Nokia
4A0-107 · Question #3
4A0-107 Question #3: Real Exam Question with Answer & Explanation
The correct answer is A. The first 3 bits of the DSCP value are copied directly into the EXP field on the first network B. The EXP bits are set on the first network egress, based on a combination of the SAP- ingress. See the full explanation below for the reasoning.
Question
When deploying an Alcatel-Lucent MPLS network with QoS, how are the EXP bits set?
Options
- AThe first 3 bits of the DSCP value are copied directly into the EXP field on the first network
- BThe EXP bits are set on the first network egress, based on a combination of the SAP- ingress
- CThe 3 priority bits are copied directly from the dot1p header into the EXP field of the first MPLS
- DThe EXP bits are set based on a default map that translates DSCP codes into internal forwarding
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