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Questions and Answers

What protocol is primarily used for sending email?

  • Post Office Protocol version 3 (POP3)
  • File Transfer Protocol (FTP)
  • Simple Mail Transport Protocol (SMTP) (correct)
  • Hypertext Transport Protocol (HTTP)

    • What is the primary purpose of HTML?

  • To manage server-side operations and databases.
  • To create interactive web applications using JavaScript.
  • To execute complex algorithms for web applications.
  • To define the structure of a web page and format its elements. (correct)

    • Which protocol enables real-time communication between users on the Internet?

  • Internet Relay Chat Protocol (IRC) (correct)
  • Multipurpose Internet Mail Extensions (MIME)
  • File Transfer Protocol (FTP)
  • Network News Transfer Protocol (NNTP)

    • Which of the following elements is used to define a large heading in HTML?

    <h1> Signup and view all the answers

    What is the primary function of the File Transfer Protocol (FTP)?

    <p>To upload and download files across the Internet</p> Signup and view all the answers

    Which statement correctly describes an intranet?

    <p>An intranet is an interconnected network used within an organization.</p> Signup and view all the answers

    Which statement accurately describes procedural programming languages?

    <p>They follow a sequential structure with commands for branching and looping.</p> Signup and view all the answers

    What does the element define in an HTML document?

    <p>The main content of the HTML page that is visible to users.</p> Signup and view all the answers

    Which of the following best defines an extranet?

    <p>An intranet that includes external entities like partners or suppliers.</p> Signup and view all the answers

    What role do tags play in markup languages like HTML?

    <p>To provide structure and formatting for web content.</p> Signup and view all the answers

    Which protocol is used primarily for posting and reading messages in discussion forums?

    <p>Network News Transfer Protocol (NNTP)</p> Signup and view all the answers

    Which element specifies the title of an HTML page that appears in the browser's title bar?

    &lt;title> Signup and view all the answers

    What is a common feature of both intranets and extranets?

    <p>They both use TCP/IP protocols.</p> Signup and view all the answers

    Which of the following best characterizes object-oriented programming languages?

    <p>They consist of objects that encapsulate both data and procedures.</p> Signup and view all the answers

    What does the Hypertext Transport Protocol (HTTP) primarily facilitate?

    <p>Accessing hypertext documents and web resources.</p> Signup and view all the answers

    What aspect of HTML elements helps browsers display web content appropriately?

    <p>The hierarchy and structuring provided by the tags.</p> Signup and view all the answers

    What is the purpose of a domain name?

    <p>To provide an alternative addressing method using words.</p> Signup and view all the answers

    Which part of the domain name 'www.microsoft.com' represents the top-level domain?

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

    What does HTTP stand for in web page delivery?

    <p>Hypertext Transfer Protocol</p> Signup and view all the answers

    Who controls the domain name system?

    <p>Internet Assigned Numbers Authority (IANA)</p> Signup and view all the answers

    What is the function of Simple Mail Transfer Protocol (SMTP)?

    <p>To format and administer mail messages.</p> Signup and view all the answers

    What is the role of the Post Office Protocol (POP) in e-mail?

    <p>To retrieve mail from the e-mail server.</p> Signup and view all the answers

    How does the Interactive Mail Access Protocol (IMAP) differ from Post Office Protocol (POP)?

    <p>IMAP includes additional features over POP.</p> Signup and view all the answers

    What is a uniform resource locator (URL)?

    <p>A combination of the protocol name and the domain name.</p> Signup and view all the answers

    Study Notes

    Electr

    • onic Business SystemsElectronic business systems use the internet, data management, e-business systems, and security.

    Chapter 3: The Internet and the World Wide Web

    • Domain ames are used to make internet addresses easier to understand.
    • Domain names consist of segments separated by periods.
    • For instance, in "www.microsoft.com", "www" is the specific computer, "com" is the top-level domain, and "Microsoft" is the subdomain.
    • Top-level domains (TLDs) are the most general identifiers in a domain name.
    • Examples of original general TLDs include .com (commercial), .edu (educational), .gov (government), .mil (military), .net (general use), .org (nonprofit).
    • New general TLDs (2000) include .aero (air-transport industry), .biz (businesses), .coop (cooperatives), .info (general use), .museum (museums), .name (individual people), .pro (professionals).
    • Country TLDs include .au (Australia), .ca (Canada), .de (Germany), .fi (Finland), .fr (France), .jp (Japan), .se (Sweden), .uk (United Kingdom).
    • Internet Assigned Numbers Authority (IANA) controls the domain name system.
    • Network Solutions, Inc. (NSI) issues and administers domain names.

    Web Page Delivery

    • Hypertext Transfer Protocol (HTTP) delivers web pages over the internet.
    • HTTP uses a client-server model.
    • A user's web browser requests a web page from a remote server.
    • The server sends an HTTP response back to the browser.
    • A uniform resource locator (URL) combines the protocol name and domain name.

    SMTP, POP, MIME, and IMAP

    • E-mail requires a common formatting to be readable across different companies.
    • Simple Mail Transfer Protocol (SMTP) formats and administers mail.
    • Post Office Protocol (POP) allows email programs to request mail from a main email server.
    • Multipurpose Internet Mail Extensions (MIME) allows attachment of binary files to email.
    • Interactive Mail Access Protocol (IMAP) has similar functions to POP but with added features.

    Internet Client/Server Applications

    • Applications like email, file transfer, chat, and use-net newsgroups utilize various protocols.
    • Simple Mail Transport Protocol (SMTP), Post Office Protocol version 3 (POP3), and Multipurpose Internet Mail Extensions (MIME) are used for email.
    • File Transfer Protocol (FTP) facilitates the uploading and downloading of files.
    • Internet Relay Chat Protocol (IRC) allows real-time communication.
    • Network News Transfer Protocol (NNTP) facilitates asynchronous discussions in newsgroups.
    • Hypertext Transport Protocol (HTTP) powers the World Wide Web.

    Intranets and Extranets

    • Intranets are internal networks that do not extend outside the organization.

    • Intranets are used to distribute corporate information.

    • An intranet employs web browsers and internet protocols (e.g., TCP/IP, FTP, Telnet, HTML, HTTP).

    • Intranets often include firewalls.

    • Extranets extend intranets to include outside entities like partners and suppliers

    • Extranets can be public networks, secured private networks, or virtual private networks (VPNs).

    • A public network is freely accessible to anyone.

    • A private network is a connection between entities, like two companies.

    • VPN (virtual private network) creates a secure network connection over the internet.

    Internet Programming

    • Server-side programs operate on the server to process requests and return output.
    • Client-side programs run on user's computers to provide an immediate response.
    • Common Gateway Interface (CGI) scripts are used to manage requests and responses.

    Program

    • Programs involve steps to achieve a goal or solve a problem.
    • Programs can be algorithmic (well defined steps) or use heuristics (human judgment, experience).

    Computer Programming

    • Markup languages use tags to format and display content (e.g., HTML).
    • Procedural languages use sequential commands with decision points.
    • Object-oriented languages use objects that incorporate data and procedures.

    Markup Languages and the Web

    • Web pages utilize markup languages, notably HTML.
    • Web pages use tags to define layout and formatting characteristics.

    Hypertext Markup Language (HTML)

    • HTML is the standard language for creating web pages.
    • HTML defines the structure of a web page using a series of elements and tags.
    • HTML elements instruct browsers on the display of page contents.

    Example HTML Structure (Ex1)

    • <DOCTYPE html>: Declares the document type as HTML.
    • <html>: Root element of the HTML page.
    • <head>: Contains meta-information about the page (e.g., title).
    • <title>: Specifies the title that appears in the browser tab.
    • <body>: Contains visible page content.
    • <h1>, <h2>, <h3>: Defines headings of different sizes.
    • <p>: Defines paragraph text.

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