Talking Fields
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Free · For Introduction to IoT by Misra, Mukherjee & Roy

The IoT syllabus, as a game you’ll actually finish.

Seventeen chapters told as one story, 496 questions that explain themselves, and hands-on labs where networks break, ciphers crack and sensors lie.

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A quiz question with the explanation panel open: the answer, why it is right, the exam line, and the tricky words explained.
17chapters as story episodes
496questions, each explained
12hands-on labs
250+tricky words in plain language

Every answer teaches

Wrong answers are where you learn the most.

After every question you get the reason in plain words, the exact line examiners look for, the tricky words explained, and the section of the textbook to reread. You never have to guess why.

  • Section numbers match the textbook, so you can flip straight to the page.
  • Keywords stay exactly as the book writes them, ready for your exam answers.
  • Every miss goes into your mistakes deck, so you can fix it later.
The home field: seventeen plots, one per chapter, growing from seed to tomato plant as you earn stars.

Hands-on labs

Learn it by breaking it.

Twelve small experiments you can poke at. Each one has a mission and the textbook’s own rule beside it.

Episode 01 Topology builder Build star, mesh, bus and ring networks, count their links, then break a host or a link and see what fails. Open lab → Episode 01 OSI journey Walk a message down seven layers, across a router that only needs three, and up the other side. Watch its PDU name change. Open lab → Episode 02 Cipher wheel Encrypt and decrypt with the book's additive substitution cipher, then crack secret messages by brute force. Open lab → Episode 05 Sensor error lab Add offset, drift, noise, quantization and limits to a temperature sensor and watch the reading go wrong. Then solve mystery sensors. Open lab → Episode 07 Who am I? Radio Mela A technology describes itself one clue at a time. Guess it with as few clues as you can. Open lab → Episode 08 MQTT post office Publishers send to topics, the broker forwards to subscribers. Change QoS, make the network unreliable, and watch what arrives. Open lab → Episode 10 Cloud models sorter See who manages what in SaaS, PaaS and IaaS, then sort ten cards into the right service or deployment model. Open lab → Episode 11 Fog or cloud? Decide where each job should be processed: in the nearby fog or the far-away cloud. Watch the data make the trip. Open lab → Episode 16 Ultrasonic ping Move an obstacle, fire the ultrasonic sensor and watch the NodeMCU sketch turn echo time into distance, then trip the obstacle alarm. Open lab → Episode 17 KNN playground Drop an unknown point among class M squares and class N circles, change k, and watch the nearest neighbours vote. Open lab → Episode 17 k-means stepper Pick random centroids, assign points, move the centroids, repeat, and watch the clusters settle. Open lab → Episode 17 Confusion matrix calculator Change TP, FN, FP and TN for the book's cancer-prediction example and watch accuracy, precision, recall and Fβ respond. Open lab →
MQTT post office lab: publishers, a broker and subscribers, with a log of PUBLISH and PUBACK messages. KNN playground: an unknown point with dashed lines to its three nearest neighbours and the vote result.

More ways to revise

Ten minutes before class? There’s a mode for that.

Flashcards

Word cards for the tricky terms and question cards with the reason on the back. Mark what you know; the rest comes back.

Lightning round

Sixty seconds, as many right as you can. Every miss is explained at the end, and your best score goes on the board.

Mistakes deck

Everything you got wrong, in one place. Fix a question and it leaves the deck for good.

The viva

Clear all seventeen episodes and Rao Sir calls you in: 25 mixed questions against the clock.

The whole syllabus

Seventeen chapters, one story.

Ira, a first-year student, promises her grandmother that the family’s tomato field will learn to talk. Each textbook chapter is one episode of that promise.

Part OneIntroduction

  1. 01The Night the Fest Wi-Fi DiedCh. 1 · Basics of Networking · 33 questions
  2. 02The Stolen Phone NumbersCh. 2 · Basics of Network Security · 38 questions
  3. 03Rao Sir's Old StoriesCh. 3 · Predecessors of IoT · 28 questions

Part TwoInternet of Things

  1. 04The Day Things Began to TalkCh. 4 · Emergence of IoT · 25 questions
  2. 05Eyes, Ears and Hands for the FarmCh. 5 · IoT Sensing and Actuation · 33 questions
  3. 06Think Here, or Think There?Ch. 6 · IoT Processing Topologies and Types · 19 questions
  4. 07The Great Radio MelaCh. 7 · IoT Connectivity Technologies · 44 questions
  5. 08The Languages of MachinesCh. 8 · IoT Communication Technologies · 55 questions
  6. 09The House of Many PlugsCh. 9 · IoT Interoperability · 28 questions

Part ThreeAssociated IoT Technologies

  1. 10Renting the SkyCh. 10 · Cloud Computing · 20 questions
  2. 11When the Cloud Comes Down to the FieldsCh. 11 · Fog Computing and Its Applications · 19 questions

Part FourIoT Case Studies and Future Trends

  1. 12Ajji's Talking FieldCh. 12 · Agricultural IoT · 15 questions
  2. 13The Night Bus to BengaluruCh. 13 · Vehicular IoT · 12 questions
  3. 14The Ambulance That Called AheadCh. 14 · Healthcare IoT · 15 questions
  4. 15Stories Under the Terrace SkyCh. 15 · Paradigms, Challenges, and the Future · 30 questions

Part FiveIoT Hands-on

  1. 16Lab NightCh. 16 · Beginning IoT Hardware Projects · 33 questions
  2. 17Teaching the Field to ThinkCh. 17 · IoT Analytics · 29 questions

Leaderboard

Grow the biggest field.

Points come from your best score on each episode. Only your display name and scores are shown, and you can hide yourself any time.

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Questions

Good to know

Is it really free?

Yes. Every episode, lab, flashcard and the lightning round are free, with no ads.

Do I need an account?

No. You can play as a guest and your progress stays in that browser. A free account keeps your progress safe, syncs it between your phone and laptop, and puts you on the leaderboard if you want.

Which textbook does it follow?

Introduction to IoT by Sudip Misra, Anandarup Mukherjee and Arijit Roy (Cambridge University Press). Every question is tagged with the textbook’s own section number, and keywords are kept exactly as the book writes them.

Is this an official resource?

No. Talking Fields is an independent study aid made by a student. It isn’t affiliated with the authors, the publisher or any university, and it doesn’t replace the textbook. Use it to understand and revise, then write your answers from the book.

What do you store about me?

Only what the game needs: your email and display name if you sign up, and your game progress. Read the privacy page for the details. You can delete your account and data from the account page at any time.

Found a mistake, or have a question?

Write to thanmaikarkera@gmail.com. Tell us the episode and question, and we’ll fix it.

Does it work on my phone?

Yes. The site works in any modern browser on phones, tablets and laptops.

Plant your first seed.

Episode 1 takes about ten minutes.

Start playing