Search – Lazy IITians Viva Prep

Aug 16, 2026

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1

followed the exact same pattern from viva rubrics

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
2

1.what are the frameworks used

Times asked 1

Official solution

SimpleStack bolo: Python, Flask, Jinja2, SQLAlchemy, SQLite, HTML/CSS/Bootstrap, maybe Chart.js.
3
2.how are you separating the user, admin, and doctors in models code

Times asked 1
Official solution

Simplemodels.py = har table ki class: columns, PK/FK, relationships. Yeh Model layer hai.
Suggested flow1) Classes list karo
2) Har table ka kaam 1 line
3) Relationships (1-M / M-M)
4) Constraints (unique, nullable)
Example
```
class Lot(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(80), nullable=False)
    spots = db.relationship('Spot', backref='lot', lazy=True)
```
4
3.point out where you have done the initialization for flask

Times asked 1
Official solution

SimpleFlask lightweight Python web framework — routes, request/response, templates. MAD1 ka backend yahi hai.
Example
```
from flask import Flask
app = Flask(__name__)

@app.route('/')
def home():
    return 'Hello'
```
Viva tipFlask micro hai: jo chahiye (DB, login, forms) khud jodte ho.
5
4.point out where you have used or initialized the database

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
6
6.Are you using template inheritance

Times asked 1
Official solution

SimpleBase template pe navbar/footer, child pages {% extends %} + {% block %} se content bharte hain. DRY.
Example
```
{# base.html #}
{% block content %}{% endblock %}

{# home.html #}
{% extends 'base.html' %}
{% block content %}
  <h1>Home</h1>
{% endblock %}
```
7
7.tell me how you're passing the data from the front end to the back end or vice versa

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
8
8.do you know about ORM

Times asked 1
Official solution

SimpleORM = Object Relational Mapping. Tables → Python classes. Raw SQL kam likhte ho.
Example
```
class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(120), unique=True)

User.query.get(5)  # SELECT ... WHERE id=5
```
9
9.tell me the order of execution of CSS styles

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
10

10.tell me amongst the frameworks or modules that you have imported, which was the first one you used when you set up your application

Times asked 1

Official solution

SimpleStack bolo: Python, Flask, Jinja2, SQLAlchemy, SQLite, HTML/CSS/Bootstrap, maybe Chart.js.

Advice: very calm and the bestest proctor u can get, she'll let u explain everything and be polite to her and see the viva rubriks before u submit ur project since i missed a partial feature in my project :(

See reviews Level1_20 MAD1 Level 1

Aug 16, 2026

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1

- ⁠asked for demo of features

Times asked 1

Official solution

SimpleDemo script pehle se practice: 5–7 min, Admin + User roles, saare mandatory features.
Suggested flow1) Register/login user
2) Admin login — CRUD
3) Approval/blacklist
4) Booking/apply + edge case
5) Search
6) Logout
Viva tipBolte-bolte dikhao. Code tab kholna jab poochhein.
2

- ⁠asked me to explain the full flow of how registration works

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
3
-saw all login registration everything, appointments availability

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
4
- ⁠asked to see data in the database

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
5
- ⁠asked if put can be used in place of post, what would happen if i used post in updation of records

Times asked 1
Official solution

SimplePOST naya janam (har baar naya id). PUT poori photo replace. PATCH sticker chipkao.
POST create, not idempotent. PUT full update, idempotent. PATCH partial.
POST ki jagah PUT se REST semantics toot. GET typically no body.
CRUD map: POST create, GET read, PUT/PATCH update, DELETE delete.
Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).
4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.
Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.
Example
```
POST /api/venues
PUT  /api/venues/1   {all fields}
PATCH /api/venues/1 {only name}
```
Project example: POST /api/venues create. PUT /venues/1 saari fields. PATCH sirf name.
6
- ⁠asked me to write a flask route to return hello world

Times asked 1
Official solution

SimpleLive Flask coding: chhota route likho, save, browser/curl se test. Syntax error terminal mein padho.
Example
```
@app.route('/ping')
def ping():
    return jsonify(ok=True)

@app.route('/even/<int:n>')
def even(n):
    return 'even' if n % 2 == 0 else 'odd'
```
7
- ⁠asked me to write a sqlalchemy query to return all the names starting from m (these 3 were iin notepad)

Times asked 1
Official solution

SimpleSQLAlchemy MAD1 ka common ORM. Flask-SQLAlchemy wrapper se db.Model, db.session.
Example
```
user = User(email='a@b.com')
db.session.add(user)
db.session.commit()
users = User.query.filter_by(role='admin').all()
```
8
- asked the significance of if __name__==__main__ line in app.py

Times asked 1
Official solution

Simple
```
if __name__=='__main__' only when file run directly. Import pe nahi — app.run yahi. Remove import pe server start ho sakta.
```
Celery/tests import app without serving. Why used.
Flask Python micro web framework. Route decorator URL → function. MAD2 mein JSON API: request.get_json(), jsonify, JWT.
WSGI: server (Werkzeug) app ko call. if __name__ == '__main__' sirf direct run. Factory create_app() test/celery ke liye.
Blueprint/resources folders. @app.route vs MethodView. Debug=True viva local, prod nahi. CORS alag port Vue ke liye.
Project example: app.py bottom.

Advice: very very considerate cool person, just let him know that you know stuff. he is there to accept everything with calm. he calmed down my nervousness so yes also trust what your peers send in the grp...i got almost same qs that were asked that very day in prev shifts

See reviews Level2_127 MAD1 Level 2

Aug 16, 2026

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1

-Demonstrate your project

Times asked 1

Official solution

SimpleDemo script pehle se practice: 5–7 min, Admin + User roles, saare mandatory features.
Suggested flow1) Register/login user
2) Admin login — CRUD
3) Approval/blacklist
4) Booking/apply + edge case
5) Search
6) Logout
Viva tipBolte-bolte dikhao. Code tab kholna jab poochhein.
2

-Asked me if I made a function that no 2 patients can book the same slot

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
3
-Asked me to write password column in users table with string len of 200 and unique=true

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
4

-Asked me where to show where I have used for loop in html

Times asked 1

Official solution

SimpleDemo script pehle se practice: 5–7 min, Admin + User roles, saare mandatory features.
Suggested flow1) Register/login user
2) Admin login — CRUD
3) Approval/blacklist
4) Booking/apply + edge case
5) Search
6) Logout
Viva tipBolte-bolte dikhao. Code tab kholna jab poochhein.
5
-Asked me to if I have prepared any charts and stuff..which I didn't

Times asked 1
Official solution

SimpleCounts API, bar/pie, booking ke baad number badle.
2 colors live task common.
Examiner 2 cheezein: simple desi line + tumhare project ki exact file.
Pehle ID, GitHub, portal ZIP. Phir run: Redis + Flask + worker + beat + Vue. Feature demo: login, RBAC, cache hit/miss, Celery mail, search.
Line pe ungli: input kahan, kaunsa check, query/cache/task, JSON/UI. Copilot band. Jo nahi kiya honestly bolo + kaise add karte.
Example
```
new Chart(ctx, {
  type: 'bar',
  data: { labels: ['Jan','Feb'], datasets: [{ data: [12, 19], backgroundColor: ['#36a','#f80'] }] }
})
```
Project example: Admin dashboard.
Viva tipBooking karke chart update dikhao. Examiner 2 colors maange to backgroundColor array chhota kar do.
6
-Asked me give info of each column in Doctor table

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.

Advice: Proctor is very chill...you will be lucky if you get him as your proctor...Remember to ask for feedback

See reviews Level1_103 MAD1 Level 1

Aug 16, 2026

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1

Explain one route.

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
2
What is jinja?

Times asked 1
Official solution

SimpleJinja2 Flask ka template engine — HTML ke andar {{ }} variables, {% %} logic.
Example
```
{% for lot in lots %}
  <li>{{ lot.name }} — {{ lot.spots }}</li>
{% else %}
  <p>No lots</p>
{% endfor %}
```
3
And check each and every functionality.

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.

Advice: Proctor was very polite.

See reviews Level2_142 MAD1 Level 2

Aug 16, 2026

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1

Same questions that students have mentioned earlier in this sheet

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.

Advice: You gotta be prepared for some heavy theoretical questions

See reviews Level3_24 MAD1 Level 3

Aug 16, 2026

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1

Q&A

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
2
No live code changes for me.

Times asked 1
Official solution

Yeh MAD-1 viva question tumhare project ke context se linked hai. Short answer is structure se do:
Pehle 1 line definition/purpose, phir tumhare project ka example, phir chhota code/flow.
Typical Flask flowBrowser request → @app.route controller → SQLAlchemy model/DB → Jinja template response.
Auth: session['user_id'] + role check. CRUD: add/commit, query.all, field update, delete.
Live change maange to: related model → route → template, phir browser refresh karke dikhao.
Example (generic create):
obj = Model(name=request.form.get('name'))
```
db.session.add(obj); db.session.commit()
return redirect(url_for('list_view'))
```

Advice: 1. Follow this sheet for your particular proctor. 2. Proctor might not speak for the entire duration of your demonstration and code explanation. He will just instruct you. 3. Practice explaining your code and take as much time as you can for that during the viva. Best of luck!👍

See reviews Level3_24 MAD1 Level 3

Aug 16, 2026

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1

viva went on for 40 minutes

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.

Advice: go through the previously asked questions of these proctors and its quite enough. you need to know everything about your code.

See reviews Level3_25 MAD1 Level 3

Aug 16, 2026

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1
explain data base table relationships, attributes , foreign and primary keys

Times asked 1
Official solution

Simpledb.relationship se object graph: lot.spots, booking.user. backref reverse side auto deta hai.
Example
```
spots = db.relationship('Spot', backref='lot', cascade='all, delete-orphan')
```
2

explain charts u put in project

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
3

and some other questions with he asked priviously

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.

Advice: go throught the previouly asked questions of these proctor and its quite enough

See reviews Level3_42 MAD1 Level 3

Aug 16, 2026

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1

Viva 2 Asked me to show the ID card first and then asked me to download the code from the website and run it Then showed the demo, the proctor asked for some functionalities mainly CRUD and some edge test cases. Was asking a lot of questions as I was giving the demo like(Also I was explaining some of the things while I explaining the demo alongside code)

Times asked 1

Official solution

SimpleCamera pe clearly college/IITM ID dikhao — naam aur photo match hone chahiye.
Viva tipPehle se ID haath mein rakho, glare mat aane do. Iske baad GitHub + project run.
2
model part of your code - relationship between tables, cascading

Times asked 1
Official solution

Simpledb.relationship se object graph: lot.spots, booking.user. backref reverse side auto deta hai.
Example
```
spots = db.relationship('Spot', backref='lot', cascade='all, delete-orphan')
```
3

Frameworks used

Times asked 3

Official solution

SimpleStack bolo: Python, Flask, Jinja2, SQLAlchemy, SQLite, HTML/CSS/Bootstrap, maybe Chart.js.
4

CSS and bootstrapping

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
5
creating a route for a new page which displays the occupied spots in a particular lot

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
6
JavaScript ( I have used some) - asked about DOM

Times asked 1
Official solution

SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.
Suggested flow1) Concept kya hai?
2) Mere code mein kahan?
3) Example / demo
4) Edge case
Example
```
# related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect
```
Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.
7

how do you scale your application ( scale up Vs scale down)

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.

Advice: Be practical with your code, cover edge cases and if you hadn't done them, mention them beforehand itself

See reviews Level1_119 MAD1 Level 1

Aug 16, 2026

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1
first checksum then run the app (no demo) and just after that a coding problem where he asked ##"(you have to create a form from scratch take user name as input and have a dropdown in the form itself where you have to show the option to select all the lots which are available in the database (updated dynamically)and a search button ,On seach you have to fetch the data of all the spots which are booked by that user on the selected lot)"## also asked for some models.py AND routes explaination Its not all but this is what i can remember

Times asked 1
Official solution

Simplevenv activate → dependencies → DB create/migrate → flask run. Browser pe localhost dikhao.
Example
```
python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
flask run
```
2

What is usermixin and why use it in Db

Times asked 1

Official solution

SimpleUserMixin RoleMixin Flask-Security interfaces: is_authenticated, roles relation.
Methods milte. Models inherit.
Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).
4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.
Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.
Project example: class User(db.Model, UserMixin).
3

Explain your __init__ file (basically app setup)

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
4

Difference in cell pading and spacing

Times asked 1

Official solution

SimpleMAD1 typical: Browser → Flask routes → validate/auth → SQLAlchemy → SQLite → Jinja response.
Suggested flowRequest → Route → Auth check → DB → render_template / redirect
5

What is VCs and can you give an example

Times asked 1

Official solution

SimpleGit version control: commit history dikhao. VCS = Version Control System.
6
What will happen if your remove secret key ,which features will be effected on on app

Times asked 1
Official solution

SimpleLive UI change: relevant CSS/HTML template kholo — color, margin, flex, bootstrap class. Save + hard refresh.
Example
```
/* button red */
.btn-primary { background: red; }

/* center navbar item */
.navbar { justify-content: center; }
```
Viva tipDevTools se pehle try, phir file mein permanent change.

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