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MAD II · Web storage, fetch & PWAs

11 questions · 30 marks · 5 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Modern Application Development II

Web storage, fetch & PWAs

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

End Term · 31 Aug 2025 (FN)End Term

Q1MCQ4.5 Marks·Choose one option
Asked 2 times Key ↓
Consider the following JavaScript program that demonstrates web storage operations:
1. A
2. B
3. C
4. D

End Term · 31 Aug 2025 (AN)End Term

Q2MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D

Quiz 2 · 3 Aug 2025 (AN)Quiz 2

Q3MCQ2 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q4MSQ2 Marks·Choose all correct options
Key ↓
Which of the following statement(s) about Web Storage APIs is/are correct?
1. A
2. B
3. C
4. D
Q5MSQ2 Marks·Choose all correct options
Key ↓
Which of the following statement(s) is/are true regarding Single Page Applications (SPA) and Progressive Web Apps (PWA)?
1. ASPAs use client-side routing to dynamically update content without full page reloads.
2. BPWAs can work offline using service workers.
3. CSPAs always require a server-side language to handle routing.
4. DPWAs can be added to a device’s home screen like native apps.

End Term · 22 Dec 2024 (FN)End Term

Q6MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A[]
2. B['Laptop', ‘Laptop’, ‘Laptop’]
3. C[{ id: 1, name: 'Laptop' }]
4. D[undefined]
Q7MCQ2 Marks·Choose one option
Asked 2 times Key ↓
Which of the following statements is FALSE?
1. ACache-Control: no-store prevents caching
2. BETag helps validate cache freshness
3. CData stored in sessionStorage remains available even after the browser is closed and reopened.
4. DlocalStorage has larger storage limit than cookies

End Term · 22 Dec 2024 (AN)End Term

Q8MCQ3 Marks·Choose one option
Key ↓
1. AThe new value will be stored in session storage, and the “userName” data property will be updated.
2. BThe new value will be stored in session storage, but the “userName” data property will be reset to an empty string on page refresh.
3. CThe “userName” data property will be reset to an empty string, and the session storage value will be ignored on refresh.
4. DThe “userName” data property will not be updated in session storage because session storage doesn't persist across refreshes.
Q9MCQ2 Marks·Choose one option
Asked 2 times Key ↓
Which of the following statements is FALSE?
1. ACache-Control: no-store prevents caching
2. BData stored in sessionStorage remains available even after the browser is closed and reopened.
3. CETag helps validate cache freshness
4. DlocalStorage has larger storage limit than cookies
Q10MCQ4.5 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Q11MSQ2 Marks·Choose all correct options
Key ↓
Which of the following statement(s) is/are correct regarding the behavior of local storage in Vue.js applications?
1. AThe local storage data persists even after the browser is closed and reopened.
2. BThe local storage data is automatically cleared every session.
3. CThe local storage can only store strings, and storing objects requires manual serialization and de-serialization.
4. DVue's reactivity system automatically updates the local storage when bound to a Vue data property.

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1A

Q2D

Q3A

Q4A, B, C

Q5A, B, D

Q6B

Q7C

Q8A

Q9B

Q10D

Q11A, C

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