1.3.4: web technologies

• What is HTML?


  HTML is the language/script that web pages are written in
• What does HTML do?


  HTML allows a browser to interpret and render a webpage
• What is a tag in HTML?


  HTML code is made up of tags, tags are the names given to values written within angle brackets i.e. <h1>
• What is an identifier selector?

  An identifier selector is a value that follows a hashtag
• What is a class selector?

  A class selector is a value that follows a full stop
• What is CSS?


  CSS is a script/language like HTML except it’s used to describe the style of a webpage.
• What are the names of the two methods of applying CSS?

  Internal/embedded CSS, External CSS
• Where do you write internal CSS?

  It’s placed inside the style tags and is entered directly within the HTML document
• Where do you write external CSS?

  You write it in a separate document
• How do you use external CSS in your HTML code?

  You use the <link> tag
• What is JavaScript?


  JavaScript is a language used on webpages to add interactivity.
• Is JavaScript interpreted or compiled?


  interpreted
• What is a search engine?

  A search engine is a program that searches through a database of internet addresses looking for a resource based on a criteria set by the client/user.
• What software does a search engine use?

  Web Crawlers
• What does a Web Crawler do?

  Travels across the internet collecting keywords and phrases from a web page and adding it to an index of web resources.
• What is the pagerank algorithm?


  The algorithm used to determine the order used when showing web results for a search engine query
• What factors determine a pagerank?

  • The number of incoming links it has from other web pages
  • The page rank of the web pages that link to it
• What is server side processing

  Server side processing is when a client sends information to a server for processing.
• What is client side processing?

  Client side processing is when information is processed on a local device for processing.