Questions and Answers
What is the primary function of a web browser?
What is the purpose of an external proxy web cache?
What is HTTP primarily used for?
What is the purpose of an HTTP cookie?
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What is a hyperlink used for?
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What is a major concern on the Internet today?
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What does ARPANET stand for?
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What is the main function of an Internet Service Provider (ISP)?
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What is the purpose of an IP Address?
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Who coined the term 'Cyberspace'?
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What is the World Wide Web (WWW)?
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What is a Website?
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What is the purpose of a URL?
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What is a Home Page?
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Study Notes
Internet History and Basics
- ARPANET (Advanced Research Projects Agency Network) was the world's first packet switching network, developed by ARPA of the US Department of Defense, and is the precursor to the Internet.
Internet Service Provider (ISP)
- An ISP is a company that provides users with access to the Internet, offering services such as email accounts and remote storage of files.
IP Address
- An IP address is a numerical identifier for an entity on a computer network.
- IPv4, the original addressing system, used 32-bit addresses, while IPv6 uses 128-bit addresses due to the growth of the Internet.
Cyberspace
- Cyberspace refers to the collection of interconnected computer networks and the content they host, often used to describe the Internet.
World Wide Web (WWW)
- The WWW is a collection of interlinked documents accessible over the Internet, consisting of millions of web pages containing text, images, voice, and videos.
- Sir Tim Berners-Lee, a British scientist at CERN, created the World Wide Web.
Website and Web Page
- A website is a set of web pages containing text, audio, and video, hosted on web servers.
- Web pages are resources of information, generally created in HTML format, providing navigational abilities through hyperlinks.
Home Page and URL
- A home page is the default page of a website, often the main page of a complex website.
- A URL specifies the location of a resource on the Internet, consisting of a basic address and path.
Web Browser and Cache
- A web browser is a software application that facilitates user interaction with web information.
- Web browsers maintain a cache of recently visited web pages, some using an external proxy web cache to enable faster access to frequently visited pages.
HTTP and Web Cookie
- HTTP (Hypertext Transfer Protocol) is a communications protocol used for transferring information over the Internet.
- A web cookie, also known as an HTTP cookie, is a piece of text exchanged between the web client and web server, sent by the server to the client and returned unchanged by the client.
Session and Hyperlink
- A session is an exchange of information between a computer and its user, established for a certain period of time.
- A hyperlink is a reference in a document to another section or document, used to redirect the user from one section of a page to another.
Internet Security
- Internet security is a major concern due to the open nature of the Internet, accessible by millions of users worldwide.
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Description
Learn about the basics of the internet, including ARPANET, Internet Service Providers, and other essential terminology.