1.3.4: Web Technologies Flashcards

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1
Q

What does the tag <html> mean?

A
  • All code written within the tags is interpreted as HTML
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2
Q

What does the tag <body> do?

A
  • Defines the content in the main content area of the webpage
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3
Q

What does the tag <link></link> used for?

A
  • Linking additional files, including CSS stylesheets
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4
Q

What does the tag <head> do?

A
  • Defines the browser tab or window heading area
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5
Q

What does the tag <title> do?</title>

A
  • Defines the text that appears with the tab or window heading area
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6
Q

What are the tags <h1> <h2> <h3>?

A
  • Heading styles in decreasing sizes
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7
Q

What does the tag <p> do?

A
  • Defines a paragraph separated with a line space above and below
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8
Q

What is the tag <img src=”source”, height=x, width=y> used for?

A
  • Images
  • Self closing tag: No need to include </img> when in use
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9
Q

What is the tag <a>?</a>

A
  • An anchor tag that defines a hyperlink with the location parameter
  • Laid out in the following form:
    <a> link text </a>
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10
Q

When is the tag <ol> used?

A
  • To define an ordered list
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11
Q

When is the tag <li> used?

A
  • To define each element within the (Ordered or Unordered) list
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12
Q

When is the tag <ul> used?

A
  • To define an unordered list (Bullet points)
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13
Q

When is the tag <div> used?

A
  • To divide the page into separate areas, each of which can be referred to uniquely by name
  • <div>
    </div>
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14
Q

What are Classes and Identifiers?

A
  • Attributes given to elements on a webpage which you wish to style in a particular way
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15
Q

What is the syntax that CSS has to follow?

A

body
{
margin: 0px;
padding: 0px;
background-colour: white;
font-family: Arial, Helvetic, sans-serif;
font-size: 18px;
Text-align: center;
}

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16
Q

What are the advantages of using JavaScript?

A
  • Local computer can deal with invalid data before it is sent off to the servers
  • Eases the load on busy servers
  • Reduces web traffic
17
Q

How do Search Engines work?

A
  • They rely on an index of web pages
  • Web crawlers (Spiders) collect information about websites to build the index
17
Q

What is a Search Engine?

A
  • A program that searches through a database of internet addresses looking for resources based on a criteria
18
Q

What do Web Crawlers (Spiders) collect?

A
  • Keywords and phrases from the linked web pages and add the information to the index
  • Also collect metadata from websites (Information specified by the web owner)
19
Q

What does the PageRank Algorithm do?

A
  • Determine the order in which web pages are displayed when a search is conducted
  • Higher ranked pages show up first
20
Q

What is the first factor that determines the rank of a page?

A
  • How many incoming links it has from other pages
21
Q

What is the second factor that determines the rank of a page?

A
  • The page rank of the web pages that link to it
22
Q

What else do modern Search Engines use to determine the order in which pages are displayed?

A
  • The age of the web page and how quickly the web page loads
23
Q

What is Server Side Processing?

A
  • When a client sends data to a server for it to be processed
24
Q

What does Server Side Processing mean?

A
  • No information is processed on the client computer
25
Q

What are common Server Side Processing scripting languages?

A
  • SQL
  • PHP
26
Q

Why is Server Side Processing useful?

A
  • Does not require plugins
  • Can perform large calculations much faster than clients
  • Not browser dependent
  • More secure
27
Q

What is Client Side Processing (Client Side Scripting)?

A
  • When a client processes the data on a local device
28
Q

What does Client Side Processing (Client Side Scripting) mean?

A
  • All the information is processed on the client computer
29
Q

What languages does Client Side Processing (Client Side Scripting) use?

A
  • JavaScript
30
Q

Why is Client Side Processing (Client Side Scripting) useful?

A
  • Webpage can immediately respond to user actions
  • Executes quickly
  • Gives developers more control over the behaviour and look of the website