- A
No special configuration; containers in a pod can communicate via container names.
Podman pods provide shared network namespace; containers can resolve each other.
- B
Use 'podman network create' and connect both containers to that network.
Why wrong: This would work but is unnecessary if they are in the same pod.
- C
Set environment variable LOGGER_HOST in nginx container.
Why wrong: That would require manual configuration and does not leverage pod DNS.
- D
Create a network with --internal and --ip-range.
Why wrong: Not needed; pod networking handles this.
Question 415 of 537
Containers in a Pod: Accessing Each Other by Hostname Without Special Config
This EX200 practice question tests your understanding of manage containers. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: pod network namespace. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An administrator creates a pod named 'webpod' containing two containers: 'nginx' and 'logger'. The goal is for the nginx container to access the logger container via hostname 'logger'. Which network configuration is required?
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
✓
No special configuration; containers in a pod can communicate via container names.
In Podman, containers within the same Pod share the same network namespace. This means they can communicate with each other using the container name as a hostname, which is resolved via the Pod's internal DNS or /etc/hosts. No additional network configuration is required for inter-container communication within a Pod.
Key principle: Pod network namespace
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
No special configuration; containers in a pod can communicate via container names.
Why this is correct
Podman pods provide shared network namespace; containers can resolve each other.
Related concept
Pod network namespace
- ✗
Use 'podman network create' and connect both containers to that network.
Why it's wrong here
This would work but is unnecessary if they are in the same pod.
- ✗
Set environment variable LOGGER_HOST in nginx container.
Why it's wrong here
That would require manual configuration and does not leverage pod DNS.
- ✗
Create a network with --internal and --ip-range.
Why it's wrong here
Not needed; pod networking handles this.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap is that candidates confuse standalone container networking (e.g., 'podman run') with pod networking, assuming they need to create a custom network or use environment variables for inter-container communication, when in fact the shared network namespace handles it automatically.
Detailed technical explanation
How to think about this question
Under the hood, each Pod in Kubernetes gets a unique IP address and a network namespace shared by all its containers. The kubelet or container runtime (e.g., CRI-O) sets up /etc/hosts entries for each container name, allowing DNS-like resolution. This design simplifies service discovery within a Pod and avoids the overhead of separate network interfaces for each container.
KKey Concepts to Remember
- Pod network namespace
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Pod network namespace
Real-world example
How this comes up in practice
A practitioner preparing for the EX200 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Pod network namespace Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Visual reference
What to study next
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Review pod network namespace, then practise related EX200 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this EX200 question test?
Manage containers — This question tests Manage containers — Pod network namespace.
What is the correct answer to this question?
The correct answer is: No special configuration; containers in a pod can communicate via container names. — In Podman, containers within the same Pod share the same network namespace. This means they can communicate with each other using the container name as a hostname, which is resolved via the Pod's internal DNS or /etc/hosts. No additional network configuration is required for inter-container communication within a Pod.
What should I do if I get this EX200 question wrong?
Review pod network namespace, then practise related EX200 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Pod network namespace
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Last reviewed: Jun 24, 2026
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