305-300 Container Virtualization Practice Question
You are using an overlay network in Docker Swarm. What is the standard protocol used for the control plane and data plane communication between nodes?
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
✓
VXLAN
VXLAN is the standard encapsulation protocol used by Docker overlay networks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
BGP
Why it's wrong here
Not used by Docker overlay.
- ✗
IPsec
Why it's wrong here
Used for encryption, but not the primary transport protocol.
- ✗
GRE
Why it's wrong here
Used for other tunnel types.
- ✓
VXLAN
Why this is correct
This is the encapsulation protocol for Docker overlay.
About these practice questions
Courseiva writes every 305-300 question from scratch — 194 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 LPI exam blueprint
This 305-300 practice question is part of Courseiva's free LPI 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 305-300 exam.