HTML5 Multimedia Unit Test

1. Multiple choice questions (2 questions in total, 20.0 points)

1. (Single choice, 10.0 points)
   To specify multiple video sources for an element use the ( ) tag (element).
   A select
   B datalist
   C source
   D src

2. (Single-choice question, 10.0 points)
   To judge whether the browser supports the specified media type, you need to use the ( ) method of the audio or video object.
   A load()
   B play()
   C pause()
   D canPlayType()

2. Multiple-choice questions (4 questions in total, 40.0 points)
3. (Multiple-choice questions, 10.0 points)
HTML5 has added powerful multimedia functions, which are mainly reflected in ( ) two aspects.
A video element
B image element
C audio element
D animation elements

4. (Multiple choice, 10.0 points)
   Which of the following descriptions about common attributes of elements is correct ( ).
   A If the autoplay attribute is present, the video will play as soon as it is ready.
   B If the controls attribute is present, the playback control panel is displayed to the user.
   C If the loop attribute appears, it will start playing again after the media file is finished playing.
   The D src attribute can specify multiple URLs of videos to be played.

5. (Multiple choice, 10.0 points)
   The <source> tag is suitable for providing multiple media sources to ( ) elements.
   A <video>
   B <input>
   C <audio>
   D <select>

6. (Multiple choice, 10.0 points)
   Use the ( ) attribute to play music automatically and automatically.
   A autoplay
   B controls
   C loop
   D preload

3. True or false questions (4 questions in total, 40.0 points)

7. (True or false, 10.0 points)
   The playback control of the <video> element implements functions including play, pause, progress and volume control, full screen, etc., and allows custom control functions and styles.
   A pair
   B wrong

8. (True or false, 10.0 points)
   The content inserted between <video> and </video> will not be displayed in the browser.
   A pair
   B wrong

9. (True or false, 10.0 points)
   So far, there are video formats supported by all browsers.
   A pair
   B wrong

10. (True or false, 10.0 points)
    The DOM operation functions of the Audio object and the Video object are core functions uniformly defined by the HTMLMediaElement object.
    A pair
    B wrong