Cloud Management and Performance Prediction
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Questions and Answers

What unique interface does Nimbus provide that distinguishes it from other open-source VI managers?

  • WSRF interface (correct)
  • REST interface
  • EC2-compatible interface
  • SOAP interface

Which backend services are supported by Nimbus for spawning VMs?

  • PBS and SGE (correct)
  • KVM and VMWare
  • Amazon EC2 and OpenNebula
  • Xen and Docker

What type of storage devices does Eucalyptus provide that are compatible with Amazon EBS?

  • VMWare storage devices
  • Virtual storage devices (correct)
  • Local disk storage devices
  • NFS storage devices

Which programming APIs does OpenNebula offer for public access?

<p>XML-RPC and OpenNebula Cloud API (D)</p> Signup and view all the answers

What is a key feature of OpenNebula's architecture?

<p>Modular architecture with pluggable components (C)</p> Signup and view all the answers

What does cloud computing primarily offer?

<p>Computing, storage, and software as a service (C)</p> Signup and view all the answers

Which characteristic of cloud computing emphasizes its resource allocation flexibility?

<p>Dynamic reconfiguration to adjust to variable loads (B)</p> Signup and view all the answers

According to NIST, what is a key aspect of cloud service models?

<p>On-demand network access to a shared pool of resources (D)</p> Signup and view all the answers

What is meant by 'elasticity' in cloud computing?

<p>Adjustable infrastructure capacity based on needs (A)</p> Signup and view all the answers

What does a pay-per-use model in cloud computing signify?

<p>Charges based on the amount of resources consumed (D)</p> Signup and view all the answers

What is the illusion referred to in cloud computing's key characteristics?

<p>Unlimited computing resources availability (C)</p> Signup and view all the answers

Which organization defines cloud computing as the pay-per-use model for network access to resources?

<p>National Institute of Standards and Technology (NIST) (B)</p> Signup and view all the answers

What best describes the resource availability in cloud computing?

<p>Resources can be rapidly provisioned and released (C)</p> Signup and view all the answers

What advantage do fiber-optics networks provide for businesses?

<p>Faster and more reliable computing services (D)</p> Signup and view all the answers

What is the primary purpose of a Service-Oriented Architecture (SOA)?

<p>To provide loosely coupled and standards-based computing (C)</p> Signup and view all the answers

What enables applications to interact across different messaging platforms in a Web Services framework?

<p>Standardized Web Services (WS) open standards (C)</p> Signup and view all the answers

Which element is NOT characteristic of services in a Service-Oriented Architecture (SOA)?

<p>They are tightly coupled with other services (B)</p> Signup and view all the answers

What technology underpins the standards for Web Services?

<p>HTTP and XML (A)</p> Signup and view all the answers

Which of the following describes the function of a service in a SOA?

<p>It can be accessed on-demand in a uniform way (C)</p> Signup and view all the answers

What is a major benefit of economies of scale in computing services?

<p>Reduced costs for service providers (A)</p> Signup and view all the answers

What is a key feature of services in a Web Services stack?

<p>They provide standardized means for service discovery (B)</p> Signup and view all the answers

What was a significant limitation of traditional metrics in grid resource management?

<p>They failed to account for urgent work requirements. (B)</p> Signup and view all the answers

In utility computing environments, what does the 'utility' value represent?

<p>A valuation capturing various QoS constraints. (B)</p> Signup and view all the answers

What may service providers prioritize to maximize their utility?

<p>High yield user jobs for greater profit. (A)</p> Signup and view all the answers

What role does the virtual machine monitor (VMM) play in hardware virtualization?

<p>It mediates access to physical hardware for guest operating systems. (C)</p> Signup and view all the answers

Which of the following technologies has contributed to the adoption of virtualization in server systems?

<p>Multi-core chips. (D)</p> Signup and view all the answers

Why is hardware virtualization considered beneficial for data centers?

<p>It simplifies data center maintenance and resource sharing. (B)</p> Signup and view all the answers

What is a potential outcome of viewing shared systems as a marketplace?

<p>Users will compete for resources based on job value. (B)</p> Signup and view all the answers

What is meant by live migration of VMs in regards to virtualization?

<p>Transferring a virtual machine from one server to another without downtime. (C)</p> Signup and view all the answers

Which section covers the background concept of organizational readiness?

<p>Section 22.2 (B)</p> Signup and view all the answers

What is the focus of Section 19.4 in the context of online gaming?

<p>Modeling expectations and performance (D)</p> Signup and view all the answers

In which section is data privacy and security issues specifically addressed?

<p>Section 24.2 (B)</p> Signup and view all the answers

Which section outlines the principles of best practices in architecting cloud applications?

<p>Section 18.4 (B)</p> Signup and view all the answers

What concept is introduced in Section 21.3 regarding cloud mashups?

<p>Realizing resource mashups (A)</p> Signup and view all the answers

Which section discusses the challenges of data security in the cloud?

<p>Section 23.4 (B)</p> Signup and view all the answers

What is the main focus of Section 20.3?

<p>MetaCDN technology (D)</p> Signup and view all the answers

Which section deals with common change management models?

<p>Section 22.4 (C)</p> Signup and view all the answers

In which section can one find information about the cloud service life cycle?

<p>Section 25.4 (B)</p> Signup and view all the answers

What aspect of governance is addressed in Part VI?

<p>Change management and readiness (D)</p> Signup and view all the answers

What subject is covered in Section 18.7?

<p>Future research directions (A)</p> Signup and view all the answers

What is primarily explored in Section 25.5?

<p>Production readiness for services (D)</p> Signup and view all the answers

Which section includes a case study titled 'GrepTheWeb'?

<p>Section 18.5 (B)</p> Signup and view all the answers

What is the main focus of Section 17.5?

<p>Summary and conclusions (B)</p> Signup and view all the answers

Study Notes

Cloud Computing Overview

  • Cloud computing delivers computing, storage, and software as services, making it a foundational concept in ICT.
  • It consists of interconnected, virtualized systems dynamically provisioned as unified computing resources guided by Service Level Agreements (SLAs).

Key Characteristics of Cloud Computing

  • Provides an illusion of infinite resources with flexible scalability.
  • Eliminates upfront commitments, allowing clients to pay only for what they use.
  • Ensures rapid provisioning and release of computing resources with minimal management intervention.

Definitions and Frameworks

  • NIST defines cloud computing as a pay-per-use model for on-demand network access to a shared pool of configurable resources.
  • Service-Oriented Architecture (SOA) facilitates loosely coupled service integration, promoting efficient distributed computing.

Web Services and Integration

  • Web services enable applications to communicate across different platforms, promoting software integration.
  • A rich stack of web service standards exists, allowing for the orchestration and management of services to meet business needs.

Resource Management and Utility Computing

  • Utility computing allows users to assign a utility value to jobs, reflecting their willingness to pay based on QoS constraints.
  • Service providers can prioritize jobs based on perceived utility, creating a competitive resource marketplace.

Hardware Virtualization

  • Data centers utilize hardware virtualization to optimize resource sharing and operational efficiency.
  • Virtual Machine Monitors (VMM) or hypervisors manage access to physical hardware, enabling multiple operating systems to operate on a single platform.

Prominent Cloud Management Solutions

  • Eucalyptus offers features for virtual infrastructure management with compatibility for EC2 and S3 interfaces.
  • Nimbus enhances cloud management through the Globus framework, providing a WSRF interface and support for local resource management.
  • OpenNebula is noted for its comprehensive features, supporting both local and public cloud infrastructures with a modular architecture for flexibility.

Change Management in Cloud Computing

  • Organizational readiness and change management are critical for adopting cloud technologies.
  • Several change management models exist to assist organizations in navigating transitions in the cloud age.

Data Security Concerns

  • Data security remains a significant challenge in cloud computing, requiring careful consideration of privacy, risk, and identity management.
  • Legal frameworks surrounding data privacy, security, and jurisdictional challenges are essential for cloud computing users to understand.

Production Readiness for Cloud Services

  • Achieving production readiness involves assessing service management, consumer relationships, and the full service lifecycle to ensure dependable operations.

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Description

Explore the principles of SLA management in cloud computing, including types of SLAs, their life cycles, and automated policy-based management. In addition, understand performance prediction for high-performance computing (HPC) in cloud environments. This quiz touches on both traditional approaches and innovative strategies.

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