350-501 Automation and Quality of Services Practice Question
In the DiffServ model, which DSCP value is used for Expedited Forwarding (EF) to support voice traffic?
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
✓
DSCP 46
EF is defined by DSCP 46 (binary 101110) to provide low-loss, low-latency service for voice.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DSCP 0
Why it's wrong here
DSCP 0 is Best Effort (DF).
- ✓
DSCP 46
Why this is correct
EF is DSCP 46 as per RFC 3246.
- ✗
DSCP 40
Why it's wrong here
DSCP 40 is not EF; EF is 46.
- ✗
DSCP 34
Why it's wrong here
DSCP 34 is AF41, not EF.
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