Proctor Level1_146

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See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

Detailed explanation of models,

Times asked 2
2

Conceptually explained the project,

Times asked 2
3

First asked for creating a new vue component for replicating the real-time within 10min I'm not completed,

Times asked 2
4

so given second chance for doing text rotation in backend within 10 min, 90% completed but times up, then he asked what I coded and what as to be done to complete it.

Times asked 2
5

Then theory questions,

Times asked 2
6

# about vue3

Times asked 2
7

It went upto 1.25 hrs

Times asked 2

Advice: Refer sheet responses and familiar with vue code and back-end api

See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

List 4 Vue directives

Times asked 2
2

forgot to write this

Times asked 2

See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

level1_146

Times asked 2
2

walkthrough of project structure

Times asked 2
3

explain model files

Times asked 2
4

backend jobs flow, what is redis is being used for here

Times asked 2
5

change calculation of parking slot rate to charge for full hour even if partial usage

Times asked 2
6

Create new vue file to show current time like an actual Clock😨

Times asked 2
7

HTTP vs HTTPs

Times asked 2
8

PUT vs PATCH

Times asked 2
9

some other theory qs which i didnt answer

Times asked 2
10

in the end i asked for feedback, he said to implement AI features for V3 and said my theoretical knowledge is not good lols

Times asked 2

Advice: the rate change question he asks very frequently. the new vue file for clock was not expected. theory questions also PUT PATCH was expected, rest all were new. just be good with theory questions

See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

- Calculate the rate in an hourly manner, for eg, if user is occupying the spot for a duration between 0 to 60 minutes, they are charged for the entire hour, if user is occupying the spot for a duration between 60 to 120 minutes, they are charged for two hours and so on. He said not to use any if statements and implement a formula to do the same

Times asked 2
2

- Implement front-end validation where the password should be between 8 to 20 characters and should have atleast one number

Times asked 2
3

- what is cascading

Times asked 2
4

- explain the models

Times asked 1
5

- explain the configurations for redis and cache

Times asked 2
6

- explain the authentication and authorization mechanism

Times asked 2

Advice: He is a very patient person and will allow you to look at the official documentation as well

See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

Most of time for explanation.

Times asked 2
2

Model working in code.

Times asked 2
3

There was small debug to do he said do it in 10 minutes.

Times asked 2
4

Diffrence Post put patch

Times asked 2
5

What is difference string and text in database table

Times asked 2
6

One 2 more questions. Didn't told to write code

Times asked 2

Advice: I would say explain in longer time you will not have time to except answering 4 5 question. A good proctor chill not a hurry man. Take you good time in explanation.

See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

* Told me to show id card

Times asked 2
2

* Then Demo the project

Times asked 2
3

* In Admin Dashboard make staked bar chart to simple bar chart

Times asked 2
4

* Create a function which check substring in a string, if true then returns index otherwise false

Times asked 2
5

* For parking price, returns price hour wise instead of calculating it every second.

Times asked 2
6

* Show where have you done caching

Times asked 2
7

* Show iimplemention for backend jobs

Times asked 2
8

* What we use vuex instead of local browser storage

Times asked 2
9

* Explain all your directories, how they connect.

Times asked 2
10

some more question, i cann't remember.

Times asked 2

Advice: Asks a lot of question, just understand your code in depth and also understand theory concepts.

See reviews Level1_146 MAD2 Level 1

Aug 16, 2026

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1

[13-08-2025 02:16 PM] Veer : The viva was good

Times asked 2
2

[13-08-2025 02:16 PM] Veer: then he asked me to put default value in the form

Times asked 1
3

[13-08-2025 02:16 PM] Veer: he said to disable copilot

Times asked 2
4

[13-08-2025 02:16 PM] Veer: code edit

Times asked 1
5

[13-08-2025 02:16 PM] Veer : and to make one post api endpoint which will give the value of where the substring starts in the parent string

Times asked 1
6

[13-08-2025 02:16 PM] Veer : and test it using postman

Times asked 2
7

[13-08-2025 02:16 PM] Veer : or thunder client

Times asked 2
8

[13-08-2025 02:16 PM] Veer : example : abc , 12abc12 so the abc is at start 2 and end 5

Times asked 1
9

[13-08-2025 02:16 PM] Veer : he allowed referring the official documentations

Times asked 1
10

[12-08-2025 10:39 PM] +91: Cover database concepts

Times asked 2
11

All the key

Times asked 2
12

All the relation

Times asked 2
13

Create a new route that gives add of two numbers

Times asked 2
14

On frontend

Times asked 2
15

More or less what I remembered

Times asked 2
16

Also cover celery redis

Times asked 2
17

[12-08-2025 10:41 PM] +91: chill

Times asked 1
18

[12-08-2025 10:42 PM] +91: just cover the concepts

Times asked 1
19

[12-08-2025 10:42 PM] +91 : seems vey good guy

Times asked 2
20

[12-08-2025 10:43 PM] +91: go slow take more time

Times asked 2

Advice: chill and prepare , prepare code edit extensively and know your project even if you chatgptied

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1
Detailed explanation of models,

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)
```
2

Conceptually explained the project,

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
First asked for creating a new vue component for replicating the real-time within 10min I'm not completed,

Times asked 2
Official solution

SimpleVue = UI ka smart assistant. Data badlo, screen khud update. MAD1 Jinja har click pe naya HTML.
Progressive frontend framework. Components, reactivity, directives.
MAD2 SPA: ek index.html, Vue Router pages, Flask sirf JSON.
Fayde: easy, SFC, docs. Vs React: templates HTML-like, course sikhata hai. Vs plain JS: baar-baar DOM mat chhedo.
Example
```

<template>
  <h1>{{ msg }}</h1>
</template>
<script>
export default { data() { return { msg: 'Hello' } } }
</script>
```
Project example: Navbar.vue + views (Login, Dashboard). data() / setup() reactive. fetch APIs.
Viva tipFayde: easy, SFC, reactivity. Vs React: chhota learning curve. Vs plain JS: UI state auto-update.
4

so given second chance for doing text rotation in backend within 10 min, 90% completed but times up, then he asked what I coded and what as to be done to complete it.

Times asked 2

Official solution

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

Then theory questions,

Times asked 2

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
6

# horizontal and vertical scaling.

Times asked 1

Official solution

SimpleVertical badi machine. Horizontal aur boxes + load balancer. JWT stateless horizontal friendly.
10k users: Postgres, Redis, gunicorn, CDN, pagination, indexes.
Millions: replicas, queue partition, more workers.
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: Course app vertical enough. Design answer scale-out.
7
# about vue3

Times asked 2
Official solution

SimpleVue = UI ka smart assistant. Data badlo, screen khud update. MAD1 Jinja har click pe naya HTML.
Progressive frontend framework. Components, reactivity, directives.
MAD2 SPA: ek index.html, Vue Router pages, Flask sirf JSON.
Fayde: easy, SFC, docs. Vs React: templates HTML-like, course sikhata hai. Vs plain JS: baar-baar DOM mat chhedo.
Example
```

<template>
  <h1>{{ msg }}</h1>
</template>
<script>
export default { data() { return { msg: 'Hello' } } }
</script>
```
Project example: Navbar.vue + views (Login, Dashboard). data() / setup() reactive. fetch APIs.
Viva tipFayde: easy, SFC, reactivity. Vs React: chhota learning curve. Vs plain JS: UI state auto-update.
8
It went upto 1.25 hrs

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: Refer sheet responses and familiar with vue code and back-end api

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1
List 4 Vue directives

Times asked 2
Official solution

SimpleDirectives Vue ke special attributes — HTML ko superpower.
v-if/else/show, v-for, v-bind (:), v-on (@), v-model, v-html (XSS), v-cloak, v-slot.
:src = v-bind:src. @click = v-on:click.
Custom directives bhi (v-focus) — course basics kaafi.
Example
```
<p v-if="ok">Yes</p>
<li v-for="u in users" :key="u.id">{{ u.name }}</li>
<input v-model="email">
<img :src="url">
```
Project example: List v-for :key. Form v-model. Admin v-if. Image :src.
Viva tip: src ke liye v-bind:src ka shorthand. @click = v-on:click.
2

forgot to write this

Times asked 2

Official solution

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

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1

level1_146

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.
2

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.
3

demo

Times asked 12

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

walkthrough of project structure

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
explain model files

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)
```
6

where is caching Implemented

Times asked 1

Official solution

SimpleHaan Redis routes X demo hit miss. Nahi: kaise add karte — decorator + redis + invalidation.
Don't lie. Examiner code dekhega.
Redis in-memory key-value store hai — fridge pe sticky note, poori kitchen (SQL database) har baar mat kholo.
MAD2 mein Redis do kaam: (1) cache — same venues/shows/dashboard JSON baar-baar DB se nahi (2) Celery broker — Flask task queue mein daalta hai, worker uthata hai.
Flow: cache.get(key) → hit pe return, miss pe SQLAlchemy + SET with timeout. Admin write ke baad cache.delete, warna stale list.
Source of truth database hi hai. Redis crash/band = cache miss (app chalni chahiye) + queue ruk sakti hai. Important bookings sirf Redis mein mat rakho.
Alag: Redis ≠ Memcached (Celery broker nahi). Redis ≠ localStorage (woh browser). redis-cli ping → PONG viva proof.
Project example: If yes open decorator. If no 4-step plan.
7
backend jobs flow, what is redis is being used for here

Times asked 2
Official solution

SimpleRedis fridge pe sticky note hai — poori kitchen (database) kholne ki zarurat nahi.
Redis in-memory key-value store hai. Data RAM mein rehta hai, isliye disk wale SQLite/Postgres se kai guna tez.
MAD2 mein Redis do kaam karta hai:
1) Cache — same venue/show/dashboard JSON baar-baar DB se mat nikaalo.
2) Celery message broker — Flask task queue mein daalta hai, worker uthata hai.
Source of truth database hi hai. Redis band ho to cache miss ho jaata hai aur Celery queue ruk sakti hai. Crash pe cache gayab ho sakta hai — isliye important data sirf Redis mein mat rakho.
Example
```
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
r.set('venues', json.dumps(data), ex=30)
print(r.get('venues'))
```
Project example: GET /api/venues pehle Redis dekho. Miss pe SQLAlchemy query, phir SET with timeout. Celery worker Redis list se daily reminder uthata hai.
Viva tipCache ke liye db=1, broker ke liye db=0 rakhna smart hai taaki keys mix na hon. Viva mein redis-cli ping → PONG dikhana strong hai.
8

change calculation of parking slot rate to charge for full hour even if partial usage

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.
9
Create new vue file to show current time like an actual Clock😨

Times asked 2
Official solution

SimpleVue = UI ka smart assistant. Data badlo, screen khud update. MAD1 Jinja har click pe naya HTML.
Progressive frontend framework. Components, reactivity, directives.
MAD2 SPA: ek index.html, Vue Router pages, Flask sirf JSON.
Fayde: easy, SFC, docs. Vs React: templates HTML-like, course sikhata hai. Vs plain JS: baar-baar DOM mat chhedo.
Example
```

<template>
  <h1>{{ msg }}</h1>
</template>
<script>
export default { data() { return { msg: 'Hello' } } }
</script>
```
Project example: Navbar.vue + views (Login, Dashboard). data() / setup() reactive. fetch APIs.
Viva tipFayde: easy, SFC, reactivity. Vs React: chhota learning curve. Vs plain JS: UI state auto-update.
10

HTTP vs HTTPs

Times asked 2

Official solution

SimpleHTTP plain text bhejta hai, HTTPS encrypted bhejta hai.
HTTP: data beech mein koi padh sakta hai (password, session). Port 80. Padlock nahi.
HTTPS: SSL/TLS se encrypt. Port 443. Certificate verify hota hai. Man-in-the-middle mushkil.
Examplecafe WiFi pe HTTP login karo to password sniff ho sakta hai. HTTPS pe attacker ko garbage dikhega.
Viva: HTTPS = HTTP + encryption + identity (certificate). Production apps hamesha HTTPS.
11

some other theory qs which i didnt answer

Times asked 2

Official solution

SimpleTheory = concepts: ORM, MVC, auth vs authz, Jinja inheritance, sessions. 1-line def + project example.
12

in the end i asked for feedback, he said to implement AI features for V3 and said my theoretical knowledge is not good lols

Times asked 2

Official solution

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

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1
- Calculate the rate in an hourly manner, for eg, if user is occupying the spot for a duration between 0 to 60 minutes, they are charged for the entire hour, if user is occupying the spot for a duration between 60 to 120 minutes, they are charged for two hours and so on. He said not to use any if statements and implement a formula to do the same

Times asked 2
Official solution

SimpleORM = Object Relational Mapping. Tables → Python classes. Raw SQL kam likhte ho.
Example
```
class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(120), unique=True)

User.query.get(5)  # SELECT ... WHERE id=5
```
2
- Implement front-end validation where the password should be between 8 to 20 characters and should have atleast one number

Times asked 2
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')
```
3
- difference between vuex and session-storage/local-storage

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().
4
- what is cascading

Times asked 2
Official solution

SimpleCASCADE = parent gaya to bacche bhi. Restrict = pehle bacche sambhalo.
ON DELETE CASCADE SQL. SQLAlchemy cascade='all, delete-orphan' collection se orphans.
Opposite auto nahi — child delete se parent nahi marata.
Venue delete: bookings restrict (safer viva) ya cascade+cancel policy. Examiner design poochta hai.
ON UPDATE CASCADE PK change — rare. SET NULL, RESTRICT bhi options.
Example
```
shows = db.relationship('Show', cascade='all, delete-orphan', back_populates='venue')
```
Project example: Show belongs Venue delete-orphan. Booking venue pe restrict — 'reassign first'.
Viva tipVenue delete pe bookings: restrict (mat delete) ya cascade+refund policy. Examiner design poochta hai. Cascade UPDATE bhi hota hai (PK change) — rare.
5
- explain the configurations for redis and cache

Times asked 2
Official solution

SimpleRedis fridge pe sticky note hai — poori kitchen (database) kholne ki zarurat nahi.
Redis in-memory key-value store hai. Data RAM mein rehta hai, isliye disk wale SQLite/Postgres se kai guna tez.
MAD2 mein Redis do kaam karta hai:
1) Cache — same venue/show/dashboard JSON baar-baar DB se mat nikaalo.
2) Celery message broker — Flask task queue mein daalta hai, worker uthata hai.
Source of truth database hi hai. Redis band ho to cache miss ho jaata hai aur Celery queue ruk sakti hai. Crash pe cache gayab ho sakta hai — isliye important data sirf Redis mein mat rakho.
Example
```
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
r.set('venues', json.dumps(data), ex=30)
print(r.get('venues'))
```
Project example: GET /api/venues pehle Redis dekho. Miss pe SQLAlchemy query, phir SET with timeout. Celery worker Redis list se daily reminder uthata hai.
Viva tipCache ke liye db=1, broker ke liye db=0 rakhna smart hai taaki keys mix na hon. Viva mein redis-cli ping → PONG dikhana strong hai.
6
- explain the authentication and authorization mechanism

Times asked 2
Official solution

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

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

Advice: He is a very patient person and will allow you to look at the official documentation as well

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1

Most of time for explanation.

Times asked 2

Official solution

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

Celery,redis code explain.

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
Model working in code.

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)
```
4

There was small debug to do he said do it in 10 minutes.

Times asked 2

Official solution

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

Explain database

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
6

Explain file structure

Times asked 1

Official solution

SimpleCode explain formula: input kya aaya → auth/validation → DB change → response/UI.
Viva tipFunction signature + 3-4 important lines + edge case.
7
Explain models

Times asked 3
Official solution

Simplemodels.py = har table ki class: columns, PK/FK, relationships. Yeh Model layer hai.
Suggested flow1) Classes list karo
2) Har table ka kaam 1 line
3) Relationships (1-M / M-M)
4) Constraints (unique, nullable)
Example
```
class Lot(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(80), nullable=False)
    spots = db.relationship('Spot', backref='lot', lazy=True)
```
8
Diffrence Post put patch

Times asked 2
Official solution

SimplePOST naya janam (har baar naya id). PUT poori photo replace. PATCH sticker chipkao.
POST create, not idempotent. PUT full update, idempotent. PATCH partial.
POST ki jagah PUT se REST semantics toot. GET typically no body.
CRUD map: POST create, GET read, PUT/PATCH update, DELETE delete.
Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).
4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.
Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.
Example
```
POST /api/venues
PUT  /api/venues/1   {all fields}
PATCH /api/venues/1 {only name}
```
Project example: POST /api/venues create. PUT /venues/1 saari fields. PATCH sirf name.
9
What is smtp

Times asked 1
Official solution

SimpleSMTP = email bhejne ka protocol, jaise HTTP web ka.
Ports: 587 STARTTLS, 465 SMTPS, 25 server-server. Dev: MailHog 1025.
Flask-Mail wrap. Sync send slow — Celery task se bhejo.
Fayda: universal. Nuksaan: spam, deliverability (SPF/DKIM), no guarantee like API.
Example
```
app.config['MAIL_SERVER'] = 'localhost'
app.config['MAIL_PORT'] = 1025
mail.send(Message('Hi', recipients=['a@b.com'], body='Hello'))
```
Project example: MAIL_SERVER=localhost MAIL_PORT=1025. Production later SendGrid/SES.
Viva tipFayda: universal. Nuksaan: deliverability, spam, sync send slow — isliye Celery + MailHog in dev.
10
What is difference string and text in database table

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.
11
One 2 more questions. Didn't told to write 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'
```

Advice: I would say explain in longer time you will not have time to except answering 4 5 question. A good proctor chill not a hurry man. Take you good time in explanation.

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1

* Told me to 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

* Then Demo the 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.
3

* In Admin Dashboard make staked bar chart to simple bar chart

Times asked 2

Official solution

SimpleGraph/chart section: Chart.js labels/datasets ya template loop. Color/data source file dikhao aur chhota change karke refresh.
4
* Create a function which check substring in a string, if true then returns index otherwise false

Times asked 2
Official solution

SimpleChhota JS function likho — validate form, toggle class, fetch call.
Example
```
function validateEmail(e) {
  return e.includes('@') && e.includes('.');
}
```
5

* For parking price, returns price hour wise instead of calculating it every second.

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.
6
* Explain your database model

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)
```
7
* Show where have you done 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
* Show iimplemention for backend jobs

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.
9

* What we use vuex instead of local browser storage

Times asked 2

Official solution

SimplelocalStorage sessionStorage cookies IndexedDB memory Cache API. Types browser storage. Client-side storage.
What types available. Other than LS.
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: We used LS for JWT. Cookies empty.
10
* What is cascade delete, how does it works, what happens if you don't use it.

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.
11

* Explain all your directories, how they connect.

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.
12

some more question, i cann't remember.

Times asked 2

Official solution

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

Advice: Asks a lot of question, just understand your code in depth and also understand theory concepts.

See reviews Level1_146 MAD1 Level 1

Aug 14, 2026

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1

[13-08-2025 02:16 PM] Veer : The viva was good

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
2
[13-08-2025 02:16 PM] Veer : he asked question like what is cascade delete, post vs put vs patch , vuex store vs session and local storage why vuex store is better

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.
3
[13-08-2025 02:16 PM] Veer: he said to disable copilot

Times asked 2
Official solution

SimpleViva Copilot/ChatGPT band. Docs OK usually. Original soch live coding.
VS Code disable extension workspace.
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
```
VS Code: Extensions → GitHub Copilot → Disable (Workspace).
```
Project example: Extensions disable. Second screen clear.
Viva tipDocs/MDN khol sakte ho usually, paste-from-ChatGPT nahi.
4
[13-08-2025 02:16 PM] Veer : and test it using postman

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

[13-08-2025 02:16 PM] Veer : or thunder client

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
6
[12-08-2025 10:39 PM] +91: Cover database concepts

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.
7

All the key

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
8

All the relation

Times asked 2

Official solution

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

V- if v- show

Times asked 1

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
10
Create a new route that gives add of two numbers

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

On frontend

Times asked 2

Official solution

SimpleMAD1 frontend usually Jinja templates + HTML/CSS/Bootstrap (+ thoda JS). MAD2 pe Vue ho to clearly bolo.
12

More or less what I remembered

Times asked 2

Official solution

SimpleViva wrap-up hai. Short thanks + confirm submission ZIP latest hai.
13
Also cover celery redis

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.
14
[12-08-2025 10:42 PM] +91 : seems vey good 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.
15

[12-08-2025 10:43 PM] +91: go slow take more time

Times asked 2

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.

Advice: chill and prepare , prepare code edit extensively and know your project even if you chatgptied

See reviews Level1_146 MAD2 Level 1

Aug 3, 2026

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1

Show your ID card.

Times asked 23

Official solution

SimpleCamera pe college ID — naam photo match. Identity viva ki pehli gate.
Pehle se haath mein, glare nahi. Examiner screenshot. Phir GitHub + portal ZIP run.
Name GitHub/portal se mismatch red flag.
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.
Project example: ID dikhao, bolo roll/name, phir screen share repo.
Viva tipPehle se ID haath mein rakho, glare mat aane do. Examiner screenshot/verify karta hai. Iske baad GitHub + project run.
2

Demonstrate your application.

Times asked 8

Official solution

SimpleDemo 5–7 min ki kahani: saari roles, koi milestone skip nahi, bolte-bolte dikhao.
Examiner list tick karta hai. Crash ho to panic nahi — terminal error padho.
Code tab kholna jab poochhein. Extra uncommitted features mat dikhana agar portal ZIP mein nahi.
Suggested flow1) Register/login user
2) Admin login — CRUD
3) Approval/blacklist
4) Booking/apply + edge case
5) Search + charts
6) CSV export / email job
7) Logout
Project example: Jo statement/parking/jobs/tickets hai uske user+admin journeys.
Viva tipBol: 'Yahan overbooking rokta hoon'. Mandatory features pehle, polish baad.
3

Explain the project structure.

Times asked 2

Official solution

Simplebackend create_app models api jobs. frontend src router. config env. README.
Don't read every file. 6 roles.
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: tree command or VSCode explorer.
4

Explain the file structure.

Times asked 1

Official solution

Simplebackend create_app models api jobs. frontend src router. config env. README.
Don't read every file. 6 roles.
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: tree command or VSCode explorer.
5

Explain your database models.

Times asked 8

Official solution

SimpleTables + lines (FK) + 1-M / M-M. Draw mentally, phir models.py.
Har class: PK, important columns, relationships. Why normalized (no duplicate venue name in every show as only string without FK).
Indexes search columns. Unique email. Cascade policy bookings pe.
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: User-Role M-M. User-Booking 1-M. Venue-Show 1-M. Show-Booking 1-M.
6

Explain the database design.

Times asked 2

Official solution

SimpleTables + lines (FK) + 1-M / M-M. Draw mentally, phir models.py.
Har class: PK, important columns, relationships. Why normalized (no duplicate venue name in every show as only string without FK).
Indexes search columns. Unique email. Cascade policy bookings pe.
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: User-Role M-M. User-Booking 1-M. Venue-Show 1-M. Show-Booking 1-M.
7

Explain the backend jobs flow.

Times asked 1

Official solution

SimpleUser click vs beat. Redis. Worker. Side effect email/file. Explain backend jobs flow. Data flow user-triggered Celery.
Diagram.
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: export vs reminder.
8
Explain where caching is implemented.

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.
9

Explain how Redis is used in your project.

Times asked 1

Official solution

Simpledb indexes cache vs broker, ping, which keys, why used.
Physical RAM. Vue nahi. Hit miss. Celery alag.
Redis in-memory key-value store hai — fridge pe sticky note, poori kitchen (SQL database) har baar mat kholo.
MAD2 mein Redis do kaam: (1) cache — same venues/shows/dashboard JSON baar-baar DB se nahi (2) Celery broker — Flask task queue mein daalta hai, worker uthata hai.
Flow: cache.get(key) → hit pe return, miss pe SQLAlchemy + SET with timeout. Admin write ke baad cache.delete, warna stale list.
Source of truth database hi hai. Redis crash/band = cache miss (app chalni chahiye) + queue ruk sakti hai. Important bookings sirf Redis mein mat rakho.
Alag: Redis ≠ Memcached (Celery broker nahi). Redis ≠ localStorage (woh browser). redis-cli ping → PONG viva proof.
Project example: config URLs + decorator + celery broker.
10
Explain the Celery and Redis code.

Times asked 1
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.
11

Show the frontend routes.

Times asked 1

Official solution

SimpleVue router.js. Flask @app.route / resources.py.
Both if asked frontend vs backend.
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: Don't mix.
Project example: Don't mix.
12
What is Cascade Delete (ON DELETE CASCADE)?

Times asked 1
Official solution

SimpleCASCADE = parent gaya to bacche bhi. Restrict = pehle bacche sambhalo.
ON DELETE CASCADE SQL. SQLAlchemy cascade='all, delete-orphan' collection se orphans.
Opposite auto nahi — child delete se parent nahi marata.
Venue delete: bookings restrict (safer viva) ya cascade+cancel policy. Examiner design poochta hai.
ON UPDATE CASCADE PK change — rare. SET NULL, RESTRICT bhi options.
Example
```
shows = db.relationship('Show', cascade='all, delete-orphan', back_populates='venue')
```
Project example: Show belongs Venue delete-orphan. Booking venue pe restrict — 'reassign first'.
Viva tipVenue delete pe bookings: restrict (mat delete) ya cascade+refund policy. Examiner design poochta hai. Cascade UPDATE bhi hota hai (PK change) — rare.
13

Explain database keys (Primary Key, Foreign Key, Candidate Key, etc.).

Times asked 1

Official solution

SimpleCandidate key koi bhi unique ID (email, id). PK unme se election jeetne wala.
Email candidate. Hum id PK rakhte hain kyunki email change ho sakta.
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: User: id PK, email unique candidate.
14

Explain database relationships.

Times asked 4

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.
15

Difference between STRING and TEXT data types.

Times asked 1

Official solution

SimpleString limited. Text unlimited. Descriptions TEXT, emails String.
Difference STRING and TEXT.
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: movie description Text.
Project example: movie description Text.
16
Difference between v-if and v-show.

Times asked 10
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.
17

Difference between Vuex Store, Session Storage, and Local Storage.

Times asked 1

Official solution

SimpleStore reactive RAM. LS/SS persist strings. Combine rehydrate store from LS on boot.
Difference Vuex Store Session Local Storage.
Component = reusable UI block (Navbar, Card). Props parent→child data, emit child→parent event. Slots parent HTML inner content.
computed cache + reactive derive (filtered list). watch side-effect (query change pe API). methods events. ref() primitive, reactive() object. Vuex/Pinia global store; localStorage persist, store nahi.
SFC: template + script + style ek .vue file. Parent-child exam favourite: list parent, row child :item + @delete.
Project example: login commit + setItem. main.js getItem commit.
18

Why is Vuex better than Session Storage/Local Storage?

Times asked 1

Official solution

SimpleSame API getItem/setItem. SS tab close pe saaf. LS survive. Shared computer pe SS thoda safer.
Token LS common. Session storage quiz in-progress bhi.
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: token localStorage. Don't mix randomly.
19

What are the new features in Vue 3?

Times asked 1

Official solution

SimpleVue 3 naya engine: Composition API, fragments, better TS, tree-shaking. Vue 2 Options + filters.
mounted vs onMounted. Filters Vue 3 mein hata — computed/methods.
Version package.json / Vue.version se dikhao. Jo use kiya uske hooks bolo.
SPA = ek HTML, Vue Router se views, full reload nahi. MPA = MAD1 Jinja har URL naya HTML.
Vue Router: routes array, router-view, router-link, meta.auth + beforeEach guard. Dynamic /venues/:id → $route.params.id.
Vite/CLI SFC + npm build dist/. CDN script tag, no SFC. Jo tumne use kiya wahi justify. Flask send_from_directory('dist') production pattern.
Project example: package.json vue ^3.x. setup() + onMounted fetch.
Viva tipVersion package.json / Vue.version se dikhao. MAD2 dono allowed usually — jo use kiya uske hooks bolo (mounted vs onMounted).
20
Difference between POST, PUT, and PATCH.

Times asked 1
Official solution

SimplePOST naya janam (har baar naya id). PUT poori photo replace. PATCH sticker chipkao.
POST create, not idempotent. PUT full update, idempotent. PATCH partial.
POST ki jagah PUT se REST semantics toot. GET typically no body.
CRUD map: POST create, GET read, PUT/PATCH update, DELETE delete.
Pehle 1-line definition, phir related MAD2 layer (Vue SFC / Flask route / models.py / tasks.py / Redis).
4-line formula: input kahan se aaya, auth/validation kaunsa, DB ya cache ya Celery, kya return.
Related mix mat karo — cache ≠ Celery, authentication ≠ authorization, v-if ≠ v-show, Beat ≠ Worker. Follow-up ke liye ek difference ready rakho.
Example
```
POST /api/venues
PUT  /api/venues/1   {all fields}
PATCH /api/venues/1 {only name}
```
Project example: POST /api/venues create. PUT /venues/1 saari fields. PATCH sirf name.
21

Difference between HTTP and HTTPS.

Times asked 6

Official solution

SimpleHTTP postcard (koi padh le). HTTPS envelope (TLS lock).
Same headers, encrypted channel. MITM se password/token bachao. Local viva HTTP OK.
HTTP/1.1 version keep-alive. TCP neeche, TLS security layer, SMTP mail alag.
Browser + API ke beech extra darwaze: CORS origin allow, HTTPS encrypt transit, CSRF cookie-auto-send attack, XSS HTML inject, SQL injection raw query.
MAD2 SPA: Vue :8080 Flask :5000 → Flask-CORS. JWT localStorage XSS se chori ho sakta — v-html user input pe avoid. Password Network tab localhost pe dikhega; prod HTTPS, response mein password echo nahi.
401 unauthenticated, 403 unauthorized, 400 validation. Hash one-way — SHA decrypt nahi hota. Secret key .env, GitHub pe nahi.
Project example: Dev localhost http. Production https:// + cert.
Viva tipProtocols: HTTP/HTTPS app, TCP transport, TLS security, SMTP mail. HTTP/1.1 version — persistent connections.
22

Create an API that returns the sum of two numbers.

Times asked 1

Official solution

SimpleGET args a,b or POST JSON jsonify sum.
Create API sum two numbers.
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: request.args or json.
Project example: request.args or json.
23
Create a POST API that returns the start and end index of a substring within a parent string.

Times asked 1
Official solution

Simples.find(sub) start end. not found -1. POST start end index of substring.
Handle missing.
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
```
i = parent.find(sub)
return jsonify(start=i, end=i+len(sub)-1 if i>=0 else None)
```
Project example: Postman parent+sub.
24

Test the API using Postman or Thunder Client.

Times asked 1

Official solution

SimpleMethod URL Headers Authorization JSON body. 200/401 bina Vue — backend prove.
Login copy token. Collection. Thunder Client same.
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: Show 3 requests. Examiner loves this.
25

Set a default value in a form field.

Times asked 1

Official solution

Simplev-model initial data(){ city: 'Chennai' }. Set default value form field.
or :value.
ORM objects ko tables se map karta hai — raw SQL kam. SQLAlchemy MAD2 default.
class User(db.Model) + Column + relationship. query.filter_by / db.session.get. Fayda: portable SQLite→Postgres, injection se safer. Nuksaan: N+1, complex SQL.
SQLite file, zero server — course friendly. Postgres scale. Relationships: FK, backref, lazy/joinedload, cascade on delete. Constraints unique/not null integrity.
Bookings source of truth DB, Redis cache copy.
Project example: form data().
26

Fix a small bug/debugging task.

Times asked 1

Official solution

SimpleConsole/terminal padho, reproduce, smallest fix, regression na todo.
Examiner patience. Think aloud. Copilot band.
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: F12 / celery log / flask traceback.
27

Modify parking charge calculation to always charge for a full hour, even for partial usage.

Times asked 1

Official solution

Simplemath.ceil(minutes/60)*rate even 1 min = 1 hour.
Modify parking charge full hour.
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: ceil import math.
Project example: ceil import math.
28
Create a Vue component that displays a real-time clock.

Times asked 1
Official solution

SimplesetInterval mounted clearInterval unmounted. Real-time clock. Display server time refresh optional.
{{ now.toLocaleTimeString() }}.
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
```
data() { return { now: new Date() } },
mounted() { this.t = setInterval(() => this.now = new Date(), 1000) }
```
Project example: Clock.vue.
29

Implement text rotation logic in the backend.

Times asked 1

Official solution

SimpleBackend s[n:]+s[:n] rotate. API POST {text,n}. Implement text rotation backend.
Validate n.
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: new route.
Project example: new route.
30

Difference between Horizontal Scaling and Vertical Scaling.

Times asked 3

Official solution

SimpleVertical badi machine. Horizontal aur boxes + load balancer. JWT stateless horizontal friendly.
10k users: Postgres, Redis, gunicorn, CDN, pagination, indexes.
Millions: replicas, queue partition, more workers.
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: Course app vertical enough. Design answer scale-out.
31
What is SMTP?

Times asked 3
Official solution

SimpleSMTP = email bhejne ka protocol, jaise HTTP web ka.
Ports: 587 STARTTLS, 465 SMTPS, 25 server-server. Dev: MailHog 1025.
Flask-Mail wrap. Sync send slow — Celery task se bhejo.
Fayda: universal. Nuksaan: spam, deliverability (SPF/DKIM), no guarantee like API.
Example
```
app.config['MAIL_SERVER'] = 'localhost'
app.config['MAIL_PORT'] = 1025
mail.send(Message('Hi', recipients=['a@b.com'], body='Hello'))
```
Project example: MAIL_SERVER=localhost MAIL_PORT=1025. Production later SendGrid/SES.
Viva tipFayda: universal. Nuksaan: deliverability, spam, sync send slow — isliye Celery + MailHog in dev.
32
Disable GitHub Copilot during the viva.

Times asked 1
Official solution

SimpleViva Copilot/ChatGPT band. Docs OK usually. Original soch live coding.
VS Code disable extension workspace.
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
```
VS Code: Extensions → GitHub Copilot → Disable (Workspace).
```
Project example: Extensions disable. Second screen clear.
Viva tipDocs/MDN khol sakte ho usually, paste-from-ChatGPT nahi.

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