Networking Questions
Practice questions for Networking topic in Kubernetes and Cloud Native Associate. 12 questions covering this domain.
Which Kubernetes add-on commonly provides cluster DNS so Pods can resolve Service names?
A team wants a Service name inside the cluster to resolve to an external DNS hostname without proxying traffic through Kubernetes. Which Service type ...
Which standard is used by Kubernetes networking plugins to implement the cluster network model on nodes?
A web application Pod needs to be accessible outside the Kubernetes cluster without relying on a cloud provider load balancer. The cluster has NodePor...
A NetworkPolicy is applied in the payments namespace that selects all Pods and sets an empty ingress rule (`ingress: []`). What is the effect on traff...
A developer needs to access a Pod's application directly from their laptop for debugging without creating a Service. Which kubectl command establishes...
A frontend Pod has an egress policy allowing traffic to a backend namespace. The backend Pods are ingress isolated and do not allow traffic from front...
A namespace adds a default deny egress policy and then notices Pods cannot resolve DNS names. Why is that expected?
A security team wants to add one policy that allows traffic and a second policy that explicitly denies a subset of it. What should they expect from Ku...
An operator tries to expose a Service on NodePort 28080 and the API rejects it under default settings. Why?
An engineer writes a NetworkPolicy ipBlock using the cluster Pod CIDR to target in-cluster workloads. What is the main problem with that approach?
A namespace admin writes a NetworkPolicy with an empty podSelector to create a broad rule. Which Pods does that selector match?
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