Quiz Space

May 2024 term · Modern Application Development I · BSCS2003

MAD 1 End Term: 1 September 2024, Set QDF3 (May 2024 term)

The IIT Madras BS Modern Application Development I (MAD 1) End Term paper sat on 1 Sept 2024, in the May 2024 term, set QDF3: 32 questions for 100 marks in 180 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.

Questions
32
Marks
100
Duration
180 min
MCQ
26
MSQ
6
Take as mock testPractise with answers

Updated

Official paper: IIT M FOUNDATION DIPLOMA AN EXAM QDF3 01 Sep 2024 · No negative marking.

Question 1

+2 marksOne correct option

Consider that you have installed some python packages using requirements.txt. Which command you will use to list the installed packages in the virtual environment?

  1. A

    pip list

  2. B

    pip freeze

  3. C

    ls -la

  4. D

    ls

Show answer

Correct answer

  • B

    pip freeze

Question 1 on its own page

Question 2

+2 marksOne correct option

A certain text document consisting of only alphanumeric characters (including spaces) takes 1,52,000 bits, when encoded with UCS-4 (32 bit) encoding. How many bits will the same document take if encoded with ASCII 7-bit encoding?

  1. A

    24000 bits

  2. B

    68000 bits

  3. C

    33250 bits

  4. D

    152000 bits

Show answer

Correct answer

  • C

    33250 bits

Question 2 on its own page

Question 3

+2 marksOne correct option

The ability of an application to work with different input modalities beyond keyboard highlights which of the following accessibility principle?

  1. A

    Perceivable

  2. B

    Robust

  3. C

    Understandable

  4. D

    Operable

Show answer

Correct answer

  • D

    Operable

Question 3 on its own page

Question 4

+2 marksOne correct option

Consider the following Python code snippet “code.py”.

Filename: code.py

python
import sys
from jinja2 import Template
vars = sys.argv


course_technologies = {'python': 'backend', 'javascript': 'frontend'}
template = Template("This course focuses on {{ technology }} development.")


if len(vars) > 2 and vars[2] in course_technologies:
    course = vars[1]
    technology = course_technologies[course]
    print(template.render(technology=technology))
else:
    print("Please specify a valid course name!")

Which of the following will be the correct command line input to the terminal to get the output : Please specify a valid course name!. ?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • D
Question 4 on its own page

Question 5

+2 marksOne correct option

Consider the following flask app and Jinja2 template.

app.py

python
from flask import Flask, render_template
app = Flask(__name__)


@app.route('/')
def index():
  return render_template("index.html", data=['Harry', 'Karl', 'John',
'Jason', 'Ros'])


app.run()

index.html

html
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Macro</title>
</head>
<body>
    {% macro unordered_list(items)%}
        <ul>
        {% for item in items %}
            {% if item|length >= 5 %}
            <li>{{item}}</li>
            {% endif %}
        {% endfor %}
        </ul>
    {% endmacro %}
    {{ unordered_list(data) }}
</body>
</html>

If the flask app is running locally on http://127.0.0.1:5000. What will be the output on the browser for the base URL?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • B
Question 5 on its own page

Question 6

+2 marksOne correct option
  1. A

    A → 1, B → 2, C → 3, D → 4

  2. B

    A → 4, B → 1, C → 2, D → 3

  3. C

    A → 4, B → 3, C → 2, D → 1

  4. D

    A → 3, B → 2, C → 1, D → 4

Show answer

Correct answer

  • B

    A → 4, B → 1, C → 2, D → 3

Question 6 on its own page

Question 7

+2 marksOne correct option
  1. A

    AC0A FE01

  2. B

    CA10 EF0A

  3. C

    AC10 FE0A

  4. D

    AC01 0AEF

Show answer

Correct answer

  • C

    AC10 FE0A

Question 7 on its own page

Question 8

+3 marksOne correct option

Consider the following HTML document with an embedded style sheet.

html
<!DOCTYPE html>
<html>
   <head>
       <title>Quiz 1</title>
       <style type="text/css">
           div{
            padding-left: 10px;
            margin-right: 15px;
            border-style: solid;
            border-width: 5px;
            width: 2000px;
            height: 20px;
           }
       </style>
   </head>
   <body>
       <div>My first Div element</div>
    </body>
</html>

Which of the following figures correctly represents the box model of the above HTML document?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • B
Question 8 on its own page

Question 9

+3 marksOne correct option
  1. A

    1 - c, 2 - a, 3 - b, 4 - d

  2. B

    1 - a, 2 - b, 3 - c, 4 - d

  3. C

    1 - b, 2 - d, 3 - a, 4 - c

  4. D

    1 - d, 2 - c, 3 - b, 4 - a

Show answer

Correct answer

  • A

    1 - c, 2 - a, 3 - b, 4 - d

Question 9 on its own page

Question 10

+3 marksOne correct option
  1. A

    a = 8; b = 10; c = 16;

  2. B

    a = 10; b = 2; c = 16;

  3. C

    a = 8; b = 16; c = 10;

  4. D

    a = 2; b = 16; c = 8;

Show answer

Correct answer

  • A

    a = 8; b = 10; c = 16;

Question 10 on its own page

Question 11

+3 marksOne correct option
  1. A

    a - 4, b - 1, c - 6

  2. B

    a - 5, b - 3, c - 2

  3. C

    a - 5, b - 1, c - 2

  4. D

    a - 5, b - 3, c - 6

Show answer

Correct answer

  • B

    a - 5, b - 3, c - 2

Question 11 on its own page

Question 12

+3 marksOne correct option

Consider the following HTML document.

html
<!DOCTYPE html>
<html>
<head>
    <style>
        span {
            background-color: yellow;
            color: red;
        }
        #id {
            border: 2px solid purple;
            color:blue ;
            display: inline-block;
        }
        .class {
            background-color: aqua;
            color: red;
            width:20%;
        }
    </style>
</head>
<body>
    <span class="class" id="id">SPAN</span>
    <span class="class" >SPAN</span>
    <span>SPAN</span>
</body>
</html>

How will the browser render above HTML file?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • A
Question 12 on its own page

Question 13

+3 marksOne correct option
  1. A

    1-c, 2-e, 3-d

  2. B

    1-c, 2-a, 3-b

  3. C

    1-c, 2-a, 3-d

  4. D

    1-a, 2-d, 3-e

Show answer

Correct answer

  • A

    1-c, 2-e, 3-d

Question 13 on its own page

Question 14

+3 marksOne correct option

Consider the following python code snippet app.py, the HTML files, base.html and home.html residing in “templates” folder.

app.py

python
from flask import Flask, render_template
app = Flask(__name__)
@app.route('/')
def home():
      return render_template('home.html')
app.run(debug=True)

home.html

html
{% extends "base.html" %}
{% block content %}
<p>MAD I</p>
<span>MAD II</span>
<p>DBMS</p>
{% endblock %}

base.html

html
<!DOCTYPE html>
<html lang="en">
<head>
      <title>IITM</title>
</head>
<body>
      <h2 style="color: violet;"> Diploma Courses </h2>
      {% block content %}
      {% endblock %}
</body>
</html>

What will be the rendered output for base URL if flask app is running locally on http://localhost:5000 ?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • D
Question 14 on its own page

Question 15

+3 marksOne correct option

Consider the below two python files code snippets app.py and test_app_route.py.

app.py

python
from flask import Flask
app = Flask(__name__)


@app.route("/greet/<string:name>")
def home(name):
   return "Hello, " + name


if __name__ == "__main__":
   app.run()

test_app_route.py:

python
import pytest, requests


@pytest.fixture
def get_response():
   resp = requests.get("http://127.0.0.1:5000/greet/IITM")
   return resp


def test_response(get_response):
   assert get_response.text == "Hello, iitm"

Assume that app.py and test_app_route.py are running on two different terminals. And also all required modules are installed. Which of the below statement(s) are True?

i) Executing the command pytest test_app_route.py on the terminal returns<br>=========== 1 passed =============

ii) Executing the command pytest test_app_route.py on the terminal returns<br>============ 1 failed ==============

iii) Executing the command pytest test_app_route.py on the terminal returns<br>============ 1 selected, 1 passed ==============

iv) Executing the command pytest test_app_route.py on the terminal returns<br>============ 1 deselected ==============

  1. A

    Only statement i is correct

  2. B

    Only statement ii is correct

  3. C

    Statements i and iii are correct

  4. D

    Statements ii and iv are correct

Show answer

Correct answer

  • B

    Only statement ii is correct

Question 15 on its own page

Question 16

+3 marksOne correct option

You have a DRAM module with bus width of 8 bits, clock speed of 1.4 GHz, and operating in DDR (double-data-rate or two values per clock cycle) mode. What is the maximum bandwidth (in Giga- bytes per second) of data transfer achievable with this module?

  1. A

    2.8

  2. B

    3.2

  3. C

    6.4

  4. D

    12.8

Show answer

Correct answer

  • A

    2.8

Question 16 on its own page

Question 17

+3 marksOne correct option

Consider the following flask resource created using flask_restful.

python
from flask import Flask, request
from flask_restful import Api, Resource, reqparse


app = Flask(__name__)
api = Api(app)


parser = reqparse.RequestParser()
parser.add_argument("val")


class RestApi(Resource):
    def post(self, val):
        arg1 = parser.parse_args()
        arg2 = request.args
        return {
                "Course_1": arg1["val"],
                "Course_2": arg2["val"],
                "Course_3": val
            }


api.add_resource(RestApi, "/api/courses/<val>")
app.run(debug = True)

If the application is running locally on http://127.0.0.1:5000, What will be the output on the terminal for the command:

bash
curl http://127.0.0.1:5000/api/courses/DBMS?val=JAVA -d
"{\"val\":\"PDSA\"}" -X POST -H "Content-Type: application/json"
  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • D
Question 17 on its own page

Question 18

+3 marksOne correct option

A flask application shown below is running locally on http://127.0.0.1:5000.

python
from flask import Flask, request, session, abort


app = Flask(__name__)
app.config['SECRET_KEY'] = "yekterces"


@app.route('/login')
def log_in():
    user = request.args['user']
    role = request.args['role'] if 'role' in request.args else
'general'
    session['user'], session['role'] = user, role
    return "Logged in successfully!"


@app.route('/home')
def land():
    if 'user' in session:
        if session['role'] == 'admin':
            return f"Welcome {session['user']}"
        return abort(401)
    return abort(404)


@app.route('/logout')
def log_out():
    session.pop('user', None)
    session.pop('role', None)
    return "Logged out sucessfully!"


app.run(debug=True)

If the application is running locally on http://127.0.0.1:5000, What will be the correct sequence of response status codes if the client visits the URLs one by one in the sequence given below?

  1. http://127.0.0.1:5000/home
  2. http://127.0.0.1:5000/login/admin
  3. http://127.0.0.1:5000/login?user=admin
  4. http://127.0.0.1:5000/home
  5. http://127.0.0.1:5000/logout
  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • B
Question 18 on its own page

Question 19

+3 marksOne correct option

Consider the following flask application.

Python file: app.py

python
from flask import Flask, render_template, request


app = Flask(__name__)


emp = {'admin':'manoj', 'user':'sumit'}


@app.route('/profile/<user>')
def profile(user):
    access = request.args.get('access')
    if emp[access] != user:
        return render_template("profile.html", user = user,
                                access = access, error = True)
    return render_template("profile.html", user = user,
                            access = access, error = False)


app.run()

Template file: profile.html

html
<body>
    <div>
        {% if error %}
            <h3>Hi {{user}}, {{access}} access denied</h3>
        {% else %}
            <h3>Hi {{user}}, you are logged in as {{access}}.</h3>
        {% endif %}
    </div>
</body>

If the application is running locally on http://127.0.0.1:5000, then what will be rendered by the browser for URL, http://127.0.0.1:5000/profile/sumit?access=admin ?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • D
Question 19 on its own page

Question 20

+4.5 marksOne correct option

A server, using the inbuilt http module of Python, is running for a directory My_app whose file structure and content of each file is given below.

Folder: My_app

text
My_app
   |_ home.html
   |_ index.html
   |_ main.html

File: home.html

html
<h1>Hello from Home!</h1>

File: index.html

html
<h1>Hello from Index!</h1>

File: main.html

html
<h1>Hello from Main!</h1>

What will be rendered by the browser for the URL: http://localhost:8000 assuming that 8000 is the port of connection?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • B
Question 20 on its own page

Question 21

+4.5 marksOne correct option

The lens of an HDD can read data on the rotating disk with the speed of 56,000 bits per second. The disk is designed such that 800 bits pass under the lens for every revolution of the disk, what should be the maximum speed of disk so that the lens does not miss any data?

  1. A

    70 RPM

  2. B

    100 RPM

  3. C

    4200 RPM

  4. D

    8000 RPM

Show answer

Correct answer

  • C

    4200 RPM

Question 21 on its own page

Question 22

+4.5 marksOne correct option

Consider a function remainder, and a set of test cases given below.

Filename: test_file.py

python
def remainder(numerator, denominator):
    rem = numerator % denominator
    return rem


def test_func0():
    assert remainder(5,7) == 5


def test_function1():
    assert remainder(20,4) == 0


def test_func2():
    assert remainder(31,8) == 6


def test_function3():
    assert remainder(19,3) == 1

What will be the output on the terminal for the command pytest test_file.py -k func ?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • C
Question 22 on its own page

Question 23

+4.5 marksOne correct option

Consider the following Python code snippet.

log.py

python
import logging
import sys


logging.basicConfig(level=logging.CRITICAL,
                    format='%(asctime)s - %(levelname)s - %(message)s')


def check_val(value):
    if value < 0:
        raise ValueError("Invalid value: Please enter a positive value.")
    else:
        logging.info("Value added: %s", value)


try:
    input_value = -int(sys.argv[1])
    check_val(input_value)
except ValueError as ve:
    logging.exception("Exception occurred: %s", str(ve))

What will be the output on the terminal for the command: python log.py 24 ?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • D
Question 23 on its own page

Question 24

+4.5 marksOne correct option

Consider the below flask application.

python
from flask_sqlalchemy import SQLAlchemy
from flask import Flask


app = Flask (__name__)
app.config ['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///testdb.sqlite3'
db = SQLAlchemy(app)
app.app_context().push()


class Material(db.Model):
   m_id = db.Column('m_id', db.Integer, primary_key = True)
   name = db.Column('name', db.String(100), unique = True)


db.create_all()


material1 = Material(name = 'Steel')
db.session.add(material1)
material2 = Material(name = 'Iron')
material3 = Material(name = 'Aluminium')
db.session.add(material2)
db.session.commit()


all_material = Material.query.all()
print([(x.m_id, x.name) for x in all_material])

If you run the flask application using a terminal. What will be the output in the terminal?

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answer

  • A
Question 24 on its own page

Question 25

+2 marksOne or more correct options

Consider the following flask application.

app.py

python
from flask import Flask, abort, request
app = Flask(__name__)


data = {"CS2001":"DBMS","CS2003":"MAD-I","CS2006":"MAD-II"}
@app.route('/login')
def login():
    username = request.args.get('uname')
    if username not in data:
        abort(400, "Bad Request: Invalid Username")
    return f'<h1>Welcome to {data[username]} course!</h1>'


app.run(debug=True)

Which of the following statements is/are true if the application is running locally on http://127.0.0.1:5000 ?

Select all that apply.

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answers

  • A
  • C
Question 25 on its own page

Question 26

+3 marksOne or more correct options

Which of the following statements is/are true about indexing?

Select all that apply.

  1. A

    Indexes are special lookup tables that the database search engine can use to speed up data retrieval.

  2. B

    Columns that are frequently manipulated should not be indexed.

  3. C

    Indexes enhance the performance even if the table is updated frequently.

  4. D

    Indexes should be avoided for tables that have frequent, large batch updates or insert operations.

Show answer

Correct answers

  • A

    Indexes are special lookup tables that the database search engine can use to speed up data retrieval.

  • B

    Columns that are frequently manipulated should not be indexed.

  • D

    Indexes should be avoided for tables that have frequent, large batch updates or insert operations.

Question 26 on its own page

Question 27

+3 marksOne or more correct options

Consider the following Model for Student.

python
class Student(db.Model):
      id = db.Column(db.Integer, primary_key=True)
      email = db.Column(db.String(100),unique=True,index=True)
      name = db.Column(db.String(100))
      password = db.Column(db.String(100))

Which of the following methods from the Flask-sqlalchemy query will behave the same as SQL query select * from Student where name='Ram'?

Select all that apply.

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answers

  • C
  • D
Question 27 on its own page

Question 28

+3 marksOne or more correct options

Consider the following flask application.

python
from flask import Flask, request
app = Flask(__name__)


@app.route('/home')
def home():
    var_a = request.args.get('method')
    if var_a == "GET":
        return "Hello from GET method"


    elif var_a == "POST":
        return "Hello from POST method"


    else:
        return "Invalid Method"


app.run(debug=True)

If the application is running locally on http://127.0.0.1:5000 then which of the following statements are correct?

Select all that apply.

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answers

  • A
  • D
Question 28 on its own page

Question 29

+4.5 marksOne or more correct options

Consider the following function to be tested and test functions given in the Python code snippet below.

test_file.py

python
import pytest


def square(x):
    sum = 0
    for counter in range(x):
      sum += x
      return sum


@pytest.mark.marker1
def testcase_1():
    assert square(10) == 100


@pytest.mark.marker2
def testcase_2():
    assert square(4) == 4


@pytest.mark.marker3
def testcase_3():
    assert square(5) == 25


@pytest.mark.marker4
def testcase_4():
    assert square(6) == 6

On running this file on the terminal using pytest, the summary of the output is;

text
========= 1 failed, 3 deselected, 4 warnings in 0.04s =========

What command will result into the outcome given above?

Select all that apply.

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answers

  • B
  • D
Question 29 on its own page

Question 30

+4.5 marksOne or more correct options

Consider the following flask application.

python
from flask import Flask, abort
app = Flask(__name__)
modules = ['python', 'react', 'node']


@app.route('/home/modules')
def all_modules():
    return f"<h3>List of modules: {modules}</h3>"


@app.route('/get/<string:module_1>/')
def get_module(module_1):
    if module_1 in modules:
        return f"<h3>One module found: {module_1}.</h3>"
    else:
        abort(400)


@app.errorhandler(400)
def module_error(error):
    return "<h3>Cannot find module</h3>"


@app.errorhandler(404)
def module_error(error):
    return "<h3>Incorrect Path</h3>"


app.run(debug=True)

If the application is running locally on http://127.0.0.1:5000, select the correct statement(s).

Select all that apply.

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answers

  • C
  • D
Question 30 on its own page

Question 31

+4.5 marksOne correct option

Based on the above data, answer the given subquestions.

At what distance (kms) should the router be placed from the client so that round-trip latency of the network remains as low as 150 milliseconds?

  1. A

    8000 kilometers

  2. B

    7500 kilometers

  3. C

    4500 kilometers

  4. D

    3000 kilometers

Show answer

Correct answer

  • C

    4500 kilometers

Question 31 on its own page

Question 32

+3 marksOne correct option

Based on the above data, answer the given subquestions.

What will be the round-trip latency (milliseconds) of the network if the router is placed at exactly midway from the client and the server?

  1. A

    45

  2. B

    90

  3. C

    180

  4. D

    270

Show answer

Correct answer

  • C

    180

Question 32 on its own page