KCNA Container Orchestration Practice Question
Which TWO of the following are true about container networking basics? (Choose 2)
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
✓
Containers on the same host can communicate via a bridge network
Containers utilize network namespaces to isolate their network stack, so each container has its own network namespace (C). On the same host, containers can communicate through a bridge network, which provides connectivity via a virtual switch (B). Option A is false because containers on different nodes can communicate via overlay networks or routing. Option D is false because container networking typically requires configuration (e.g., Docker's bridge or CNI plugins). Option E is false because containers usually have their own IP addresses within the bridge network, not sharing the host's IP directly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Containers can only communicate if they are on the same node
Why it's wrong here
With overlay networks, containers on different nodes can communicate.
- ✓
Containers on the same host can communicate via a bridge network
Why this is correct
A bridge network connects containers to the same L2 network, allowing communication.
- ✓
Each container has its own network namespace
Why this is correct
Network namespaces provide isolation of network interfaces, routing tables, etc.
- ✗
Container networking does not require any configuration
Why it's wrong here
Container networking often requires configuration of bridges, overlay networks, etc.
- ✗
All containers share the host's IP address
Why it's wrong here
Containers typically have their own IP addresses assigned from the bridge network.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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