Kubernetes Intermediate Quiz

← Back to Kubernetes Quiz

Welcome! ☸️
Test your knowledge on Storage, Networking, and Controllers.

Instructions:

• Select the best answer for each question.
• Your score will be shown at the end.
• Aim for 100% to prove you are ready for the Advanced level!

#

What is a PersistentVolume (PV)?

A piece of storage in the cluster provisioned by an administrator or dynamically

A request for storage by a user

A local disk on the node

A temporary cache

A PersistentVolume (PV) is a piece of storage in the cluster that has been provisioned by an administrator or dynamically provisioned using Storage Classes.

#

Which object allows a user to request storage (claim a PV)?

PersistentVolumeClaim (PVC)

StorageClass

VolumeMount

ClaimVolume

A PersistentVolumeClaim (PVC) is a request for storage by a user.

#

What is a ConfigMap used for?

Decoupling configuration artifacts from image content

Storing passwords and keys

Managing network rules

Scheduling pods

ConfigMaps store non-confidential data in key-value pairs.

#

How are Secrets different from ConfigMaps?

Secrets are intended to hold confidential data and are base64 encoded

Secrets are encrypted by default in etcd (without extra config)

Secrets are only for external access

ConfigMaps cannot store strings

Secrets are specifically intended to hold confidential data like passwords or tokens.

#

What is a DaemonSet?

Ensures that all (or some) Nodes run a copy of a Pod

Runs a job to completion

Manages stateful applications

Exposes a service externally

A DaemonSet runs a copy of a Pod on all (or selected) nodes. Useful for logging/monitoring agents.

#

What is the function of an Ingress?

Manages external HTTP/HTTPS access to services

Connects pods within the same node

Encrypts traffic between pods

Balances load between nodes only

Ingress exposes HTTP and HTTPS routes from outside the cluster to services within the cluster.

#

What is a StatefulSet used for?

Applications that require stable, unique network identifiers and persistent storage

Stateless web servers

One-off tasks

Daemon processes

StatefulSet manages stateful applications, providing stable network IDs (pod-0, pod-1) and persistent storage.

#

Which probe checks if the container is ready to accept traffic?

Readiness Probe

Liveness Probe

Startup Probe

Traffic Probe

A Readiness Probe determines if a container is ready to serve traffic. If failed, it is removed from Service endpoints.

#

What does a Liveness Probe do?

Checks if the container is running; if it fails, kubelet restarts it

Checks if the application started

Checks network connectivity

Checks storage availability

A Liveness Probe detects if the application has crashed or deadlocked. If it fails, the container is restarted.

#

What is a Job in Kubernetes?

Creates one or more Pods and ensures they successfully terminate

Runs a service continuously

Manages network traffic

Stores configuration

A Job creates Pods that run to completion (e.g., a batch task).

#

What is a CronJob?

A Job that runs on a time-based schedule

A continuous background process

A job that runs only once

A monitoring tool

A CronJob creates Jobs on a repeating schedule (like a cron file in Linux).

#

usage of ClusterIP: None in a Service?

It creates a Headless Service for direct Pod discovery

It disables the service

It exposes the service externally

It restricts access to the service

Setting ClusterIP: None creates a Headless Service, often used with StatefulSets for direct pod-to-pod communication via DNS.

#

What is an InitContainer?

Specialized containers that run before app containers in a Pod

A container that initializes the node

A sidecar container

A container that runs after the main app

InitContainers run to completion before any app containers start. They are used for setup scripts or waiting for dependencies.

#

What is a StorageClass?

Describes the "classes" of storage offered (e.g., fast, standard) for dynamic provisioning

A specific hard drive

A backup location

A database type

StorageClass allows administrators to define different tiers of storage and enables dynamic provisioning of PVs.

#

What is a Static Pod?

A Pod managed directly by the kubelet on a specific node, not the API server

A Pod that never moves

A Pod with a static IP

A read-only Pod

Static Pods are managed directly by the kubelet (via config files in /etc/kubernetes/manifests) and mirror pods are created on the API server.

#

How do you inject environment variables into a Pod from a ConfigMap?

Using envFrom or valueFrom in the Pod spec

Using volumeMounts

Using kubectl inject

Passing flags to the container command

You can use valueFrom to reference a specific key or envFrom to load all keys as environment variables.

#

what is the command to restart a deployment without changing the YAML?

kubectl rollout restart deployment

kubectl restart deployment

kubectl reload deployment

kubectl update deployment

kubectl rollout restart triggers a rolling restart of the deployment, useful for picking up config map changes.

#

What ensures that a Pod creates a specific folder on the host node?

hostPath Volume

emptyDir Volume

persistentVolume

nfs Volume

A hostPath volume mounts a file or directory from the host node's filesystem into your Pod.

#

What is a ServiceAccount?

An identity provided to processes that run in a Pod to contact the API Server

A user account for a human

A billing account

A login for the node

ServiceAccounts are for processes running in Pods. User accounts are for humans.

#

What does emptyDir volume do?

Creates a temporary volume that exists as long as the Pod is running

Mounts an empty directory from the host

Deletes all files in the directory

Creates a persistent volume

emptyDir is created when a Pod is assigned to a Node and exists as long as that Pod is running on that node. It is initially empty.

Quiz Progress

0 / 0 questions answered (0%)

0 correct

Quiz Complete!

0%

Reset quiz

---

📚 Study Guides

• Kubernetes Tutorials
• Kubernetes Interview Questions

---

📬 Weekly DevOps, Cloud & Gen AI quizzes & guides