Ajax, IoT, Agile, and Refactoring Overview
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Ajax, IoT, Agile, and Refactoring Overview

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Questions and Answers

What is the main function of the Internet Protocol (IP)?

  • To create multimediabased documents for the web.
  • To develop a network of networks allowing different systems to communicate. (correct)
  • To ensure secure transmissions of data over the Internet.
  • To provide the hardware necessary for Internet connectivity.

    • Which technology did Tim Berners-Lee develop for sharing information on the web?

  • Internet Protocol (IP)
  • Ajax Technology
  • JavaScript
  • HyperText Transfer Protocol (HTTP) (correct)

    • What is a key goal of the World Wide Web Consortium (W3C)?

  • To create exclusive content for web technologies.
  • To develop hardware to improve Internet speeds.
  • To make the web accessible to everyone regardless of disabilities. (correct)
  • To restrict access to web services based on geography.

    • What does the term 'mashups' refer to in web services?

    <p>Combining web services from different sources to develop applications.</p> Signup and view all the answers

    Which of the following does NOT describe the World Wide Web?

    <p>An application for data encryption over Internet.</p> Signup and view all the answers

    What structural component of Internet communication is represented by TCP?

    <p>A protocol for sequentially numbered data packets.</p> Signup and view all the answers

    How has bandwidth on the Internet changed over time?

    <p>It has increased tremendously while hardware costs have dropped.</p> Signup and view all the answers

    What is a characteristic feature of web services?

    <p>They allow software components to communicate over the Internet.</p> Signup and view all the answers

    What is a key characteristic of cloud computing?

    <p>Resources can be adjusted based on demand.</p> Signup and view all the answers

    What defines a 'thing' in the context of the Internet of Things?

    <p>Any object with an IP address capable of sending data</p> Signup and view all the answers

    Which phase follows the alpha phase in software development?

    <p>Beta version</p> Signup and view all the answers

    What distinguishes a release candidate from a beta version?

    <p>Release candidates are typically bug-free.</p> Signup and view all the answers

    Which of the following technologies helps applications perform similarly to desktop applications by minimizing transmission delays?

    <p>Ajax</p> Signup and view all the answers

    What does the acronym LAMP stand for in open-source web development technologies?

    <p>Linux, Apache, MySQL, PHP</p> Signup and view all the answers

    Which of the following does not qualify as a PaaS provider?

    <p>Salesforce.com</p> Signup and view all the answers

    Which of the following best describes Refactoring in software development?

    <p>Reworking code for clarity and maintainability while maintaining functionality</p> Signup and view all the answers

    Which of the following is NOT part of the LAMP stack?

    <p>JavaScript</p> Signup and view all the answers

    What is a primary benefit of using Design Patterns in software development?

    <p>Promotes the reuse of proven architectures for better quality software</p> Signup and view all the answers

    What does the final release of software signify?

    <p>All reported bugs have been addressed.</p> Signup and view all the answers

    Which statement accurately describes Software as a Service (SaaS)?

    <p>The software runs on servers elsewhere, accessible via the Internet.</p> Signup and view all the answers

    Why is cloud computing considered more cost-effective than traditional computing solutions?

    <p>It shifts the management burden to the service provider.</p> Signup and view all the answers

    What is the primary purpose of a Software Development Kit (SDK)?

    <p>To develop and program applications.</p> Signup and view all the answers

    What is a characteristic of the alpha version of software?

    <p>It is often buggy and incomplete.</p> Signup and view all the answers

    Which feature of AJAX technology significantly improves user experience in web applications?

    <p>Asynchronous data loading that minimizes delays</p> Signup and view all the answers

    Study Notes

    Ajax Technology

    • Enables internet-based applications to perform like desktop applications.
    • It solves transmission delays experienced by traditional applications due to data transfer between computer and server.
    • Applications like Google Maps achieve excellent performance and resemble the look and feel of desktop applications due to Ajax technology.

    Internet of Things

    • Any object with an IP address capable of sending data automatically over the internet is considered a "thing."
    • Examples include: cars with transponders, implanted heart monitors, smart meters, mobile apps tracking location, and smart devices.

    Agile Software Development

    • A set of methodologies aimed at faster software implementations and resource optimization.
    • Emphasizes iterative development and continuous feedback.

    Refactoring

    • Reworking software to improve clarity and maintainability without compromising correctness and functionality.
    • Widely used with agile development methodologies.
    • Many IDEs offer built-in refactoring tools for automated reworking.

    Design Patterns

    • Proven architectures for constructing flexible and maintainable object-oriented software.
    • Encourages reuse of recurring patterns to improve software quality, reduce development time, and minimize costs.

    LAMP

    • An acronym for Linux, Apache, MySQL, and PHP.
    • A popular open-source technology stack for cost-efficient web application development.
    • Equivalent for Windows is WAMP: Windows, Apache, MySQL, and PHP.

    Software as a Service (SaaS)

    • Software runs on servers accessible via the internet.
    • Updates to the server benefit all clients globally without local installation.
    • Examples include Salesforce.com, Google services, Microsoft Office Live, and Windows Live.

    Platform as a Service (PaaS)

    • Provides a computing platform for developing and running web applications.
    • Users don't need to install tools locally, instead accessing them through the web.
    • Providers include Google App Engine, Amazon EC2, and Windows Azure™.

    Cloud Computing

    • Utilizes data storage and processing on remote servers accessed via the internet.
    • Enables flexible scaling of resources to meet demands and optimizes costs compared to local hardware purchases.
    • Service providers handle software management, including installation, upgrades, security, backups, and disaster recovery.

    TCP/IP

    • Combined set of protocols responsible for communication over the internet.
    • Developed from Transmission Control Protocol (TCP) used for communication over ARPANET.
    • Ensures reliable delivery of messages by dividing them into packets with sequential numbering.

    World Wide Web

    • Collection of hardware and software associated with the internet, allowing users to access multimedia documents.
    • Introduced by Tim Berners-Lee, who developed key technologies like HTML and HTTP.
    • Aims to make the web universally accessible to everyone, regardless of disabilities, language, or culture.

    Web Services

    • Software components stored on a server accessible via the internet by other applications.
    • Facilitate the development of mashups by combining complementary web services from different organizations.
    • Accessible via web browsers, enabling portability across diverse platforms.

    Software Development Kit (SDK)

    • Contains tools and documentation used by developers to program applications.

    Alpha Software

    • Earliest version of a software product still under development.
    • Often contains bugs, is incomplete, and unstable.
    • Released to a limited number of developers for testing features and gathering feedback.

    Beta Software

    • Released to a larger group of developers after most major bugs are addressed and features are near completion.
    • More stable than alpha versions, but still subject to change.

    Release Candidates

    • Feature complete, mostly bug-free, and ready for public testing.
    • Used in a diverse testing environment to identify and fix remaining bugs.

    Final Release

    • Released to the general public after addressing bugs identified in the release candidate stage.
    • Software companies typically distribute incremental updates over the internet.

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    Description

    Explore essential concepts in modern software development, including Ajax technology, the Internet of Things, Agile methodologies, and the practice of refactoring. This quiz will test your understanding of how these components enhance application performance and development efficiency.

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