JNCIP-ENT IP Telephony Features Practice Question
An administrator needs to enable LLDP globally on an EX Series switch running Junos OS to support IP phones. Which command accomplishes this task?
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
✓
set lldp global-enable
LLDP is enabled globally under the protocols hierarchy in Junos OS.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
set system lldp enable
Why it's wrong here
Junos does not place LLDP configuration under the system hierarchy.
- ✓
set lldp global-enable
Why this is correct
This option is incorrect; lldp is configured directly under protocols.
- ✗
set ethernet-switching-options lldp
Why it's wrong here
LLDP is a Layer 2 discovery protocol managed under protocols, not switching-options.
- ✓
set protocols lldp
Why this is correct
Enabling LLDP globally uses the set protocols lldp command.
About these practice questions
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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.