Lazy IITians – Viva Prep

See reviews LEVEL1_VIVA33 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1
Explain your project , models.py, what is flask, Jinja, Authentication vs Authorization. CODING changes - Make button color green, create route to search approved companies.

Times asked 1
Official solution

SimpleAuthentication: tu kaun hai? (login). Authorization: tujhe permission hai? (role check).
Example
```
# auth
if check_password_hash(user.password, pwd):
    session['user_id'] = user.id

# authz
if user.role != 'admin':
    abort(403)
```

Advice: Proctor was polite. Gives u time to answer .

See reviews Level3_42 MAD1 Level 3

Aug 16, 2026

Download all Download all

Copy set link

1

After that as I created a new student so he asked me to go on to the registration page back and asked me to add the same email, username which I just created for the previous question so I did that but could not be able to take that registration as I defined unique username and email so it gave a flash (user exists)so he said ok

Times asked 1

Official solution

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

Then he asked me to go to the company dashboard again and asked to see in the application section of that drive to view if that students application is there or not.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
3

Then he asked that in that table in company_dashboard where I stored the ongoing drive details, add another column for the No. Of Application for each drives I started but forget how to count the application so he asked first of to use Google for syntax but I was trying so he told to use( | length) the. It worked.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
4
Then he asked to go to code and explain how I connected my flask app to database so I showed all the steps

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
Then he asked to explain Authorization and Authentication in my code

Times asked 1
Official solution

SimpleAuthentication: tu kaun hai? (login). Authorization: tujhe permission hai? (role check).
Example
```
# auth
if check_password_hash(user.password, pwd):
    session['user_id'] = user.id

# authz
if user.role != 'admin':
    abort(403)
```
6
Then he asked from the login route, what is the http method when we are displaying the flash message

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'))
```
7
Then he asked go to any other route for authorisation I used manually checking like for each route(if user_email is in session and whether the role is assigned to access the page details) for this he asked whether we can replace it with any simpler alternative I told for this we can use the flask-login and using decorator function @login-required then he said ok

Times asked 1
Official solution

Simplelogin_required jaisa decorator protected routes pe: session nahi to login redirect.
Example
```
def login_required(fn):
    @wraps(fn)
    def wrapper(*a, **k):
        if 'user_id' not in session:
            return redirect(url_for('auth.login'))
        return fn(*a, **k)
    return wrapper
```
8
Then he asked difference between POST, PUT, PATCH

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.
9

Then he asked whether I used bootstrap I said yes then he asked how so I showed the link which I used in base.html

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
10

He asked what is bootstrap why I used this

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
11

Then he asked as I have used the link so if there is weak internet or not internet connection so still this bootstrap will work or not, app will work or not. I said yes but then he said are you sure so I said I didn't tried it yet so he said ok

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
12

Then he asked go to company_dashboard on browser -> create drive option and he asked if I want to add another field for location or any other field so what will happen to other previously created drives

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.
13

Then he asked have you heard of catching I said no

Times asked 1

Official solution

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

Advice: He was kind and friendly. He was mainly interested in knowing whether the student has completed the project independently and know their own project whatever they have used and if used the AI or some tool so just know what you are using and what that line of code is doing.

See reviews APPDEV_LEVEL1_VIVA2@STUDY.IITM.AC.IN MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1

Give a brief demonstration of 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
After I explained he asked to go back again to student_dashboard and asked to align the flash message to center as it was on the top-left so I did that.

Times asked 2
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
After this in navbar I used the links and Pipe symbol instead of buttons for [Profile | Edit Profile | Logout] so he asked to change these links into a buttons so I did that.

Times asked 2
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.
4
Then he asked me to go on database file, I thought he is asking for database.py (but it was models.py ) so he asked me from database.py only that what is the use of this file, why I used ORM ?

Times asked 2
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
```
5
Then he asked http methods for CRUD operations but I thought he is asking me to explain what are CRUD operations so I started but then he said methods so I explained the GET, POST, PUT, DELETE then he asked have you heard of PATCH then I explained it then he said ok, Thank you, That's all from my side

Times asked 1
Official solution

SimpleGET data read/show karta hai (idempotent). POST create/submit karta hai (form).
Example
```
@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        # validate + session
        ...
    return render_template('login.html')
```

Advice: Very kind proctor, tries to be humble and friendly with students so that we can answer correctly. Don't get nervous take your time and explain everything, he listens everything patiently.

See reviews Level2_79 MAD1 Level 2

Aug 16, 2026

Download all Download all

Copy set link

1

Project demo

Times asked 7

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
In the company dashboard can you change drive name after posting it

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.
3
Can student change the resume that they have submitted after applying for a job

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.
4

Coding question - take input from a form and display it in another page

Times asked 1

Official solution

SimpleLive coding: notepad/editor mein chhota Flask route / Jinja loop / model field. Calm raho, run karke dikhao.
5

Tier 2 vs tier 3 (I explained all 3)

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.
6
Then he asked me to open my code

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
Models page

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)
```
8
He asked me what is cascade

Times asked 1
Official solution

SimpleCascade parent delete pe children pe kya ho: delete-orphan related rows hata deta hai.
Example
```
db.relationship('Spot', cascade='all, delete-orphan')
```
Viva tipParking lot delete → uske spots/bookings policy clear bolo.
9
Can it be used only for deleting

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
Why can't it be used for anything else

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.
11

Have you normalized the data

Times asked 1

Official solution

SimpleNormalisation: redundant data kam, tables todna. 1NF atomic, 2NF partial dep hatao, 3NF transitive dep hatao.
Viva tip
Exampleuser address alag table vs har booking mein dubara store.
12

How much have you normalized

Times asked 1

Official solution

SimpleNormalisation: redundant data kam, tables todna. 1NF atomic, 2NF partial dep hatao, 3NF transitive dep hatao.
Viva tip
Exampleuser address alag table vs har booking mein dubara store.
13
Why not other normal forms

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
```

Advice: Chill examiner. Do the Coding well.

See reviews level1_viva24 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1
▪︎ see collaboration on git

Times asked 1
Official solution

SimpleGitHub repo open karo: commits, collaborators, README. Examiner check karta hai tumne khud kaam kiya.
Example
```
Settings → Collaborators
Commits: regular messages, last-day dump nahi.
```
Viva tipPrivate repo access pehle de do. Main branch submitted ZIP se match honi chahiye.
2
▪︎ asked to download and run, register as company and student , create drives , apply for the drive and accept student drive and

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
```
3
▪︎ asked to write a route ,which fetche all blocked drives

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'
```
4
▪︎Asked to write jija2 code which displays job titles, and job description

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'
```
5

▪︎ MVC

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.
6
▪︎ difference between url_for , redirect ,render_template

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)
```

See reviews Level1_150 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1

1.asked for checksum 2.asked to install extension sql viewer to watch database 3.pointed out all mistakes I did and features I missed for straight 45 mins (can't say I had pleasant time)

Times asked 1

Official solution

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

Asked some questions on entity mapping 5.asked what is got and what is vcs

Times asked 1

Official solution

SimpleGit version control: commit history dikhao. VCS = Version Control System.

Advice: He is more dynamic with his questions and asks them accordingly to try and heavy drill your weak spots all in all bad experience :( unsure about passing

See reviews UNKNOWN MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1

MAD-2 LEVEL 2

Times asked 1

Official solution

SimpleLevel = viva difficulty band. Level 1 usually demo + basics; higher pe live coding + deeper theory.
Viva tipJo level assign hai uske hisaab se demo + theory ready rakho.
2

Explain your folder structure

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
What is vuex store

Times asked 1
Official solution

SimpleVuex/Pinia ghar ka notice board. Har room (component) same user/token dekhe.
State data, mutations sync change, actions async API phir commit.
Local data() sirf us component. Token/user global.
Pinia Vue 3 official, kam boilerplate. Vuex older MAD2 still common.
Example
```
state: { user: null }
mutations: { setUser(s, u) { s.user = u } }
actions: { async login({ commit }, form) {
  const u = await api.login(form); commit('setUser', u)
}}
```
Project example: store user + token login action. Navbar getters isAdmin. Logout clear LS+state.
Viva tipLocal/Session storage persist ke liye, reactive share ke liye store. Pinia Vue 3 official, Vuex older.
4
What is createrouter where we have all the routes.

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
What is createwebhashhistory

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
Why is createrouter in the bottom and not in the top

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
What is state

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

What is server event and web hooks

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
9
What is session, where is server 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().
10
What do you use to implement 1-1 and 1-many relationship

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')
```
11

What is the status code for unauthorised

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.
12

Then he asked me to show it in the terminal, which is simply going to the app, and try accessing the users with the url without giving the credentials. But I was just very much flabbergasted by the questions because I did not expect the questions to be like this and prepared for something like make changes over here and show me how will you implement this. It was very different than expected. My viva got over in just 30 min.

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.

See reviews Level3_11 MAD1 Level 3

Aug 16, 2026

Download all Download all

Copy set link

1

Honestly, this was probably the chillest guy you can ever get. Very calm, very predictable, and the whole vibe was super relaxed.

Times asked 1

Official solution

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

As always… he came around 15 minutes late 😭

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
3

He began with the project demo and asked for simple demonstration of the basic functionalities. Nothing tricky, just normal flow of the project and explanation.

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.
4

None.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
5
Literally no code changes, no “write this route,” no debugging, nothing.

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'
```
6
And the funny part is I was prepared like crazy. IT IS WHAT IT IS 🤷‍♂️

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: CHILL KARO

Viva Prep

Who are we?

Find questions

Question sets

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers

No community answers yet

My solution

Community answers