Cloud Computing Quiz
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Questions and Answers

What is an essential aspect of IaaS that contributes to its scalability?

  • Distributed computing
  • Hardware virtualization
  • Dynamic provisioning (correct)
  • Fault-tolerant systems

    • What feature of IaaS allows users to customize their computing resources?

  • Virtualization
  • Heterogeneous physical resources
  • Customizable shared resource (correct)
  • Multi-core processors

    • What is a key benefit of IaaS in terms of cost-effectiveness?

  • Reduced hardware costs
  • Increased maintenance costs
  • Improved resource utilization (correct)
  • Enhanced security features

    • What aspect of IaaS reduces maintenance efforts for users?

    <p>Resource sharing and consolidation</p> Signup and view all the answers

    What is a major advantage of IaaS in terms of resource utilization?

    <p>Higher utilization rates</p> Signup and view all the answers

    What is the primary goal of IaaS in terms of resource utilization?

    <p>To increase resource utilization</p> Signup and view all the answers

    What is one of the benefits of cloud computing in terms of maintenance?

    <p>The cloud vendor is responsible for software updates and security patches</p> Signup and view all the answers

    What is one of the benefits of cloud computing in terms of resource utilization?

    <p>A large number of resources are consolidated to achieve better utilization</p> Signup and view all the answers

    What is one of the benefits of cloud computing in terms of availability?

    <p>Access to software, platform, and infrastructure is available from anywhere at any time</p> Signup and view all the answers

    What is one of the benefits of cloud computing in terms of reliability?

    <p>The system's fault tolerance is managed by the cloud provider</p> Signup and view all the answers

    What is one of the benefits of cloud computing in terms of cost-effectiveness?

    <p>The client can reduce the size of their IT department</p> Signup and view all the answers

    What is a key benefit of cloud computing in terms of resource utilization?

    <p>Reduced power usage</p> Signup and view all the answers

    What is a characteristic of a private cloud?

    <p>For enterprises/corporations with large scale IT</p> Signup and view all the answers

    What is a key feature of the MapReduce programming model?

    <p>Functional programming that is easily parallelizable</p> Signup and view all the answers

    What is a benefit of using a hybrid cloud?

    <p>Extension of private cloud to public cloud vendors</p> Signup and view all the answers

    What is a key feature of HDFS?

    <p>Assumes commodity hardware</p> Signup and view all the answers

    What is a characteristic of a public cloud?

    <p>Open market for on-demand computing and IT resources</p> Signup and view all the answers

    What is a benefit of using Apache Hadoop?

    <p>Automatic detection and restarting of failing nodes</p> Signup and view all the answers

    What is a key feature of cloud computing in terms of maintenance?

    <p>Easier management of IT resources</p> Signup and view all the answers

    What is a key benefit of using cloud computing in terms of cost-effectiveness?

    <p>Reduced costs due to higher server utilization</p> Signup and view all the answers

    What is a key feature of cloud computing in terms of customization?

    <p>Easy to manage and customize IT resources</p> Signup and view all the answers

    Study Notes

    Cloud Computing Overview

    • Cloud computing is categorized into three main service models: IaaS (Infrastructure as a Service), PaaS (Platform as a Service), and SaaS (Software as a Service).
    • Virtualization technology significantly enhances the efficiency and effectiveness of IaaS by allowing multiple virtual machines (VMs) to run on single hardware resources.
    • Dynamic provisioning allows for real-time allocation of resources in cloud environments.

    Virtualization and Resource Management

    • Multi-core processors enable the creation of multiple VMs efficiently.
    • Virtualization leads to resource consolidation, enhancing the utilization of CPU cycles, storage, and network bandwidth.
    • The physical layer comprises various components, including virtual servers, storage, networks, and middleware.

    Types of Cloud Offerings

    • Services can be delivered in various forms, labeled as Everything as a Service (XaaS), including:
      • Desktop as a Service (DaaS)
      • Communication as a Service (CaaS)
      • Virtualization as a Service (VaaS)
      • Hardware as a Service (HaaS)

    Benefits of Cloud Computing

    • Reduces the need for extensive IT departments and shifts maintenance responsibilities to cloud vendors, including software updates and security.
    • Ensures high availability, allowing access to resources from any internet-connected device, enhancing reliability through fault tolerance managed by cloud providers.
    • Minimizes CO2 footprint due to resource consolidation and higher utilization rates.

    Challenges in Cloud Computing

    • Security and privacy concerns regarding sensitive data.
    • Issues related to vendor lock-in and dependency on network connectivity.
    • Migration complexities when transitioning to cloud services.

    Types of Clouds

    • Public Cloud: Open market for shared resources, but concerns exist regarding SLA, reliability, and security.
    • Private Cloud: Dedicated for individual enterprises, providing tailored IT solutions.
    • Hybrid Cloud: Combines public and private clouds, allowing resource expansion via public services when needed.

    Application and Infrastructure Characteristics

    • Cloud infrastructure supports large-scale, data-centric applications that are elastic, easy to manage, and fault-tolerant.
    • Technologies such as MapReduce and Apache Hadoop are used for processing distributed data.

    MapReduce and Apache Hadoop

    • MapReduce simplifies the development of applications that handle large datasets through a two-phase model: Map (processes data) and Reduce (aggregates results).
    • Hadoop provides an open-source framework for distributed computing, automatically managing the logistics of data processing.
    • HDFS (Hadoop Distributed File System) offers a scalable and fault-tolerant solution for managing vast amounts of data across many nodes.

    HDFS and Data Management

    • Supports a single namespace for the entire data cluster and utilizes a write-once, read-many access model.
    • Files are split into blocks (typically 128 MB) and replicated across multiple nodes for failover protection.
    • Clients directly access data from DataNodes, allowing efficient location identification and retrieval.

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    Description

    This quiz covers the basics of cloud computing, including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS), as well as virtualization technology and granularity of virtual machines.

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