350-501 Automation and Quality of Services Practice Question
In the DiffServ model, which per-hop behavior (PHB) is associated with the AF31 DSCP value?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AF31
DSCP 26 (binary 011010) corresponds to AF31, which is part of the Assured Forwarding class with low drop probability and medium priority.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CS3
Why it's wrong here
CS3 is DSCP 24.
- ✗
AF41
Why it's wrong here
AF41 is DSCP 34.
- ✗
EF
Why it's wrong here
EF is DSCP 46.
- ✓
AF31
Why this is correct
AF31 is DSCP 26.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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