1.3.4 Web Technologies Flashcards by Lucy Williams

What is HTML?

The language that web pages are written in

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What is the function of <html>?

All code written within is interpreted as HTML

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What is the function of <body>?

Defines content in the main browser content area

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What is the function of <link></link>?

Used to link to a CSS stylesheet

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What is the function of <head>?

Defines the browser tab

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What is the function of <title>?</title>

Defines the title of the document

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What is the function of <h1>, <h2> ..?

Heading styles in decreasing sizes

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What is the function of <p>?

A paragraph separated with a line space above and below

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What is the function of <img></img>?

Self closing image with parameters

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How is the <img></img> tag used?

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What is the function of <a>?</a>

Anchor tag defining hyperlinkg with location parameters

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How is the <a> tag used?</a>

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What is the function of <ol>?

Defines an ordered list

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What is the function of <ul>?

Defines an unordered list

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What is the function of <li>?

Defines an individual list item

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What is the function of <div>?

Creates division of a page into separate areas which can be identified by a unique name

How is the <div> tag used?

How are classes defined using HTML?

With full stop as prefix to class name

How are identifiers defined using HTML?

With an initial hashtag

What is CSS?

A language used to describe the style of the webpage

What is internal/embedded CSS?

Placed inside style tags entered directly within the HTML document

What is external CSS?

Placed inside external style sheet linked to HTML document

What is JavaScript?

A language that adds interactivity to websites

What is a search engine?

A program that searches through a database of Internet addresses looking for resources based on a criteria set by client

What are web crawlers?

Programs that collect information by traversing Internet webpage by webpage looking for linked sites

What information do web crawlers collect?

Keywords & phrases from web page Meta data

What is the purpose of the PageRank algorithm?

Ranks each webpage Higher ranked pages will show first on search engine

State the 2 factors which determine the page rank of a page.

The number of incoming links from other web pages Page rank of linked web pages

What is the algorithm for PageRank?

PageRank(x) = (1-d) + d[(PageRank(T1) / Count(T1)) + ... + (PageRank(Tn) / Count(Tn))]

What is the dampening factor in the PageRank algorithm?

Probability surfer will click through to the page

What is the purpose of a dampening factor in the PageRank algorithm?

Stops page rank of linked pages from having too much effect

What is server side processing?

When a client sends data to a server for it to be processed No information is processed on the client computer

Give three advantages of server side processing.

Can perform large calculations faster Not browser dependent More secure

What is client side processing?

When a client process the data on its local device All information processed on client computer

Give 2 advantages to client side processing.

Webpage gives immediate response to user actions Gives developers more control over website