JNCIS-ENT Layer 2 Switching And VLANs Practice Question
An engineer must configure an EX Series switch trunk port to allow all VLANs while explicitly blocking VLAN 50. Which Junos configuration statement accomplishes this behavior?
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 interfaces ge-0/0/5 unit 0 family ethernet-switching interface-mode trunk vlan members all except 50
To allow all VLANs except a specific one on a trunk port, you use the member-all statement followed by the except member statement.
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 interfaces ge-0/0/5 unit 0 family ethernet-switching interface-mode trunk vlan members except [ 50 ]
Why it's wrong here
This statement is incomplete; you must specify 'member-all except 50' or list the specific permitted members.
- ✓
set interfaces ge-0/0/5 unit 0 family ethernet-switching interface-mode trunk vlan members all except 50
Why this is correct
Correct syntax for allowing all VLANs except VLAN 50 on a trunk port.
- ✗
set interfaces ge-0/0/5 unit 0 family ethernet-switching interface-mode trunk vlan members remove 50
Why it's wrong here
The 'remove' keyword is not used to prune specific VLANs from a trunk member list.
- ✗
set interfaces ge-0/0/5 unit 0 family ethernet-switching interface-mode trunk vlan members [ 1-4094 ] drop 50
Why it's wrong here
The 'drop' keyword is not valid in this context within Junos interface configuration.
Visual reference
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 JNCIS-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 JNCIS-ENT exam.