Lazy IITians – Viva Prep

Aug 16, 2026

Copy set link

1
Then, they asked me to explain the difference between 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().
2

They also asked me to write and explain the code where I used dynamic URLs.

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

After that, they checked my frontend knowledge by asking about Bootstrap and CSS. They specifically asked where I used the box-shadow property and told me to show it 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.
4

There were several more questions, and overall, my viva lasted approximately 45 minutes.

Times asked 1

Official solution

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

Advice: It was okay, I am fine with what I did to myself. Compared to the rest, this is a bit strict. But I enjoyed it.

See reviews Level3_13 MAD1 Level 3

Aug 16, 2026

Download all Download all

Copy set link

1

MVC (Model-View-Control)

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.
2

finally what are the things I've learned after all that the examiner asked, if I have any ques, to which I asked for feedback, which I felt was amazing, he ask if my app had any thing that no other app in world has, (I said no) , so next time I have to make something that sets me apart from other in market. total viva time ~45-50 mins all the best!

Times asked 1

Official solution

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

Advice: This feedback form is the best resource relax and go though the que asked in the past initially I though this would be pretty difficult, but the proctors are awesome and there are alot of repeated ques for this form All the best! also please contribute to this form once your done

See reviews Level1_93 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1

VIVA - 1 (EASY PROCTOR)

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
2
* TOLD TO SIT IN A OPEEE FASHION

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.
3

* SHE ASKED TO SHOW THE DEMO - TOOK 8 mins

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
* SHE THEN ASKED TO OPEN APP.PY AND TELL ALL THE IMPORTS IN YOUR APP.PY LIKE WHAT DOES IMPORT OS DO?

Times asked 1
Official solution

Simpleimport os — env vars, paths. SECRET_KEY = os.environ.get('SECRET_KEY'), file paths join.
Example
```
import os
basedir = os.path.abspath(os.path.dirname(__file__))
```
5
* THEN SHE SAID TO OPEN NOTEPAD AND SAID TO WRITE A ROUTE FOR PRINTING A LIST = [1,2,3,4,5] WITH RENDER_TEMPLATE

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
* THEN ASKED TO DO JINJA2 IF STATEMENT

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 %}
```
7
* THEN ASKED ABOUT ERROR CODES - WHAT DOES 500 ERROR CODE MEANS?

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'
```
8

* VIVA DONE IN 16 MINS

Times asked 1

Official solution

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

Advice: BE CHILL AND PLEASE PLEASE CHECK ALL THE VIVA QNS FROM THE FORMS, CAUSE THAT SAME ONLY THEY ASK

See reviews Level3_13 MAD1 Level 3

Aug 16, 2026

Download all Download all

Copy set link

1

What is Database and how it is implemented?

Times asked 1

Official solution

SimpleDatabase = organized data store. Example: SQLite file app.db with users, lots, bookings tables.
2

What you learned from this project? Total Viva Time Taken: 48 minutes

Times asked 1

Official solution

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

See reviews LEVEL1_VIVA20 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1

Be ready with ur bs id card

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
GitHub profile to show collaborator

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.
3

Asked to show demo

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
Checked core functionalites { he is asking one by one }

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 to change website color

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.
6

theory questions

Times asked 2

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
7
.What are decorators

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

.Diff between css and bootstrap

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
9
. what is post and put

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.

Advice: Nice proctor

See reviews Level1_103 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1
What are REST APIs? explain GET POST PUT DELETE

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')
```
2
write flask code for login route in Notepad

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
which tag is used to add signup button on login page, and to redirect to different page.

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'))
```

Advice: Go with full confidence, don't hesitate, he is really a chill guy done with viva in 15m

See reviews level1_viva30 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1

Level 1: Asked to show ID Asked to download file from portal I demonstrated everything about the project Asked to show models, explained everything about the models Later asked to show some part of code like show create drive route and some other routes Later asked to show some templates, he went through all the codes Asked questions: ORM, Template Inheritance, MVC, POST & PUT Asked to open notepad, maximize it and write code:

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
An API route to search student with student_id

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
Jinja for-loop syntax

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: Know your project and explain. Be honest!

See reviews APPDEV_LEVEL1_VIVA16 MAD1 Level 1

Aug 16, 2026

Download all Download all

Copy set link

1
then he ask to show the github repo and collab

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

then, he asked me to perform checksum or to download the project from viva portal

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
3

after this, app demo

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
whole functionalities and whole features of the web app

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
in between he was asking to change any line in code and what would be its outcome on the application

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.
6
to change the filter query in student dashboard

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.
7
to create a route for searching and statistics (just like on admin dashboard)

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()
```
8
a code of Jinja2 HTML to retrieve the data of total number of companies

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 %}
```
9

later on he came to theory part

Times asked 1

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
10
where he asked what is 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
```
11
SQL injections in 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
```
12

difference between 200, 201 message code

Times asked 1

Official solution

SimpleUngli rakhe to 4-line formula — panic ki jagah structure.
1) File ka role: model / Flask route / Vue SFC / celery task / config
2) Input kahan: JSON, params, token, props, $route
3) Kya kaam: query, cache, validation, .delay()
4) Output: jsonify, this.items, email, redirect
Unknown keyword: import, decorator, if, commit — har ka reason. Bluff mat.
Suggested flow1) Kaunsi layer?
2) Input?
3) DB/cache/task?
4) Response/UI?
Project example: Booking POST: jwt, seats check, commit, 201, Vue list push.
Viva tipUnknown keyword: import, decorator, if, commit — har ka reason. Panic mat.
13
difference between redirect_for and 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)
```

Advice: He joined 10 mins late but overall, the examiner was good he was chill and not strict he was helpful in between in some coding part and did not created any pressure he also help me in debugging some coding part and also explain me where i was going wrong

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