Cloud Computing Week 7 NPTEL Assignment Answers 2025

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✅ Subject: Cyber Security and Privacy
📅 Week: 7
🎯 Session: NPTEL 2025 July-October
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NPTEL Cloud Computing Week 7 Assignment Answers 2025

1. Which of the following is a major challenge in Mobile Cloud Computing?

A) Low demand for mobile applications
B) Unlimited local resources in mobile devices
C) Network latency and dependency
D) Elimination of mobile Internet services

Answer : See Answers

2. When MCC enables a user to access mobile apps and data from anywhere, it reflects which
cloud characteristic?

A) Elasticity
B) Location independence
C) On-demand self-service
D) Resource pooling

Answer :

3. In dynamic routine offloading, the decision of whether to execute a task locally or in the
cloud depends primarily on:

A) Fixed pre-programmed instructions in the mobile device
B) Real-time context parameters such as network bandwidth, latency, and device battery level
C) The number of installed mobile applications
D) Cloud provider’s billing cycle

Answer :

4. The main purpose of a cloudlet in Mobile Cloud Computing is to:

A) Act as a small-scale data center close to mobile users
B) Replace all cloud servers globally
C) Increase the storage capacity of mobile devices directly
D) Remove the need for wireless connectivity

Answer :

5. Which of the following is a major security concern in Mobile Cloud Computing (MCC)?

A) Unlimited battery consumption
B) Data confidentiality and privacy during transmission
C) Increasing device size
D) Lack of mobile applications

Answer :

6. Which of the following is a key advantage of Fog Computing over Cloud Computing?

A) Higher centralization of resources
B) Better support for real-time applications like healthcare monitoring and autonomous vehicles
C) Infinite storage capacity
D) Removal of network infrastructure

Answer : See Answers

7. In Fog Computing, data is usually processed at

A) Central cloud data centers only
B)Satellites orbiting the earth
C) Only on end-user mobile devices
D) Edge devices or intermediate nodes such as routers, gateways, or local servers

Answer :

8. Statement 1: Geospatial Cloud Computing enables large-scale spatial data analysis by leveraging
distributed computing resources.
Statement 2: Traditional desktop GIS systems alone are sufficient to handle petabyte-scale remote
sensing data efficiently.

A) Both Statement 1 and Statement 2 are true, and Statement 2 is the correct explanation of
Statement 1
B) Both Statement 1 and Statement 2 are true, but Statement 2 is not the correct explanation of
Statement 1
C) Statement 1 is true, but Statement 2 is false
D) Statement 1 is false, but Statement 2 is true

Answer :

9. In Geospatial Cloud Computing, the biggest challenge when processing satellite imagery and
spatial big data is:

A) Lack of interest in geospatial data
B) High computational demand and storage requirements for large-scale raster/vector datasets
C) The inability of GIS tools to run on cloud platforms
D) Elimination of spatial data standards like OGC

Answer :

10. In an loT-enabled smart healthcare system, which combination is most critical to ensure real-time patient monitoring with minimal delay?

A) Cloud computing + Batch processing
B) Fog/Edge computing + Low-latency communication (e.g., 5G)
C) Local device storage + Periodic manual uploads
D) Satellite communication + High latency networks

Answer :  See Answers

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.