Lazy IITians – Viva Prep

See reviews APPDEV_LEVEL1_VIVA1 MAD1 Level 1

Aug 14, 2026

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1

same as previous questions in the sheet (for level 1)

Times asked 2

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.

Advice: know your project well that will be enough

See reviews Level1_91 MAD1 Level 1

Aug 14, 2026

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1

Asked to show the functionalities of the app and guided through out.

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.
2
Asked questions on redis, celery

Times asked 2
Official solution

SimpleRedis box hai, Celery us box se kaam uthane wala worker hai — same cheez nahi.
Redis: store (cache keys) + queue (broker lists).
Celery: Python library jo tasks define karti hai, .delay() se queue mein daalti hai, worker execute karta hai.
Dono localhost pe ho sakte hain. Alag Redis DB index use karo. Redis band = cache miss + Celery stuck.
Example
```
Celery: broker_url='redis://localhost:6379/0'
Cache:  CACHE_REDIS_URL='redis://localhost:6379/1'
```
Project example: export_csv.delay(user_id) Flask se. Worker Redis se task uthata hai, CSV+email. Cache alag keys venues.
Viva tipAgar possible ho to cache db=1, broker db=0 — keys mix nahi hoti.
3
SQAlchemy injection 7)Asked to change button Background.

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.

Advice: He is very supportive, will wait patiently for everything and will guide you when u need.

See reviews Appdev_level1_viva5 MAD1 Level 1

Aug 14, 2026

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1
- changing email remainder and monthly report for time=30 seconds...(when i practiced day before it worked but at time didn't, i was so confused also when the viva completed i tried to run again and it worked i was very nervous).

Times asked 2
Official solution

SimpleLive jobs: Redis, worker, beat, crontab abhi, logs + email/CSV.
Scheduled vs user-triggered dono dikhao. Missing feature honestly.
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.
Suggested flow1) redis
2) worker
3) beat
4) crontab now
5) logs + MailHog
Example
```
CELERY_BEAT_SCHEDULE = {
  'daily-reminder': {
    'task': 'jobs.daily_reminder',
    'schedule': crontab(hour=18, minute=0),
  },
}
```
Project example: Change schedule current time. MailHog. Export button 202.
2

-in admin dashboard show list of only confirmed booking treks

Times asked 2

Official solution

SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).
Viva tip1 minute elevator pitch ready rakho, phir demo.
3
- Props (i don't know that we call navbar and footer inheritance this also i was so much nervous that my ears started burning )

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
- CSS change = hover

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.

Advice: He's not rude as mentioned in other reviews and also patiently waited when i was not getting the list of only confirmed booking(in first try) because I was also nervous but i recommend be confident and know your code

See reviews LEVEL1_VIVA1 MAD1 Level 1

Aug 14, 2026

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1
Create Test page at navbar in admin part , (make sure it is visible in the website , BOTH FRONTEND+BACKEND)

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.
2
Cache

Times asked 2
Official solution

SimpleCache = pehli baar hisaab karke copy rakh lo, doosri baar copy dikha do.
Baar-baar same expensive kaam (DB query, counting bookings) mat karo. Result Redis jaise store mein timeout ke saath rakh do.
Cache hit: key mil gayi, DB skip. Cache miss: DB se lao, SET karo, return karo.
Tradeoff: speed vs stale data. Admin naya venue add kare aur cache 50s ka ho to user purani list dekh sakta hai — isliye write pe invalidation zaroori hai.
Browser cache, Flask-Caching, Redis alag layers hain. MAD2 examiner Redis + @cache.cached code dekhta hai.
Example
```
@cache.cached(timeout=50, query_string=True)
@app.route('/api/shows')
def shows():
    return jsonify([s.serialize() for s in Show.query.all()])
```
Project example: Admin dashboard counts / venues list cache. Create/update/delete ke baad cache.delete('venues').
Viva tipprint('DB queried') function ke andar laga ke miss/hit demo karo — hit pe print nahi chalega.
3
Celery Output

Times asked 2
Official solution

SimpleCelery = background naukri. HTTP request ko 10 second email bhejne ke liye mat rokna.
Distributed task queue: aap function ko abhi nahi, worker process mein later/retry/schedule pe chalaate ho.
MAD2 typical jobs: daily reminder mail, monthly HTML report, user-triggered CSV export.
Web request 200ms hona chahiye. 10,000 emails request thread mein = timeout. Worker alag CPU pe kaam kare.
Redis broker chahiye. Beat alag process schedule ke liye.
Example
```
@celery.task
def daily_reminder():
    for u in User.query.filter_by(active=True):
        send_mail(u.email, 'Book something today!')
```
Project example: User Export click → 202 Accepted. Worker CSV + email. Daily 6pm Beat reminder.
Viva tipWorker + Redis bina Beat ke user-triggered chalega. Scheduled jobs ke liye Beat bhi chahiye.

Advice: He gives time for code part , helpful

See reviews appdev_level1_viva30 MAD1 Level 1

Aug 14, 2026

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1

#viva 1 - Trekking app

Times asked 2

Official solution

SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).
Viva tip1 minute elevator pitch ready rakho, phir demo.
2
- Asked for ID card and GitHub collaborator proof

Times asked 2
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 for a demo of the application

Times asked 4

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 about daily and monthly scheduler beat to run it now and check if the mail came(my project i used mail)

Times asked 2

Official solution

SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).
Viva tip1 minute elevator pitch ready rakho, phir demo.
5

- Asked what is prop

Times asked 2

Official solution

SimpleComponent = reusable UI piece (navbar, card, form). Props in, events out. Vue SFC ya Jinja macros/includes.
Viva tipParent-child: props down, emit/$emit up.
6
-Asked and corrected the mistakes i made in model

Times asked 2
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 was chill and didn't interrupt much explained me the mistake i made in the model and was mostly patient and quiet

See reviews Level1_91 MAD1 Level 1

Aug 14, 2026

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1

*Asked me to show my ID card.

Times asked 2

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
* Checked my GitHub repository.

Times asked 2
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 to run the project and demonstrate the complete company flow:

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.
4
* Company registration

Times asked 2
Official solution

SimpleRegistration: form → validate unique email → hash password → db.session.add/commit → redirect login.
Example
```
if User.query.filter_by(email=email).first():
    flash('Taken')
else:
    db.session.add(User(email=email, password=generate_password_hash(pwd)))
    db.session.commit()
```
5

* Admin approval

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

* Company login

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.
7

* Create a drive

Times asked 1

Official solution

SimpleCRUD = Create Read Update Delete. Admin pe ek resource ke 4 ops dikhao.
8

* Student applies for the drive

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.
9

* Asked whether I had used *Redis* and *Celery. I started the Worker and Beat and demonstrated the **Daily Reminder* and *Monthly Report* tasks.

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.
10
* Finally, he asked me to write an API to fetch all blacklisted users.

Times asked 2
Official solution

SimpleNaya Flask route: URL, method, auth if needed, query, jsonify. Postman pehle.
Examiner number/filter change easy rakhna. CORS. Frontend tabhi jab bole.
Status codes sahi. Password JSON mein nahi.
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
```
@app.route('/api/sum', methods=['POST'])
def sum_num():
    d = request.get_json()
    return jsonify(result=d['a'] + d['b'])
```
Project example: resources.py new Resource. Test Thunder. Optional Vue fetch.
11

* After that, he said, "You did well. You are eligible for MAD2." and asked me to leave the Google Meet.

Times asked 2

Official solution

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

Advice: Overall,Very friendly examiner. He gave enough time to demonstrate everything and the viva felt comfortable.

See reviews APPDEV_LEVEL1_VIVA18@STUDY.IITM.AC.IN MAD1 Level 1

Aug 14, 2026

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1

1)Show Id card Github repo, download the project and run it

Times asked 2

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

2)Showed Admin Dashboard

Times asked 2

Official solution

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

3)Asked to show frontend code

Times asked 2

Official solution

SimpleCode dikhao to pehle related file: models → route → template. Flow explain karte hue lines padho.
4
4)asked cdn vs cli

Times asked 2
Official solution

SimpleCDN = Vue script tag se, jaise pen drive. CLI/Vite = poori factory (SFC, npm, bundle).
CDN: no build, chhote apps, exam PC pe Node nahi to bhi chal. Weak: no .vue compile, 3rd-party cache, scale/team.
CLI/Vite: Single File Components, env, code-split, production dist/. Scalable.
Examiner 'which + why' — jo use kiya wahi justify, doosra naam rato mat.
Example
```

<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>

# Vite
npm run dev
npm run build
```
Project example: CDN: index.html unpkg vue. CLI: package.json, npm run serve / vite.
Viva tipCDN scalable large teams ke liye weak (no SFC compile, caching 3rd party). Examiner 'which + why' poochta hai — jo use kiya wahi justify karo.
5
5)asked to write frontend and backend route for showing completed treks in notepad

Times asked 2
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
6)asked to explain about models and relationships in them

Times asked 2
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
7)Asked about rabc jwt implementation and module used for it

Times asked 2
Official solution

SimpleJWT teen tukde ki signed chitthi: header.payload.signature. Padhi ja sakti hai, badli nahi ja sakti.
Encoded (Base64) + signed, encrypted nahi (JWE alag). Payload mein password mat daalo — koi jwt.io pe dekh lega.
Login pe server secret se HMAC (HS256). Har API Authorization: Bearer <token>.
Expiry exp. Change payload → signature fail → 401.
Session MAD1 server yaad rakhta. JWT MAD2 client rakhta, server stateless-ish.
Example
```
eyJhbGciOiJIUzI1NiJ9.{"sub":1,"role":"admin"}.signature
# Authorization: Bearer <token>
```
Project example: POST /login → token LS. fetch interceptor header. @jwt_required APIs.
Viva tipAlgo HS256. Secret env var. jwt.io pe payload dikhao, secret public site pe mat paste.
8

8)Enough for level 1

Times asked 2

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.
9

Done

Times asked 2

Official solution

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

Advice: Very Good Proctor, Very Friendly, Prepare basic login routes and writing forntend for it based on your models.

See reviews Level1_107 MAD1 Level 1

Aug 14, 2026

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1

PRACTICE CODING QUESTION if you want to pass, he gave me d/e even though i answered a lot of questions and solved a coding

Times asked 2

Official solution

SimpleLive coding: notepad/editor mein chhota Flask route / Jinja loop / model field. Calm raho, run karke dikhao.
2
practice login route, vue component and celery task live coding

Times asked 2
Official solution

SimpleCelery = background naukri. HTTP request ko 10 second email bhejne ke liye mat rokna.
Distributed task queue: aap function ko abhi nahi, worker process mein later/retry/schedule pe chalaate ho.
MAD2 typical jobs: daily reminder mail, monthly HTML report, user-triggered CSV export.
Web request 200ms hona chahiye. 10,000 emails request thread mein = timeout. Worker alag CPU pe kaam kare.
Redis broker chahiye. Beat alag process schedule ke liye.
Example
```
@celery.task
def daily_reminder():
    for u in User.query.filter_by(active=True):
        send_mail(u.email, 'Book something today!')
```
Project example: User Export click → 202 Accepted. Worker CSV + email. Daily 6pm Beat reminder.
Viva tipWorker + Redis bina Beat ke user-triggered chalega. Scheduled jobs ke liye Beat bhi chahiye.
3
and basic theory questions backreffing, lifecycles in vue and all

Times asked 2
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')
```

Advice: he is a very uncool and bad guy, he will deliberately give you poor marks and primarily judge your code on the basis of ai written code

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