KCNA Container Orchestration Practice Question
Which TWO of the following are required fields when defining a container in a Kubernetes Pod spec? (Choose 2)
⚠ Common exam trap
CNCF often tests the misconception that `ports` or `resources` are required because they appear in most example Pod specs, but the KCNA exam expects you to know that only `name` and `image` are mandatory per the Kubernetes API specification.
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
✓
image
In a Kubernetes Pod spec, the `name` and `image` fields are mandatory for each container definition. The `name` field uniquely identifies the container within the Pod, and the `image` field specifies the container image to run (e.g., `nginx:1.25`). Without these two fields, the Pod creation will fail with a validation error from the Kubernetes API server.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
env
Why it's wrong here
Environment variables are optional.
- ✓
image
Why this is correct
The 'image' field specifies the container image to run and is required.
- ✓
name
Why this is correct
The 'name' field is required for each container in a Pod spec.
- ✗
resources
Why it's wrong here
Resource requests and limits are optional.
- ✗
ports
Why it's wrong here
Ports are optional; they are used for documentation but not required.
Go deeper
Related to this question
Learn chapter
Kubernetes Overview and Core Components
Key term
ReplicaSet and Replication
A ReplicaSet ensures a specified number of identical pod instances are running at all times in Kubernetes, using replication to maintain availability and stability.
Key term
Kubernetes API Primitives
Kubernetes API Primitives are the basic building blocks that the Kubernetes API uses to represent and manage the state of a cluster, such as Pods, Services, Deployments, and Namespaces.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.