JNCIP-ENT IP Telephony Features Practice Question
Which THREE parameters are typically included in an LLDP-MED network policy TLV for voice application? (Choose three.)
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
✓
VLAN ID
LLDP-MED network policies specify VLAN ID, Layer 2 priority (802.1p), and Layer 3 DSCP markings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
VLAN ID
Why this is correct
The voice VLAN ID is a core component of the network policy TLV.
- ✗
IP Phone MAC Address
Why it's wrong here
MAC addresses are learned dynamically via discovery, not defined in network policies.
- ✗
Switch Power Supply Serial Number
Why it's wrong here
Power supply serial numbers are never part of LLDP-MED voice policies.
- ✓
DSCP Value (Layer 3 QoS)
Why this is correct
DSCP marking values are advertised for Layer 3 QoS treatment.
- ✓
Layer 2 Priority (802.1p)
Why this is correct
802.1p priority is included to prioritize voice frames at Layer 2.
Visual reference
About these practice questions
Courseiva writes every JNCIP-ENT question from scratch — 336 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIP-ENT practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JNCIP-ENT exam.