NPTEL Cloud Computing Week 8 Assignment Answers 2024 (July-October)

Week 08: Assignment 08

1) A lot of platform’s basic building blocks is/are (choose the correct option(s)):

• Answer: Containers

  Reason: Containers are fundamental building blocks for platform services in cloud and distributed systems. They provide a standardized environment for software to run consistently across various environments.

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2) ________ is used to delete a local image.

• Answer: Docker rmi

  Reason: In Docker, the docker rmi command is used to remove one or more images from the local Docker environment. It is specifically designed for deleting images to free up space.

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3) Docker Hub is a registry used to host various docker images.

• Answer: True

  Reason: Docker Hub is a central registry for hosting and sharing container images. Developers use it to store images and make them available for use by others.

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4) _______ enables different networks, spreads in a huge geographical area to connect together and be employed simultaneously by multiple users on demand.

• Answer: Sensor Cloud

  Reason: Sensor Cloud is a cloud computing service where sensor networks are connected over large geographical areas, allowing users to access and use sensor data on-demand from multiple sources.

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5) Virtual machines get virtual access to host resources through a _______

• Answer: Both a and b (Containers and Hypervisor)

  Reason: Virtual machines can access host resources either through hypervisors (which manage VMs on physical hardware) or containers (which run on a host OS without needing a separate hypervisor layer).

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6) Vehicles providing their networking and data processing capabilities to other vehicles through the cloud comes under which service of IoT-based Vehicular Data Clouds.

• Answer: IaaS

  Reason: Infrastructure as a Service (IaaS) in Vehicular Data Clouds provides computing resources, networking, and data processing for connected vehicles to share data with other vehicles.

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7) Sensor data can be easily shared by different groups of users without any extra effort or measure.

• Answer: False

  Reason: Sharing sensor data among different user groups often requires additional efforts such as data access control, privacy policies, and specific data-sharing frameworks.

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8) Container is a complete time instance of an image.

• Answer: True

  Reason: A container is an instance of a Docker image running in an isolated environment. Once a container is launched, it operates as an instance of its base image.

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9) In the context of Green Cloud Computing, the Power Usage Effectiveness is defined as

• Answer: Overall Power / Power Delivered

  Reason: Power Usage Effectiveness (PUE) is a metric used to determine the energy efficiency of a data center. It is calculated as the ratio of total facility energy consumption to the energy used for computing (power delivered).

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10) Statement 1: Sensor-Cloud proxy exposes sensor resources as cloud services.

Statement 2: Sensor network is still managed from the Sensor-Cloud Interface via Sensor Network Proxy.

• Answer: Both statements are True

  Reason: In Sensor-Cloud systems, sensor resources are managed and exposed through cloud services using proxies, which allow seamless access to sensor data while ensuring management through the sensor network interface.