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.
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About these practice questions
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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.