EX280 Networking And Network Policies Practice Question
An administrator needs to create a Service of type ClusterIP that exposes an application running on port 8080 inside the container, mapping it to port 80 on the Service. Which command should the administrator use?
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
✓
oc expose pod frontend --port=80 --target-port=8080 --type=ClusterIP
The oc expose service or oc create service command correctly maps the targetPort inside the container to the service port using the syntax --port=80 --target-port=8080.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
oc create service clusterip frontend --tcp=80:8080
Why it's wrong here
This command syntax does not properly establish a standard targetPort mapping for arbitrary container ports without a predefined generator.
- ✗
oc create service clusterip frontend --port=80 --port=8080
Why it's wrong here
Defining multiple --port flags without targetPort specification results in misconfigured port mapping.
- ✗
oc expose deployment frontend --port=8080 --target-port=80
Why it's wrong here
The ports are inverted; service port should be 80 and targetPort should be 8080.
- ✓
oc expose pod frontend --port=80 --target-port=8080 --type=ClusterIP
Why this is correct
The expose command creates a service and properly sets the service port and container targetPort.
About these practice questions
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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 Red Hat exam blueprint
This EX280 practice question is part of Courseiva's free Red Hat 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 EX280 exam.