Question 1 Which of the following can you use in an @keyframes selector to indic

Question

Question 1

Which of the following can you use in an @keyframes selector to indicate property values for specific positions in an animation?

a percent from 1 to 100

a number from 1 to 100

a percent from 0 to 100

a number from 0 to 100

0.5 points

Question 2

When adding audio or video to a website, a primary problem is that

users often turn off the media players in their browsers so they’ll load faster

there isn’t a single combination of codecs that will work in all browsers

the HTML5 audio and video elements aren’t supported by all modern browsers

each of the modern browsers has a different media player

0.5 points

Question 3

If you assign an access key to a label,

the focus moves to the related control when the user presses the access key

the user must press the access key and then the tab key to move the focus to the related control

the user must press the access key twice to move the focus to the related control

d.

Question 4

Example 12-1: The code for playing a video
<video id="videoplayer" width="480" height="270" controls loop autoplay>
    <source src="media/sjv_speakers_sampson.mp4">
    <source src="media/sjv_speakers_sampson.webm" type='video/webm;
            codecs="vp8, vorbis"'>
    <source src="media/sjv_speakers_sampson.ogv" type='video/ogg;
            codecs="theora, vorbis"'>
   
    <object type="application/x-shockwave-flash" width="480" height="270">
        <param name="movie" value="media/sjv_speakers_sampson.swf">
        <param name="wmode" value="transparent">
        <param name="quality" value="high">
        <!--[if !IE]>-->
            <object type="application/x-shockwave-flash"
                    data="media/sjv_speakers_sampson.swf"
                    width="480" height="270">
                <param name="wmode" value="transparent">
                <param name="quality" value="high">
            </object>
        <!--<![endif]-->
    </object>   
</video>

(Refer to example 12-1) This code works because

older browsers look for embed elements unless an object element is first

browsers skip to the first nested element that applies to them

older browsers look for object elements

browsers ignore elements that they don’t understand

0.5 points

Question 5

How many radio buttons from the following code can be selected at any given time?
<input type="radio" name="address" value="Home">Home Address
<input type="radio" name="delivery" value="FedEx">Federal Express
<input type="radio" name="delivery" value="UPS">UPS

1

0

3

2

nothing happens when the user presses the access key because a label can’t receive the focus

a percent from 1 to 100

a number from 1 to 100

a percent from 0 to 100

a number from 0 to 100

Explanation / Answer

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1. c. a percent from 0 to 100

2. b. there isn't a single combination of codecs that will work in all browsers

3. a. the focus moves to the related control when the user presses the access key.

4. d. browsers ignore elements that they don't understand

5. d. 2

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