ITGSS Certified DevOps Engineer Practice Test

Which Kubernetes feature is crucial for enforcing secure network communication?

1. Service discovery

2. Network policies

3. Pod configurations

4. Volume management

The correct answer is: Network policies

Network policies are essential in Kubernetes for enforcing secure network communication. They provide a mechanism to control the traffic flow between pods and services, defining which pods can communicate with each other and under what conditions. By implementing network policies, administrators can create rules that restrict access based on factors like pod labels, namespaces, and IP addresses. This enhances security by ensuring that only authorized communications are permitted, thereby mitigating the risk of unauthorized data access and potential attacks. Service discovery, while important for enabling pods to find and communicate with each other, does not inherently enforce communication rules; it simply makes connection locations available. Pod configurations and volume management relate more to the setup of individual application environments and storage, rather than directly securing network communication. Hence, network policies stand out as the dedicated solution for managing and enforcing secure communication within a Kubernetes environment.