Cloud Computing Week 7 NPTEL Assignment Answers 2025

NPTEL Cloud Computing Week 7 Assignment Answers 2024

Q1. Which of the following is/are key requirement(s) of Mobile Cloud Computing?

• A) Simple APIs offering access to mobile services
• B) Internet access to remotely stored applications in the cloud
• C) Sophisticated APIs requiring knowledge of underlying network technologies
• D) Web interface

✅ Answer :- a, b, d
✏️ Explanation: Mobile Cloud Computing requires simple APIs, web interfaces, and cloud access. Sophisticated APIs (C) reduce usability.

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Q2. In Mobile Cloud Computing, the synchronizer module collects results of split execution and combines them, and makes the execution details transparent to the user.

• A) TRUE
• B) FALSE

✅ Answer :- a
✏️ Explanation: The synchronizer ensures that split task execution and result aggregation happen seamlessly and transparently for the user.

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Q3. Geographical distribution of server nodes is ____________ in Fog Computing ___________ in Cloud Computing.

• A) Distributed, Centralized
• B) Distributed, Distributed
• C) Centralized, Distributed
• D) Centralized, Centralized

✅ Answer :- a
✏️ Explanation: Fog computing uses distributed nodes close to users; cloud computing is typically centralized in data centers.

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Q4. Formulate the amount of energy saved (E) during offloading for the given data.
Energy cost/second while when mobile phone is doing computation = C1
Energy cost/second while when mobile phone is idle = C2
Energy cost/second while when mobile phone is transmitting the data = C3
Speed of cloud to compute k instructions = Sc
Speed of mobile to compute k instructions = Sm
Data need to transmit = D
Bandwidth of the wireless Internet = B

A) E = C2k/Sm) – C1(k/Sc) – C3(D/B) |
B) E = C1(k/Sm) – C2(k/Sc) – C3(D/B) |
C) E = C3(k/Sm) – C2(k/Sc) – C1(D/B) |
D) E = C1(k/Sc) – C2(k/Sm) – C3(D/B) |

✅ Answer :- b
✏️ Explanation:
E=C1×kSm−C2×kSc−C3×DBE = C1 \times \frac{k}{Sm} – C2 \times \frac{k}{Sc} – C3 \times \frac{D}{B}E=C1×Smk​−C2×Sck​−C3×BD​
This compares energy cost for local processing vs offloading.

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Q5. Which of the following is/are not a benefit of Fog computing?

• A) Location awareness
• B) Higher latency as compared to cloud computing
• C) Improved QoS
• D) Man-in-the-middle-attack

✅ Answer :- b, d
✏️ Explanation: Fog computing reduces latency (so B is false), and security threats like man-in-the-middle (D) are risks, not benefits.

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Q6. Population of a city/town is a static geographic information.

• A) TRUE
• B) FALSE

✅ Answer :- b
✏️ Explanation: Population changes over time, so it’s dynamic geographical data, not static.

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Q7. Which of the following statement(s) is/are FALSE about Fog Computing?

• A) Intelligence is brought to the cloud from the end users.
• B) Fog computing is used for real-time applications
• C) Fog nodes’ response time is higher than cloud server
• D) Network routers, WiFi Gateways will be capable of running applications

✅ Answer :- a, c
✏️ Explanation:

• (A) is false: Fog brings intelligence closer to the edge, not to the cloud.
• (C) is false: Fog nodes provide lower latency and faster response than cloud servers.

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Q8. Fog Computing has _________ number of server nodes and has _________ delay jitter compared to Cloud Computing.

• A) small, higher
• B) large, higher
• C) small, lower
• D) large, lower

✅ Answer :- d
✏️ Explanation: Fog computing has many small nodes (large in count) and less delay jitter due to proximity to users.

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Q9. In Geospatial Cloud Models, which level of interoperability ensures the ability to “consume” the information?

• A) Service Level Interoperability
• B) Security Level Interoperability
• C) Data Level Interoperability
• D) None of the above

✅ Answer :- c
✏️ Explanation: Data Level Interoperability ensures different systems can read, process, and use the same data meaningfully.

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Q10. Consider the statements and select the correct answer:

Statement I: In Geospatial cloud, data services in cloud can be run through IaaS service model.
Statement II: Web service is the key technology to provide Geospatial services.

• A) Statement 1 is correct but Statement 2 is incorrect
• B) Statement 2 is correct but Statement 1 is incorrect
• C) Both the statements are correct
• D) Both the statements are incorrect

✅ Answer :- b
✏️ Explanation:

• Statement I is incorrect: Geospatial services are mostly deployed over PaaS or SaaS, not IaaS.
• Statement II is correct: Web services are core to Geospatial cloud platforms for interoperability and access.