Search – Lazy IITians Viva Prep

Aug 16, 2026

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1

Level 2 viva :

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

- Asked me to set up my camera, download project, checked id card as well and asked me to run my app

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.
3

- started with the demo but he himself started mentioning what he wants to see further so went with that, He majorly checked creating doctors and booking appointments giving availablity etc.

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
- asked a bit about models like why have I used orm, why user mixin, just basic questions over random code he could see

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
```
5
- same for routes, he specifically asked for doctor delete route and asked me to make a change so that if a doctor has upcoming appointment, admin gets a warning message

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
- in models, asked for relationship between appointments, doctor and patient

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')
```
7
- also asked why did I have extensions.py (i was getting a circular import problem in my models.py and app.py that's why I had that so I explained the same)

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: The proctor is really calm and nice, he just focuses on the project and ask relevant questions, doesn't go for theory much. The proctor really just wants to check if the student is clear with the basics of app, for the rest he does help with writing code, i was nervous while editing the code so he did explain me what I should be doing and why is it necessary so it was really nice of him, so yes just be thorough with your basics and code that's enough to convince him, my viva ended in like 30 mins where the first 10 mins was all about setting up mobile, downloading app etc.

See reviews Level3_47 MAD1 Level 3

Aug 16, 2026

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1
Started off by instructing me to setup my environment and installing requirements.

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

Identify MVC in my app - which moved on to explain it by doing some action, like registering or adding a dept. or doctor. So, i described the MVC framework in action, going back and forth to code and browser.

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.
3
Code Change. Asked me to add an address field, in doctor's registration. So I had to add a new column in doctor's model for the database, a new form field, pass it on the route, and finally in the html. I had some jinja exceptions, which I quickly fixed but he never rushed me through.

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 %}
```
4
Another Code Change had to do with changing minor text colors, what bootstrap class I'm using for that etc. __No more code changes__ For theory questions, I had to describe my database relationship in detail. I described I used "Usefield=False" for One-One relations, why i used "back_populate" instead of "back_ref"(He never asked me this, but I explained for clarity sakes and to dodge any further questions. Some explanation for keywords like, "redirect", "url_for", HTTP methods, "CSRF"(which I couldn't explain, I only knew this is used for security).

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')
```

Advice: The proctor is very calm and gives you enough time to explain your thought process, kind of trusts you to speak for yourself rather than rapid fire questions. Please practice minor code changes, and learn about keywords, terminologies associated with the whole Flask based system.

See reviews Level2_126 MAD1 Level 2

Aug 16, 2026

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1

viva2:

Times asked 1

Official solution

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

asked me to show the demo

Times asked 2

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

while i was explaining he asked a lot of theory ques, and mostly he asks repeated ques. i focused on the ques present in this this sheet for my preparation and almost all the ques matched

Times asked 1

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
4

to close the flash mssgs i used a bit of JS, so he asked ab that. i didnt know what to say cuz i literally took it from google. and he said ok no issues just explain ab what it does so i did that

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.
5

for code changes he asked to set an age limit such that patients under the age of 18 cant register (lol i saw this in the sheet b4 too)

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.
6

asked me to explain admin functionality and then he asked me to write a raw sql query in notepad for the same

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
7
he also asked me to provide slots as a doctor, told me to provide 2 slots at the exact same time and date.

Times asked 1
Official solution

SimpleEdge cases: duplicate booking, full capacity, wrong role URL, empty search, invalid id.
Example
```
if Spot.query.get_or_404(spot_id).status != 'available':
    flash('Already taken')
    return redirect(...)
```

Advice: proctor is friendly and patient. if u get him just focus on the ques present in the sheet already becuz almost all of the ques are repeated. i booked for 9-10pm slot and my viva lasted around 30 mins

See reviews MAD1LEVEL1THISNISMASKEDNOW MAD1 Level 1

Aug 16, 2026

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1

Full demo of 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

Model is normalised or not. What are 3nf, 2nf, 1nf forms.

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.
3

Wht is difference between 3 tier and 2 tier architecture.

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
4

What is MVC ? How it's used in the code.

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
Write code to take a input from a page and display it into another page.

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'
```

Advice: Id's are masked, so can't use specific questions. Good luck

See reviews Level2_127 MAD1 Level 2

Aug 16, 2026

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1

Different request methods

Times asked 1

Official solution

SimpleHTTP methods batate hain request kya karna chahti hai. Common: GET POST PUT PATCH DELETE.
GETread/fetch. Safe, URL se. Page kholna, search.
POSTcreate/submit. Form, login.
PUTpoora replace/update. Idempotent.
PATCHpartial update.
DELETEhataana.
HEAD: sirf headers. OPTIONS: CORS preflight.
Flask: @app.route('/x', methods=['GET','POST'])
Agar methods na likho to default sirf GET.
HTML form native sirf GET/POST. PUT/DELETE JS/fetch ya hidden _method se.
GET se data fetch ho sakta hai, create nahi karna chahiye. POST se theoretically fetch ho sakta hai lekin cache/semantics galat.
DELETE fetch ke liye nahi. GET POST ka kaam officially nahi karta — side effects GET pe mat rakho.
2
GET vs POST

Times asked 2
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')
```
3
open notepad, n write if loop 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 %}
```
4

Proctor level2_127

Times asked 1

Official solution

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

Advice: proctor is chill

See reviews Level3_45 MAD1 Level 3

Aug 16, 2026

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1
She asks lot of questions once you answered. Please make sure, you practice the questions that is already present in this sheet. for all proctor. make sure you properly understand the questions and concept. if you impress her with your theorical questions, she is very chill. she asked me to open simple txt file and give three simple tasks, one related to jinja for loop, one is jinja if loop, one is give simple route for square of a number. then for code questions you need to make sure whatever it is there you understand clearly. More focus on your routes, models and all basic html, css things. she asked me to change the doctor name with doctor name - specilization. then simple simple filtering questions. if you tried hard, to do, and if she felt you are tring hard, she will also help you if you stuck inbetween. Overall, she is very good proctor, if you perform well, she will chill, otherwise she will roast you both sides. be careful. happy leaning!

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: She obessed with css z index idk why, then routes and models, jinja templates, simple simple code changes, very good proctor, very motivative, kind, strict all in one. lol

See reviews Level3_42 MAD1 Level 3

Aug 16, 2026

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1

demo(has asked do this try this and this means he check s the functionality in the demo only he wants)

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

then asked about the route he pointed out the line number to explain its usage

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

how database is created how it is connected to your app

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
asked about relationships

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')
```
5
how you implemented authorization in 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

Bootstrap how used and why

Times asked 1

Official solution

SimpleBootstrap CSS framework — grid, navbar, buttons jaldi. CDN ya downloaded files.
7

scaling(not directly but with scenario what if multiple user try to your app)

Times asked 1

Official solution

SimpleLoad badhe to handle: scale up/out, cache, async, DB tune.
SQL scale: indexes, pool, replicas, partition, cache hot queries.
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: If 10k: URI postgres, gunicorn, cache, celery concurrency.
8

code written

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
9
on doctors registration page add confirm password then validate in route

Times asked 1
Official solution

SimpleValidation = input rules: required, email format, length, unique. Frontend UX, backend security — dono.
Example
```
if not email or '@' not in email:
    flash('Invalid email')
    return redirect(request.url)
if User.query.filter_by(email=email).first():
    flash('Email taken')
```
10
give scenario what and how you handle the situation if we want to add city to the doctor field how you would approach

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: keep calm he also helped you in code if you stuck just go through the question get ready to face practical questions instead of direct theory questions

See reviews Level3_11 MAD1 Level 3

Aug 16, 2026

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1

Asked for IIT-M ID

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
Asked me to run the project using the downloaded file. (Venv creation, requirements installation, everything one needs to do)

Times asked 1
Official solution

SimpleVirtualenv isolated Python env — project deps system Python ko nahi bigaadte.
Example
```
python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
```
3

Goes through the project step by step same as level 1.

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.
4

Gives suggestions for improvements in the project.

Times asked 1

Official solution

SimpleImprove ideas: caching, better validation, tests, pagination, email reminders, accessibility, mobile UI, logging.
Viva tip1-2 concrete features bolo jo time milne pe add karte — vague 'AI' mat.
5

Said he was done with the assessment and asked whether I have any questions or not. I asked how I did on the viva. He said I just need to implement the suggestions he gave to make this a full fledged working example.

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
6
Did not ask to do any code changes.

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'
```

Advice: Prep well according to what your proctor has asked in the past.

See reviews Level3_43 MAD1 Level 3

Aug 16, 2026

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1

Said to do demo of application and then basically asked-

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
Describe your database design

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
Describe how your authentication works

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)
```
4

And asked a schema qstn,that's it

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
5

Literally

Times asked 1

Official solution

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

Advice: Very chill proctor,aakshay is his name,he was great,didn't asked me any code exchange.he asked almost same qs like previous sheet,do check them,all is repeated.He even gave me feedback,great guy.You're lucky if u get him.Best of luck bro!

See reviews Level1_129 MAD1 Level 1

Aug 16, 2026

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1

came about 10 minutes late

Times asked 1

Official solution

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

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 me if I had already downloaded the codebase and I had so he asked for checksum

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 add experience column for doctors and show on patient side (had to delete db for this so I lost the example values i had created for demonstration)

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
on theory question, what is cascade all delete

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.
6

by then it was pretty late so he just asked me if all the functionalities were present, no 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.

Advice: the 'add experience column' coding question seems to be very common with him so certainly do practice that, he also repeats his questions so go through the same questions of his in this spreadsheet and youll do just fine, you got this!

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