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OCR Computer Science > 1.3.4 Web Technologies > Flashcards

1.3.4 Web Technologies Flashcards

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1
Q

What is HTML?

A

The language that web pages are written in

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2
Q

What is the function of <html>?

A

All code written within is interpreted as HTML

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3
Q

What is the function of <body>?

A

Defines content in the main browser content area

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4
Q

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

A

Used to link to a CSS stylesheet

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5
Q

What is the function of <head>?

A

Defines the browser tab

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6
Q

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

A

Defines the title of the document

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7
Q

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

A

Heading styles in decreasing sizes

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8
Q

What is the function of <p>?

A

A paragraph separated with a line space above and below

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9
Q

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

A

Self closing image with parameters

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10
Q

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

A

<img></img>

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11
Q

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

A

Anchor tag defining hyperlinkg with location parameters

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12
Q

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

A

<a> link text </a>

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13
Q

What is the function of <ol>?

A

Defines an ordered list

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14
Q

What is the function of <ul>?

A

Defines an unordered list

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15
Q

What is the function of <li>?

A

Defines an individual list item

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16
Q

What is the function of <div>?

A

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

17
Q

How is the <div> tag used?

A

<div>
</div>

18
Q

How are classes defined using HTML?

A

With full stop as prefix to class name

19
Q

How are identifiers defined using HTML?

A

With an initial hashtag

20
Q

What is CSS?

A

A language used to describe the style of the webpage

21
Q

What is internal/embedded CSS?

A

Placed inside style tags entered directly within the HTML document

22
Q

What is external CSS?

A

Placed inside external style sheet linked to HTML document

23
Q

What is JavaScript?

A

A language that adds interactivity to websites

24
Q

What is a search engine?

A

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

25
Q

What are web crawlers?

A

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

26
Q

What information do web crawlers collect?

A

Keywords & phrases from web page
Meta data

27
Q

What is the purpose of the PageRank algorithm?

A

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

28
Q

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

A

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

29
Q

What is the algorithm for PageRank?

A

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

30
Q

What is the dampening factor in the PageRank algorithm?

A

Probability surfer will click through to the page

31
Q

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

A

Stops page rank of linked pages from having too much effect

32
Q

What is server side processing?

A

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

33
Q

Give three advantages of server side processing.

A

Can perform large calculations faster
Not browser dependent
More secure

34
Q

What is client side processing?

A

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

35
Q

Give 2 advantages to client side processing.

A

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

OCR Computer Science (29 decks)

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