Cloud Computing Week 10 NPTEL Assignment Answers 2025

NPTEL Cloud Computing Week 10 Assignment Answers 2024

1. Post-copy and Pre-copy migration approaches are employed in
a. Live Migration process
b. Non-live Migration process
c. Hybrid Migration process
d. None of these
Answer: a
Explanation: Post-copy and pre-copy are two techniques used in live migration of virtual machines. In pre-copy, memory pages are copied to the target while the VM is still running, and in post-copy, the VM is suspended briefly, moved, and resumes running while remaining pages are fetched.

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2. Kubernetes operates at the hardware level.
a. True
b. False
Answer: b
Explanation: Kubernetes operates at the application and container orchestration level, not at the hardware level. It manages containers, not physical machines.

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3. What is(are) the key advantage(s) of Docker?
a. Facilitating microservices
b. Modeling networks
c. Packaging software
d. None of these
Answer: a, b, c
Explanation: Docker allows applications to be broken into microservices, supports network modeling between containers, and is widely used for packaging software with all its dependencies into containers.

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4. Which of the following statements is most appropriate about Docker?
a. Docker is a platform that allows to build and run but not ship apps.
b. Docker is a platform that allows to build and ship but not to run apps.
c. Docker is a platform that allows to build, ship, and run apps.
d. Docker is a platform that only allows to ship and run but not to build apps.
Answer: c
Explanation: Docker is an end-to-end platform that allows developers to build, ship, and run applications using containers.

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5. In Docker utility, ________________is a collection of filesystem layers and some metadata that, if taken together, can be spun up as Docker containers.
a. Operating System
b. Microservice
c. Virtual Machine
d. Image
Answer: d
Explanation: A Docker image is a packaged snapshot of a container that includes all dependencies and configurations needed to run an application.

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6. Containers are similar to VMs but they have unrelaxed isolation properties to share the operating system among the applications.
a. True
b. False
Answer: b
Explanation: Containers have relaxed isolation, meaning they share the same OS kernel but remain logically isolated. This is what makes them lightweight compared to VMs.

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7. Choose the most appropriate option.
Statement 1: Container is a lightweight virtualization technique.
Statement 2: Container contains the code and all its dependencies.
a. Only statement 1 is true
b. Only statement 2 is true
c. Both statement 1 and 2 are true
d. Both the statements are false
Answer: c
Explanation: Containers are lightweight because they share the host OS and are faster than VMs. They also include the application code and its dependencies, ensuring consistent execution.

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8. Private Docker registry is a service that stores Docker images.
a. True
b. False
Answer: a
Explanation: A Private Docker registry allows teams or organizations to store and manage Docker images internally, enhancing security and control.

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9. Docker builds offer enhanced reproducibility and replicability compared to conventional software development approaches.
a. True
b. False
Answer: a
Explanation: Docker images are portable and consistent, enabling the same application to run identically in different environments, which improves reproducibility and replicability.

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10. Given the VM memory size of 1024 GB and the transmission rate of 16 MB/sec
What are the total migration time and downtime for non-live VM migration? Choose the most appropriate option.
a. 20 hours, 25 hours
b. 18 hours, 18 hours
c. 16 hours, 16 hours
d. 24 hours, 20 hours
Answer: b
Explanation: In non-live migration, the VM is stopped and then the memory is transferred.
1024 GB = 1024 × 1024 MB = 1,048,576 MB
Time = 1,048,576 ÷ 16 = 65,536 seconds = approx 18.2 hours
So, both migration time and downtime are around 18 hours.