Lazy IITians – Viva Prep

See reviews level1_viva16 MAD1 Level 1

Aug 16, 2026

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1

•code walkthrough and demo check on all the features • why orm vs sql code • coding on routes and vue tempaltes • theory questions on mounts , life cycle hooks

Times asked 1

Official solution

SimpleLifecycle hooks = component stages (created/mounted/updated/unmounted). Data fetch usually mounted/onMounted.

Advice: -very comortable person , just presenting the code demo and answer his questions

See reviews Level3_45 MAD1 Level 3

Aug 16, 2026

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1

Theory Questions:

Times asked 2

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
2
Diff b'w url_for and redirect

Times asked 1
Official solution

Simpleredirect dusre URL pe bhejta hai. flash one-time message session mein rakh ke next page pe dikhata hai.
Example
```
flash('Login successful', 'success')
return redirect(url_for('user.dashboard'))
```
3

Explain routing

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

Relations

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
5
why we use if __name__== '__main__'

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.
6
Asked detailed explanation of models.py file

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)
```
7

Asked me to explain my project structure

Times asked 1

Official solution

SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).
Viva tip1 minute elevator pitch ready rakho, phir demo.
8

Explain <!Doctype html>

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.
9

Explain the difference between link and anchor tag

Times asked 1

Official solution

SimpleHTML structure, CSS styling. Templates mein semantic tags + classes. Responsive ke liye viewport + flex/grid/bootstrap.
10

I don't remember other questions, but most of the questions were from this excel sheet.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
11

Coding questions:

Times asked 2

Official solution

SimpleLive coding: notepad/editor mein chhota Flask route / Jinja loop / model field. Calm raho, run karke dikhao.
12
Asked me to do some changes in frontend, and asked me to write condition in jinja, and asked me to write code that automatically closes drive after the deadline passes.

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 %}
```

Advice: Be prepared to explain every single line of code you wrote. Ma'am is supportive and gives you time to think. If you are not comfortable in English then you can explain in Hindi too. Overall she is good proctor.

See reviews Level1_132 MAD1 Level 1

Aug 16, 2026

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1
Where is session data stored?

Times asked 1
Official solution

SimpleMAD1 mein usually session-based auth: login pe session['user_id'], har request pe verify.
Example
```
session['user_id'] = user.id
uid = session.get('user_id')
user = User.query.get(uid)
```
Viva tipSECRET_KEY set karo warna session insecure. logout pe session.clear().
2
difference between sql Alchemy and something I don't remember

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()
```
3

Various status code meanings randomly don't even remember all of them

Times asked 1

Official solution

SimpleStatus code server ka result: 200 OK, 302 redirect, 400 bad input, 401/403 auth, 404 not found, 500 server error.
4
Write a full HTML page to make 4 rows with switches

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.
5
He is very strict if you try to be sure about something he will say " are you asking me? "

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

he can ask you anything and everything even something that is not quiet related to your project work.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
7

Be ready to code anything he asked me to code something I hadn't implemented in my project

Times asked 1

Official solution

SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).
Viva tip1 minute elevator pitch ready rakho, phir demo.
8
He is basically there to deduct your marks

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: He is not here tp check what your project does he will not even ask for a demo he will ask bizarre theoretical questions which can be quiet unrelated to the project. He is interested in knowing what you don't know when you explain something he will interrupt and move to next question.

See reviews Level1_132 MAD1 Level 1

Aug 16, 2026

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1
1.How to apply one to one relationship in SQL alchemy - I fumbled but in the end I answered

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
2.Asked to code for the edit-profile of student

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'
```
3
3.what is the difference between redirect and render template

Times asked 1
Official solution

Simpleredirect dusre URL pe bhejta hai. flash one-time message session mein rakh ke next page pe dikhata hai.
Example
```
flash('Login successful', 'success')
return redirect(url_for('user.dashboard'))
```
4

4.what is the status code for internal server error

Times asked 1

Official solution

SimpleStatus code server ka result: 200 OK, 302 redirect, 400 bad input, 401/403 auth, 404 not found, 500 server error.
5
6.what is the session and db session

Times asked 1
Official solution

SimpleMAD1 mein usually session-based auth: login pe session['user_id'], har request pe verify.
Example
```
session['user_id'] = user.id
uid = session.get('user_id')
user = User.query.get(uid)
```
Viva tipSECRET_KEY set karo warna session insecure. logout pe session.clear().
6

That's all I remembered.

Times asked 1

Official solution

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

Advice: Mug up the theory questions . You can see the previous responses . Be prepared to code .

See reviews Level1_149 MAD1 Level 1

Aug 16, 2026

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1

MAD1 LEVEL-2

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
2
Explain the functionality of Admin-Search without seeing the code

Times asked 1
Official solution

SimpleSearch: form/query param → ilike filter → results template.
Example
```
q = request.args.get('q', '').strip()
lots = Lot.query.filter(Lot.name.ilike(f'%{q}%')).all()
```
3
Explain the model.py

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
Difference between back_populates and back_ref.

Times asked 1
Official solution

Simplebackref reverse attribute auto banata hai. back_populates dono sides explicitly naam dete ho — clearer.
Example
```
# backref
spots = db.relationship('Spot', backref='lot')
# spot.lot available

# back_populates
spots = db.relationship('Spot', back_populates='lot')
# Spot.lot = db.relationship('Lot', back_populates='spots')
```
5
Difference between cookies and session.

Times asked 1
Official solution

SimpleMAD1 mein usually session-based auth: login pe session['user_id'], har request pe verify.
Example
```
session['user_id'] = user.id
uid = session.get('user_id')
user = User.query.get(uid)
```
Viva tipSECRET_KEY set karo warna session insecure. logout pe session.clear().
6

explain the REST API and HTTP methods

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.
7

Explain login verify functionality without seeing the code.

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.
8
What is template inheritance.Have you used it?

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 %}
```
9

Add a company address field and reflect the added field on the company's profile page if you have or in admin dashboard in company's view details section. 12.Explain the db schema.

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.
10

where are you storing blacklisted field in your database

Times asked 1

Official solution

SimpleBlacklist/block: user.status='blocked' check login/booking pe. Temporary flag vs hard delete permanent.
11
how data is passed in render_template and redirect()

Times asked 1
Official solution

Simplerender_template Jinja HTML file ko data deke final HTML banata hai.
Example
```
return render_template('dashboard.html', user=user, lots=lots)
```
12

Please refer to her PYQs. She is a very kind proctor.

Times asked 1

Official solution

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

Advice: Proctor was kind and helpful. Sir was asking lots of theory questions. So, prepare well. AND have the all logic of the routes clear because you have to explain the logic without opening the app.py or any route. Sir will help you if u find any difficulties while changing the code. Didn't have any of the question from sir in this sheet for this term But I have preferred his PYQs from this sheet(only 2 entries where there).So, Hope this will help!!! All the very best!!!

See reviews Level2_126 MAD1 Level 2

Aug 16, 2026

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1

Then the theory question:-

Times asked 1

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
2

Asked to explain register HTML files and in between he popped many question (eg:- what is the use of this line)

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.
3
How we can add loops in jinja

Times asked 1
Official solution

SimpleJinja for loop list render karta hai. loop.index, else branch empty list pe.
Example
```
{% for u in users %}
  <tr><td>{{ loop.index }}</td><td>{{ u.email }}</td></tr>
{% endfor %}
```

Advice: Just be confident while explaining whatever he asked you, proctor was so calm and neutral, go well through each line of you code

See reviews Level2_132 MAD1 Level 2

Aug 16, 2026

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1

Download zip from viva portal rename it as level1viva1 and then extract

Times asked 1

Official solution

SimpleExaminer portal wala submitted ZIP chahta hai. Local extra changes mat dikhana.
Suggested flow1) Portal ZIP download
2) Extract
3) venv + pip install -r requirements.txt
4) flask run / python app.py
2
about the login logic how it works how you implement security check up

Times asked 1
Official solution

SimpleLogin flow pehle poochta hai "tu kaun hai?", token milne ke baad har API pe wohi proof dikhate ho.
Authentication step: Vue form email + password JSON POST karta hai. Flask user dhoondhta hai, check_password_hash se prove karta hai ki tum genuine ho. Galat 401. Sahi pe JWT + role milta hai — yeh session/token hai.
Vue localStorage (ya cookie) mein token rakhta hai, dashboard pe router.push. Aage ki har fetch header: Authorization: Bearer <token>. @jwt_required identity check (authentication). @roles_required('admin') permission check (authorization) — logged in ho, lekin allowed nahi to 403.
Validation alag cheez hai: empty email, password 8+ — form sahi bhara hai ya nahi. Woh identity prove nahi karta.
Logout = client token delete + login page. Server blacklist optional. Password response JSON mein kabhi mat bhejo.
Example
```
# Authentication
@app.route('/api/login', methods=['POST'])
def login():
    u = User.query.filter_by(email=data['email']).first()
    if not u or not check_password_hash(u.password, data['password']):
        return jsonify(msg='bad'), 401
    return jsonify(token=create_access_token(u.id), role=u.role)

# baad ki APIs
# Authorization: Bearer <token>
if current_user.role != 'admin':
    abort(403)
```
Project example: Login.vue POST /api/login → token LS → interceptor. Student token se admin route = 403. Empty form = validation, galat password = 401.
Viva tipNetwork tab mein password body dikhega localhost pe — prod HTTPS. Response mein hash/password echo mat karo.
3
Ask me created a new entry in registration form for age and print output in the terminal

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
```
4

Explain MVC and show how you implement it

Times asked 1

Official solution

SimpleMVC: Model=data (SQLAlchemy), View=Jinja HTML, Controller=Flask routes/business logic.
Flask loosely MVC follow karta hai — routes controllers, templates views, models.py models.
5
And some basic question related to route and models

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)
```

Advice: He is chill guy i was facing an issue in running project because of venv he gave time and guide me to install dependencies in global

See reviews LEVEL1_VIVA20 MAD1 Level 1

Aug 16, 2026

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1
Checked all the functionalities, particularly checked how I handle that student shouldn't apply twice for same drive.

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.
2

I used bootstrap, asked me to change the color of the table. (allowed me to use bootstrap docs).

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
3

Create a route which take input from the form and return that input on notepad.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
4
All http methods?

Times asked 1
Official solution

SimpleHTTP verbs REST ke tools. Methods HTTP ke hain, REST unhe convention se use karta hai.
GET read cacheable. POST create payload. PUT replace. PATCH patch. DELETE remove.
GET exists bina REST ke bhi — browser address bar.
HTTP verbs + status REST ki zabaan. GET read, POST create, PUT replace, PATCH partial, DELETE remove. GET typically no body.
Status: 200 OK, 201 created, 202 accepted (Celery task), 400 bad input, 401 no/bad token, 403 role nahi, 404 missing, 409 conflict (double book), 500 server.
AJAX/fetch page reload nahi. SPA poori isi pe. Postman se bina Vue ke API prove karo — examiner pasand.
Example
```
GET /api/venues
POST /api/venues
PUT /api/venues/1
DELETE /api/venues/1
```
Project example: resources.py methods list. Postman 4-5 calls.
Viva tipGET typically no body (cacheable). POST/PUT/PATCH haan payload. PUT idempotent, POST nahi.
5
Asked to explain some part of the code, like full student login route and how did I created search bar.

Times asked 1
Official solution

SimpleSearch: form/query param → ilike filter → results template.
Example
```
q = request.args.get('q', '').strip()
lots = Lot.query.filter(Lot.name.ilike(f'%{q}%')).all()
```

Advice: Know your code and mostly questions are from the sheet itself.

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