Drag and drop each trunk encapsulation type on the left to its matching standard or characteristic on the right.
Drag a concept onto its matching description — or click a concept then click the description.
Open standard (IEEE); inserts 4-byte tag; supports native VLAN
Cisco proprietary; encapsulates entire frame; no native VLAN concept
VLAN 1 by default; frames sent untagged on trunk
Adds 26-byte header and 4-byte trailer
Contains 12-bit VLAN ID (0–4095)
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
802.1Q: Open standard (IEEE); inserts 4-byte tag; supports native VLAN
802.1Q is an open standard that inserts a 4-byte tag, supports native VLAN, and is the default on modern switches. ISL is Cisco proprietary, encapsulates the entire frame, and does not support native VLAN.
Visual reference
About these practice questions
Courseiva writes every 350-401 question from scratch — 1,175 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 →
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco 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 350-401 exam.