Viva prep · Real questions · Student experiences Enroll in Bootcamp

Study workspace

Viva Prep

Prepare in structure for the Project Mentorship.

Start filtering
18945 Questions
268 Proctors

Lazy IITians

Who are we?

A student-built prep community for IITM BS — real viva questions, shared experiences, and structured practice so you walk into mentorship confident.

Fill the form and join us

Enroll in Bootcamp

Learn about us

Watch how LazyIITians works

Find questions

Search by question text across the whole library, then narrow with subject, level, and proctor.

Share your experience Add your viva experience here

Question sets

1661 sets · page 23/208

See reviews Level2_135 MAD1 Level 2
Download all Download all
Copy set link
  1. 1
    During the Level 2_135 meeting with the proctor, he first asked me my name. Then he asked me to show my GitHub, which I did. After that, he asked me to close all the existing tabs, and I did.
    Times asked 1
    Official solution

    SimpleLevel = viva difficulty band. Level 1 usually demo + basics; higher pe live coding + deeper theory.

    Viva tipJo level assign hai uske hisaab se demo + theory ready rakho.

  2. 2
    Next, he asked me to download the code. I downloaded it and tried to run it, but it was taking a long time. I asked him if I could run the project directly using "app.py" instead, and he agreed. I then ran the application using "app.py".
    Times asked 1
    Official solution

    SimpleExaminer portal wala submitted ZIP chahta hai. Local extra changes mat dikhana.

    Suggested flow1) Portal ZIP download
    2) Extract
    3) venv + pip install -r requirements.txt
    4) flask run / python app.py

  3. 3
    After the application started, he asked me to log in as the admin. Once logged in, he asked me to create a trek, which I did. Then he asked me to create a guide. After creating the guide, I went to the approval section on the admin page and approved the guide.
    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.

  4. 4
    Next, he asked me to create a user account. I created the user and then logged in as that user to book the trek. After booking the trek, I went back to the admin account.
    Times asked 1
    Official solution

    SimpleProject overview: problem → roles → main entities → key flows (register, book, admin approve).

    Viva tip1 minute elevator pitch ready rakho, phir demo.

  5. 5
    The proctor then asked me to blacklist the guide. Instead, I accidentally removed the guide. I told him that I couldn't blacklist the guide because I had already removed it, so I would need to create it again. I created the guide again, logged back into the admin account, and approved the guide once more.
    Times asked 1
    Official solution

    SimpleBlacklist/block: user.status='blocked' check login/booking pe. Temporary flag vs hard delete permanent.

  6. 6
    After that, he asked me to add a Staff column to the booking table so that the staff name would be displayed. I added the Staff column, but I was unable to fetch and display the staff name correctly. I tried to implement it but couldn't complete it successfully.
    Times asked 1
    Official solution

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

  7. 7
    He then asked me the following conceptual questions:
    Times asked 1
    Official solution

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

  8. 8
    - Whether POST and PUT are idempotent or not.
    Times asked 1
    Official solution

    SimpleIdempotent = same request N baar = same effect. GET/PUT/DELETE usually; POST create duplicate ho sakta hai.

  9. 9
    - What is backref?
    Times asked 1
    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')
  10. 10
    - What is a Blueprint in Flask?
    Times asked 1
    Official solution

    SimpleBlueprint se app ko modules mein todte ho — auth, admin, user alag files. Scale + clean structure.

    Example

    auth_bp = Blueprint('auth', __name__, url_prefix='/auth')

@auth_bp.route('/login')
def login(): ...

app.register_blueprint(auth_bp)

    Viva tipViva: 'kyun blueprint?' → separation of concerns, badi app maintainable.

  11. 11
    After the questions, he said, "Okay, thank you." I remained on the meeting screen for a moment and asked, "Should I leave?" He replied, "Okay, you can leave." Then I left the meeting.
    Times asked 1
    Official solution

    SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.

    Suggested flow1) Concept kya hai?
    2) Mere code mein kahan?
    3) Example / demo
    4) Edge case

    Example

    # related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect

    Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.

Advice: He was nonchalant.Well not help u and will be disappointed in u if u r not able to do it.
See reviews Level1_128 MAD1 Level 1
Download all Download all
Copy set link
  1. 1
    Difference between Css and bootstrap
    Times asked 1
    Official solution

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

  2. 2
    Show which code creates the database
    Times asked 1
    Official solution

    SimpleDemo script pehle se practice: 5–7 min, Admin + User roles, saare mandatory features.

    Suggested flow1) Register/login user
    2) Admin login — CRUD
    3) Approval/blacklist
    4) Booking/apply + edge case
    5) Search
    6) Logout

    Viva tipBolte-bolte dikhao. Code tab kholna jab poochhein.

Advice: Prepare this sheet well and don't panic during viva
See reviews Level1_128 MAD1 Level 1
Download all Download all
Copy set link
  1. 1
    also y we are using venv
    Times asked 1
    Official solution

    SimpleVirtualenv isolated Python env — project deps system Python ko nahi bigaadte.

    Example

    python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
See reviews Level1_128 MAD1 Level 1
Download all Download all
Copy set link
  1. 1
    -then asked me to write route to print whether the number is even or odd
    Times asked 1
    Official solution

    SimpleLive Flask coding: chhota route likho, save, browser/curl se test. Syntax error terminal mein padho.

    Example

    @app.route('/ping')
def ping():
    return jsonify(ok=True)

@app.route('/even/<int:n>')
def even(n):
    return 'even' if n % 2 == 0 else 'odd'
  2. 2
    -filter vs filter_by
    Times asked 1
    Official solution

    Simplefilter_by kwargs equality. filter expressions >, ilike, joins.

    Difference filter and filter_by.

    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

    User.query.filter_by(email='a@b.com').first()
User.query.filter(User.age > 30, User.name.ilike('%ram%')).all()

    Project example: email filter_by. age>30 filter.

  3. 3
    -and asked to show models.py
    Times asked 1
    Official solution

    Simplemodels.py = har table ki class: columns, PK/FK, relationships. Yeh Model layer hai.

    Suggested flow1) Classes list karo
    2) Har table ka kaam 1 line
    3) Relationships (1-M / M-M)
    4) Constraints (unique, nullable)

    Example

    class Lot(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(80), nullable=False)
    spots = db.relationship('Spot', backref='lot', lazy=True)
Advice: Just be confident , even if u make some mistake while writing the code at the end he guides
See reviews LEVEL1_VIVA35 MAD1 Level 1
Download all Download all
Copy set link
  1. 1
    •Demonstrate the project
    Times asked 1
    Official solution

    SimpleDemo script pehle se practice: 5–7 min, Admin + User roles, saare mandatory features.

    Suggested flow1) Register/login user
    2) Admin login — CRUD
    3) Approval/blacklist
    4) Booking/apply + edge case
    5) Search
    6) Logout

    Viva tipBolte-bolte dikhao. Code tab kholna jab poochhein.

  2. 2
    •diff between GET and POST
    Times asked 1
    Official solution

    SimpleGET data read/show karta hai (idempotent). POST create/submit karta hai (form).

    Example

    @app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        # validate + session
        ...
    return render_template('login.html')
  3. 3
    Then said all the best for viva2 and there is no need to be panic, This is a very good project.
    Times asked 1
    Official solution

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

See reviews PROCTOR799 MAD1 Level 1
Download all Download all
Copy set link
  1. 1
    What exactly is Db.Model, why are we using it
    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)
  2. 2
    Show add trek, add staff, and search functions
    Times asked 1
    Official solution

    SimpleSearch: form/query param → ilike filter → results template.

    Example

    q = request.args.get('q', '').strip()
lots = Lot.query.filter(Lot.name.ilike(f'%{q}%')).all()
  3. 3
    Checked if overbooking is prevented or not
    Times asked 1
    Official solution

    SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.

    Suggested flow1) Concept kya hai?
    2) Mere code mein kahan?
    3) Example / demo
    4) Edge case

    Example

    # related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect

    Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.

  4. 4
    User Profile - editing , what attribute do u use to get existing values
    Times asked 1
    Official solution

    SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.

    Suggested flow1) Concept kya hai?
    2) Mere code mein kahan?
    3) Example / demo
    4) Edge case

    Example

    # related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect

    Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.

  5. 5
    Write the code to connect the app and db
    Times asked 1
    Official solution

    SimpleLive Flask coding: chhota route likho, save, browser/curl se test. Syntax error terminal mein padho.

    Example

    @app.route('/ping')
def ping():
    return jsonify(ok=True)

@app.route('/even/<int:n>')
def even(n):
    return 'even' if n % 2 == 0 else 'odd'
  6. 6
    Write code to create a card around the 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. 7
    What attribute is used to ensure that something has to be filled in a form - required.
    Times asked 1
    Official solution

    SimpleORM = Object Relational Mapping. Tables → Python classes. Raw SQL kam likhte ho.

    Example

    class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(120), unique=True)

User.query.get(5)  # SELECT ... WHERE id=5
Advice: Very friendly proctor and very polite. Keep calm and ensure you know topics in detail.
See reviews level1_viva11 MAD1 Level 1
Download all Download all
Copy set link
  1. 1
    Viva-1
    Times asked 1
    Official solution

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

  2. 2
    She check first student 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. 3
    She check gir collaborators then,
    Times asked 1
    Official solution

    SimpleGitHub repo open karo: commits, collaborators, README. Examiner check karta hai tumne khud kaam kiya.

    Example

    Settings → Collaborators
Commits: regular messages, last-day dump nahi.

    Viva tipPrivate repo access pehle de do. Main branch submitted ZIP se match honi chahiye.

  4. 4
    She told download the file and run the code,
    Times asked 1
    Official solution

    SimpleExaminer portal wala submitted ZIP chahta hai. Local extra changes mat dikhana.

    Suggested flow1) Portal ZIP download
    2) Extract
    3) venv + pip install -r requirements.txt
    4) flask run / python app.py

  5. 5
    Then login admin and create new staff and user
    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. 6
    Then check all functionality of admin, staff, users
    Times asked 1
    Official solution

    SimplePehle 1-line definition, phir apne MAD1 project mein file dikhao, phir chhota example.

    Suggested flow1) Concept kya hai?
    2) Mere code mein kahan?
    3) Example / demo
    4) Edge case

    Example

    # related file: models.py / routes / template
# formula: request → check/auth → DB → render/redirect

    Viva tipExact line yaad nahi to honestly related part dikhao. Bluff mat karo.

  7. 7
    And last she ask some questions like what is mvc, curd and then change port number and change the colour of login button
    Times asked 1
    Official solution

    SimpleMVC: Model=data (SQLAlchemy), View=Jinja HTML, Controller=Flask routes/business logic.

    Flask loosely MVC follow karta hai — routes controllers, templates views, models.py models.

Advice: She is very sweet and helpful I did many mistakes but she corrected me and give time. If you have this proctor then you must know your code and some basic theory questions that's and able to change or write code. That's all
See reviews Level2_141 MAD1 Level 2
Download all Download all
Copy set link
  1. 1
    Checking: Id card, Github collaborator.
    Times asked 1
    Official solution

    SimpleGitHub repo open karo: commits, collaborators, README. Examiner check karta hai tumne khud kaam kiya.

    Example

    Settings → Collaborators
Commits: regular messages, last-day dump nahi.

    Viva tipPrivate repo access pehle de do. Main branch submitted ZIP se match honi chahiye.

  2. 2
    Run app : just the basic core functionality - • Register, Login • CRUD - Create Trek, Update Trek, Delete Trek • Search Functionality • Staff Assignment • Staff Approval
    Times asked 1
    Official solution

    SimpleSearch: form/query param → ilike filter → results template.

    Example

    q = request.args.get('q', '').strip()
lots = Lot.query.filter(Lot.name.ilike(f'%{q}%')).all()
  3. 3
    Open Notepad: Register Route. • wrote 6-7 lines ( I was explaining it too) and he said Okay, now show me your code.
    Times asked 1
    Official solution

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

  4. 4
    Open Code: I showed routes.py THEORY QUESTIONS: a) ORM b) MVC c) Authentication vs Authorization ~ I kept explaining and showing it in my code as well.
    Times asked 1
    Official solution

    SimpleAuthentication: tu kaun hai? (login). Authorization: tujhe permission hai? (role check).

    Example

    # auth
if check_password_hash(user.password, pwd):
    session['user_id'] = user.id

# authz
if user.role != 'admin':
    abort(403)
  5. 5
    Finished : Asked me if I had any questions.
    Times asked 1
    Official solution

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

Advice: OVERALL: Very calm and chill guy. Gives you time. JUST KNOW THE CODE. WHAT IT IS, WHY IT'S THERE AND WHAT IT DOES! may you do great 🙏🏻🌸
Maintaine By Lazy IITians Team + IITM BS students Regualr for More data you have