set 2

What is the smallest and simplest deployable unit object created and managed by Kubernetes?

• Node
• Container
• Pod
• Deployment

Answer explanation

A Pod represents a single instance of a running process in a cluster and can contain one or more containers. Nodes host Pods.

Which Kubernetes component is responsible for watching for newly created Pods and assigning them to Nodes?

• kube-apiserver
• etcd
• kube-scheduler
• kubelet

Answer explanation

The kube-scheduler is the control plane component that decides which Node a Pod should run on based on constraints and availability.

What is the primary function of the kubelet component?

• Storing cluster state
• Scheduling Pods onto Nodes
• Managing the container runtime
• Exposing the Kubernetes API

Answer explanation

The kubelet runs on each Node and ensures that containers described in PodSpecs are running and healthy. It interacts with the container runtime.

Which component acts as the central control plane and exposes the Kubernetes API?

• kube-proxy
• kube-apiserver
• etcd
• controller-manager

Answer explanation

The kube-apiserver validates and configures data for API objects (Pods, Services, etc.) and is the frontend for the control plane.

What is the primary role of etcd in a Kubernetes cluster?

• Running application containers
• Scheduling workloads
• Storing the cluster state
• Managing network policies

Answer explanation

etcd is a consistent and highly-available key-value store used as Kubernetes' backing store for all cluster data.

Which Kubernetes resource is typically used to manage stateless applications by ensuring a specified number of Pod replicas are running?

• StatefulSet
• DaemonSet
• Deployment
• Job

Answer explanation

Deployments manage ReplicaSets, providing declarative updates and scaling for stateless applications.

What type of software package bundles application code with all its dependencies, libraries, and configuration files?

• Virtual Machine
• Container
• Operating System
• Serverless Function

Answer explanation

Containers package application code and dependencies together, isolating them from the underlying infrastructure.

In Kubernetes, what is the process of assigning Pods to Nodes called?

• Replication
• Orchestration
• Scheduling
• Deployment

Answer explanation

Scheduling is the core function of the kube-scheduler, selecting appropriate Nodes for Pods based on resource requests and other factors.

What is the main benefit of using container orchestration systems like Kubernetes?

• Simplifying code writing
• Automating deployment & scaling
• Reducing storage costs
• Improving network latency

Answer explanation

Orchestrators automate the deployment, scaling, management, and networking of containerized applications.

Which of these is a standard specified by the OCI (Open Container Initiative)?

• Docker
• Kubernetes
• Image Specification
• Istio

Answer explanation

The OCI defines standards for container image formats (Image Specification) and runtime (Runtime Specification).