Search – Lazy IITians Viva Prep

Aug 14, 2026

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1

The interview lasted around 40 minutes.

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
2
The interviewer had his camera on throughout the meeting.

Times asked 2
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
He looked Tamil Black Guy.

Times asked 2
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.
4
He was kind and mostly quiet during the session.

Times asked 2
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().
5

Task 1

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
6

He asked me to implement the following rule:

Times asked 2

Official solution

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

«Once a student is placed, the student should not be able to apply to any other placement drive.»

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.
8

I completed this change in about 5 minutes. It only required a couple of lines of code.

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
9
He then gave me another requirement:

Times asked 2
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

«A student can apply to a maximum of 2 drives and can receive placements from a maximum of 2 companies, but no more than that.»

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.
11
I implemented the logic, but after making the changes, the API started throwing an error. The interviewer smiled and said:

Times asked 2
Official solution

SimpleInt column mein string daalne pe SQLAlchemy/DB type error ya Integrity/StatementError. Empty table pe bhi same validation fail — row count matter nahi.
Example
```
# SQLite may coerce sometimes; Postgres: invalid input syntax for integer
Spot(status='free', lot_id='abc')  # lot_id int → error
```
12

«"You did the last change in 2 minutes, and now you can't do this simple extra change?"»

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
13

I tried to explain my approach and the logic I had implemented, but the API issue remained unresolved during the interview.

Times asked 2

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
14

Technical Questions

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
15

After the coding tasks, he asked me a few conceptual questions:

Times asked 2

Official solution

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

Advice: Most of the call was silent, He also came late. And the theory qns are always always repeated The same 4-5 qns everytime Code qns just ask the previous person who have viva on the same day. Mostly same code qn And take time to code Or else he will give another code qn I prepared only for 1 hr And project was made by claude. Best of luck

See reviews Level2_141 MAD1 Level 2

Aug 14, 2026

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1

then asked to show the frontend files and asked about async function.

Times asked 2

Official solution

SimpleMAD1 frontend usually Jinja templates + HTML/CSS/Bootstrap (+ thoda JS). MAD2 pe Vue ho to clearly bolo.
2
Where have you used JWT? and where it stores it's data?

Times asked 2
Official solution

Simpledata() local diary. Store school notice board.
Search query local. Logged-in user store. Persist: store + localStorage together.
state vs data: similar concept, scope alag.
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
```
// local
data() { return { q: '' } }
// global
this.$store.state.user
```
Project example: Login.vue local form fields. this.$store.state.user Navbar.
3
for what v-if and v-for used for?

Times asked 2
Official solution

Simplev-if ghar se nikaal deta hai (DOM se). v-show sirf light band karta hai (display:none).
v-if false → element exist hi nahi — costly create/destroy, lekin secret HTML DOM mein nahi.
v-show → hamesha DOM, CSS hide, toggle tez.
Rare / permission UI: v-if (admin panel). Dropdown bar-bar: v-show.
: shorthand v-bind ka, v-if ka nahi.
Example
```
<div v-if="isAdmin">Admin panel</div>
<div v-show="open">Dropdown</div>
```
Project example: Admin links v-if="role==='admin'". FAQ accordion v-show="open".
Viva tipSecurity ke liye sirf v-if kaafi nahi — API 403 bhi chahiye.

Advice: He is a good guy and ask almost same question from everyone so practice questions from sheet and all the best.

See reviews Level3_24 MAD1 Level 3

Aug 14, 2026

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1

Demonstraion of Project

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

Explanation of Codes files

Times asked 2

Official solution

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

Coding Questions: changing background color.

Times asked 2

Official solution

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

Advice: In previous responses, many have written that he is rude, but that's quite wrong. His talking tone might come across that way, but in actuality, he is very helpful and calm. The proctor won't interrupt you during your demonstration or explanation of code file.

See reviews Level1_91 MAD1 Level 1

Aug 14, 2026

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1
3.Export csv and how it works

Times asked 2
Official solution

SimpleClick → Celery → worker CSV → email/download. Columns verify.
csv module. Auth required. Don't freeze UI — 202 + poll.
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
```
@celery.task
def export_venues_csv(user_id):
    rows = Venue.query.all()
    # csv.writer, mail.send
    return 'ok'
```
Project example: Admin export venues. MailHog attach ya file open.
Viva tipNetwork tab mein job trigger API dikhao, phir MailHog/file open karke columns verify karo.
2
4.Can you send daily reminders message using celery?

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.
3
6.explain handling duplicate booking

Times asked 2
Official solution

SimpleDoosri booking same slot: unique constraint + query.exists + 400 message.
Frontend disable UX. Backend source of truth. Race: two users unique(slot).
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
```
if Booking.query.filter_by(user_id=uid, slot_id=sid).first():
    return jsonify(message='Already booked'), 400
```
Project example: Click book twice. Second 400 Already booked. DB unique.
4
7.what is cascade and how do you link that to table

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.
5
9.Open notepad and write a query to book for easy treks (asked me to open models.py and asked to write query)

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: Very cool proctor and he will give suggestions then and there.

See reviews Level2_79 MAD1 Level 2

Aug 14, 2026

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1

- Show 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

- Download and run project

Times asked 2

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
- then checks collaborator on github

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.
4

- In between demonstrations he says create a button to display message api endpoint

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.
5
- then he says change the message

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.
6
- then ask lifecycle hook

Times asked 2
Official solution

SimpleLifecycle = component ki zindagi ke stages. API call tab jab DOM ready ho — mounted.
created: instance bani, this data, DOM nahi. mounted/onMounted: page pe aa gaya — fetch, Chart.js, setInterval.
updated: data change ke baad. unmounted: cleanup (clearInterval) warna memory leak.
Dashboards onMounted isliye: canvas/API tab valid. created mein $el nahi.
Composition: onMounted(() => {}) setup ke andar.
Example
```
export default {
  async mounted() {
    const r = await fetch('/api/venues')
    this.venues = await r.json()
  }
}
```
Project example: Venues.vue mounted fetch list. Clock component unmounted pe interval clear.
Viva tipcreated: data setup, DOM nahi. mounted/onMounted: $el mil gaya — fetch yahi. Dashboards isliye onMounted use karti hain.
7
- says show the caching

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.
8

- what is an asynchronous function

Times asked 2

Official solution

SimpleSync line pe ruk jao (2+2). Async I/O pe wait karte hue baaki kaam chalte (fetch, Celery).
JS async ≠ Celery async jobs. Context se bolo.
Why async jobs: slow/scheduled/bulk off request thread.
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: Login sync hash check fast. Email Celery async. Vue fetch async.
9
- v-bind , v-if , v-show

Times asked 2
Official solution

Simplev-if ghar se nikaal deta hai (DOM se). v-show sirf light band karta hai (display:none).
v-if false → element exist hi nahi — costly create/destroy, lekin secret HTML DOM mein nahi.
v-show → hamesha DOM, CSS hide, toggle tez.
Rare / permission UI: v-if (admin panel). Dropdown bar-bar: v-show.
: shorthand v-bind ka, v-if ka nahi.
Example
```
<div v-if="isAdmin">Admin panel</div>
<div v-show="open">Dropdown</div>
```
Project example: Admin links v-if="role==='admin'". FAQ accordion v-show="open".
Viva tipSecurity ke liye sirf v-if kaafi nahi — API 403 bhi chahiye.
10

- end to end demonstration of authentication

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.
11

- demonstration of all celery tasks

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.

Advice: Don’t worry too much. Even if you can’t answer one question, he will probably ask another, so you still have a chance to pass the criteria

See reviews Proctor801 MAD1 Level 1

Aug 14, 2026

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1

proctor801

Times asked 2

Official solution

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

Mad 2 Level 2

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.
3

First of all don't get demotivated or misguided by others

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
He is not rude at all

Times asked 2
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

Firstly he asked me to download the code and start server

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
6

Then the demonstration

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.
7

(Didn't interrupt me in the whole 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.
8

Then he asked me to open any js editor online

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
9

Then he pasted a json list in the chat and asked me to Filter the users who have a score greater than 15 using simple JavaScript.

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
10

const users = [

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
11
He will give you according to him

Times asked 2
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.
12

]

Times asked 3

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
13

Then it took me around 10 mins to complete because I face error

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
14
Patiently waits for me to write and run the code

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'
```
15
And I confidently did the code even I face the error 2-3 times but still I m confident enough

Times asked 2
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.
16
Because he will check your confidence

Times asked 2
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.
17

Just stay calm

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
18

And my viva ends here

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
19
Because I wrote the correct code

Times asked 2
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.
20
And then he wished me all the best and nice day !

Times asked 2
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.
21
So yeah prepare well for JavaScript

Times asked 2
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.
22
He almost asked questions about js

Times asked 2
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.
23
So prepare well and yeah don't believe on negative reviews

Times asked 2
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: If you are confident enough, he will be very nice and kind to you He really wants to check the knowledge All The Very Best!✨

See reviews Level1_130 MAD1 Level 1

Aug 14, 2026

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1

mutation vs action

Times asked 1

Official solution

SimpleMutations sync diary entry. Actions async kaam phir diary.
Direct state mutate action se Vuex 4 discouraged. Devtools time-travel mutations.
Purpose of Actions: API, phir commit. Purpose of Mutations: state change one place.
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: action fetchVenues → commit setVenues. Mutation sirf array replace.
2

write a query to fetch the jobs created by the company google

Times asked 1

Official solution

Simplefilter manager_id / company name / approved. Same Query API. Write query fetch treks/jobs/drives.
Examiner project-specific names — same pattern.
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: Drive.query.filter_by(approved=True)
3
write template and script such that user takes 2 inputs say firstname and lastname. add a button. upon clicking, it should return firstname+lastname.

Times asked 2
Official solution

SimpleVue live: two inputs v-model, button @click se first+last concat karke dikhao.
Example
```
<input v-model="first" /><input v-model="last" />
<button @click="full = first + ' ' + last">Go</button>
<p>{{ full }}</p>
```

Advice: Go through your entire code. He checks if we understand which thing is written for what.

See reviews Level3_24 MAD1 Level 3

Aug 14, 2026

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1

• ID verification.

Times asked 2

Official solution

SimpleCamera pe clearly IITM/college ID dikhao — naam photo match.
Pehle se ID haath mein rakho. Glare mat aane do. Examiner screenshot/verify karta hai. Iske baad GitHub + project run.
2

• Explained the viva process and gave permission to start.

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
3
• What is template inheritance?

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 %}
```

Advice: Very calm and supportive proctor. He first explains the complete viva process, so don't panic. Keep your project ready because he asks for a complete demo followed by a detailed code explanation. Explain your project confidently without waiting for interruptions, as he mostly listens. Know your backend code well, especially authentication, JWT, Redis, Celery, and your project flow. Revise common theory questions like browser storage, template inheritance, Flask endpoints, and authentication vs authorization. If you explain your project clearly and confidently, the viva goes very smoothly.

See reviews Level3_24 MAD1 Level 3

Aug 14, 2026

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1
Diff between cell spacing and cell padding

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

Status codes mean - 201, 301, 401, 501 That's it - i didn't even complete my presentation, he said you've done well and can leave the call. it only lasted for half an hr.

Times asked 2

Official solution

SimpleStatus code server ka result: 200 OK, 302 redirect, 400 bad input, 401/403 auth, 404 not found, 500 server error.

Advice: br confident and explain clearly

See reviews Level2_101 MAD1 Level 2

Aug 14, 2026

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1
Update code of search bar such that while searching using email ,if I write '@gmail.com' then it should not show any data . Search email only based on string before @ .

Times asked 2
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()
```
2
Difference between local storage and session storage. I used local storage so he asked that your app will be in danger if the data is stored locally even after refresh . Anyone can see credentials locally.

Times asked 2
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().
3
What is cache.cached and cache.memorize

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.
4
What is decorator and why we use decorator not functions.

Times asked 2
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
```
5
Why you have used jsonify

Times asked 2
Official solution

Simplejsonify Python dict/list ko JSON response + proper Content-Type deta hai.
Example
```
return jsonify(message='ok', count=3), 200
```
6

What are derivatives He basically go through my whole code and ask questions from anywhere. Some more questions were asked. I don't remember those.

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.

Advice: He is a chill person . Take your time while updating code question. Ask mostly questions from your code.

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