means accepting something as valid and using it as the basis for the initial internal DSCP value. Ports are untrusted by default, which sets the initial internal DSCP value to zero. You can configure ports to trust received CoS, IP precedence, or DSCP.
Reference : https://www.cisco.com/en/US/docs/general/Test/dwerblo/broken_guide/qos.html