200-901 host network driver Practice Question
Which TWO Docker network drivers allow a container to communicate with the host's network stack directly?
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
✓
host
Host mode shares the host's network stack directly with the container, allowing it to use the host's IP and ports. Macvlan assigns a MAC address to the container, making it appear as a separate device on the host's network, thus enabling direct communication with the host's network stack. Overlay is for multi-host communication, bridge provides isolation, and none disables networking.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
bridge
Why it's wrong here
Bridge mode provides network isolation, so the container cannot directly communicate with the host's network stack.
- ✗
none
Why it's wrong here
None mode disables networking entirely, preventing any communication.
- ✗
overlay
Why it's wrong here
Overlay mode is designed for multi-host communication across a swarm, not for direct host communication.
- ✓
host
Why this is correct
Host mode removes network isolation, allowing the container to use the host's network stack directly.
- ✓
macvlan
Why this is correct
Macvlan assigns a MAC address to each container, making it appear as a separate device on the host's network and enabling direct communication.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 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 200-901 exam.