The header stores the encrypted password used to generate the signature.
The signature is generated using the encoded header, encoded payload, and a secret key. If the header is modified, the signature verification fails.
The signature only protects the payload section; changes to the header do not affect token validation.
The header contains the final signature hash generated after token creation.
A news platform wants to send a morning digest email to all subscribers every day at 7 AM. Sweta sets up the beat schedule, starts Redis and Celery Beat, and then claims: "The Worker is optional here. Beat handles the scheduling and the execution of the task, so we do not need a separate Worker process."
Is Sweta's claim correct? Choose the best answer.
No. Celery Beat is only a scheduler. At 7 AM, it pushes a task message into the Redis broker and stops there. Without a running Celery Worker to pick up that message, the digest email is never actually sent.
A startup is building a food delivery app. The customer-facing screen shows live order status updates: "Order Placed → Preparing → Out for Delivery → Delivered".
Each stage is triggered by the restaurant or the delivery rider updating the status on their end. The customer's screen should reflect these changes in real time without refreshing the page.
Two developers debate about the right technology: Developer A says: "Let's use Server-Sent Events. It's the right fit here." Developer B says: "No, we must use WebSockets. SSE won't work."
Who is correct, and why?
Developer B is correct. SSE cannot transmit JSON data, so structured order status objects cannot be pushed to the browser.
Developer B is correct. SSE connections do not reconnect automatically when the network is briefly interrupted, making it unreliable for a live tracker.
Developer A is correct. The tracker only requires the server to push status updates to the customer, without the customer sending data back through the same connection. SSE is purpose-built for exactly this one-way server-to-client push scenario.
Developer A is correct, but only if WebSockets are set up as a mandatory fallback, since SSE requires HTTP/2 to function.
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The IIT Madras BS Modern Application Development II (MAD 2) End Term paper sat on 13 Sept 2026, in the May 2026 term, set 1: 30 questions for 95.5 marks in 180 minutes. The first 3 questions are below. Sign in with Google — it is free — to see the whole paper with its answers and explanations, in learning mode or as a timed mock test.
| Feature | MAD 2 End Term 13 Sept 2026 Set 1 at a glance |
|---|---|
| Term | May 2026 term |
| Subject | Modern Application Development II |
| Course code | BSCS2006 |
| Questions | 30 |
| Marks | 95.5 |
| Duration | 180 min |
| MCQ | 19 |
| MSQ | 11 |
| Official paper | Modern Application Development Ii 13 Sep 26 (Session 2) |
| Negative marking | No negative marking. |
| Updated |
