Ethical Hacking Essentials Practice Test

What Kubernetes feature describes managing a cluster of nodes that run containerized applications and allocating and deallocating resources to the containers?

1. Self-healing

2. Service Discovery

3. Automatic bin packing

4. Namespace Isolation

The correct answer is: Automatic bin packing

The feature that describes managing a cluster of nodes running containerized applications while allocating and deallocating resources to those containers is automatic bin packing. This process involves scheduling containers efficiently across a cluster by evaluating resource availability and workloads, ensuring that resources are utilized optimally. Kubernetes uses this feature to automatically decide where to place a container based on its resource requirements and the availability of nodes in the cluster, thus maximizing resource usage while also accommodating the needs of running applications. Self-healing refers to the ability of Kubernetes to automatically replace or reschedule containers that fail or stop working during operation. While this is an important aspect of Kubernetes, it does not directly address resource allocation for containers. Service discovery allows applications within Kubernetes to find and communicate with each other, which is essential for microservices architecture but does not pertain directly to resource management for containers. Namespace isolation is a feature that helps in organizing resources and securing environments within a Kubernetes cluster by providing distinct spaces for different applications or teams. Although it provides security and organizational benefits, it does not encompass resource allocation or management, which is the core of automatic bin packing.