distributes Web files is called a Web It can host one or more Web SECTION A: The Web, one of the Internet's hot- In 1990. Tim Berners-Lee developed the technologies test attractions, is a collection of document, image, video for today's Web. An Internet-based computer that stones and sound files that can be linked and accessed over the Internet via the protocol. The Web is an interlinked collection of information, whereas the as www.wikipedia.org or www.facebook.com cota documents, which is the communications system used to transport Web information. The Web evolved from a concept be accessed and displayed using client software cales called Each Web page has a which describes a collection of Web literary documents linked according to logical relationships address called an) ing HTML to make logging in to Web sites SECTION B: Today's popular browsers include Microsoft Edge, Internet Explorer, Google more convenient. Browser users can decide whether or Apple Safari, and Mozilla Firefox The browser that starts not to turn this feature on even though it is a slight securty automatically when clicking links in email messages is risk. When browsers download HTML documents, images, called the browser. Browsers and links for a Web page, they are stored in a browser can be customized in many ways--for example, by add- Browsers also store a list of the ing for pages you use frequently. Web sites you've visited in the list Browser such as AdBlock and Turning on browsing stores these toolbars add functionality to browsers. Browsers may need items only temporarily and deletes them when the browse additional software programs called is closed to work with various file formats. Browsers can also store 307 SECTION CH The current version of HTML at HTML5 an example of an that uses HTML Amilar language, called included in which was introduced in 2010 style sheets. These can be mal, or extemal. A link to an extra CSS document can be intered in the such as section of an HTML document Using HTML and CSS and sp, to specify the format for text and images Web designers can create ai Web page that displays the same information regardless wired to describe data by inserting tags that represent of who cesses it. Designers can also use client-side and database folds. An HTML document is also called ain) server side scripting to create document, which can be viewed from Web pages featuring animations or content that is custom in a browser. Several online and local tools are avail ized for a specific user. Web sites can be posted on Web ble for creating HTML documents. An HTML document con services, where they can be ther- sists of two parts: the Head and the oughly tested before being open for public access The specifications for text styles in Web pages can be 4 SECTION D: HTTP is the web's communications that works with TCP/IP to deliver elements of Web pages to a local browser A browser commu- nicates with a Web server using HTTP such as GET and POST. An HTTP is a sequence of transactions that typically include a browser request and the server's response HTTP codes such as 200 and 404 indicate whether the server was able to fulfill the browser's request HTTP is a(n) protocol, which cannot detect if a sequence of sessions originate from the same source. To compensate, Web servers use cookies, which store a small file of data on the user's device. Cookies can be collected during subsequent sessions to keep track of pages viewed and items purchased cook les remain on the local device after a session ends. Cookies can be set by the domain that hosts a Web site. Additional cookies can be set by advertisers that have a presence on the site. These -party cookies can be blocked using browser settings. HTTP is not a secure transport pro- tocol, sofinancial transactions and personal data should be submitted to Web servers using a more secure protocol that displays in the browser address bar, This technology uses key encryp- tion to scramble the data while it is in transit SECTION E: To sift through the massive amounts of words called search looks them up information available on the Web and locate pertinent infor- in the database, and produces a list of relevant Web sites. mation about a topic, Web surfers utilize programs called There are a number of ways to narrow searches and produce search These special programs more targeted results, such as using have four major components. A Web operators or putting exact phrases in also called a Web spider, is automated to methodically the order in which Web sites are returned in response to your Visit Web sites and gather Web pages. A search engine query is dependent on relevancy criteria, such as keyword culls keywords from the gathered pages matches and popularity The search and stores them in a(n) accepts one or more engine's query
