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Which section of the HTML document typically contains meta tags and links to stylesheets?

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The section of an HTML document typically contains meta tags, links to stylesheets, links to scripts, and other metadata about the document. This section doesn't directly display content in the main browser window but provides information to the browser and search engines about the document's properties and linked resources. 
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The ______ attribute in the video tag is used to specify an image to be shown while the video is downloading, or until the user hits the play button.

  • display-image 
  • imgsrc 
  • placeholder 
  • poster 
The poster attribute in the video tag allows developers to specify an image that will be displayed before the video starts playing. This can be particularly useful as a visual introduction or preview of the video content. It not only provides a more engaging user experience but also gives a visual context about the video before it starts playing. 
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______ is used to provide a caption for a
element.

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The
element is used within the

element to provide a caption. The

element is often used to mark up diagrams, illustrations, photos, and code listings, among others, and
can be used to provide an explanatory caption for these content types. 
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To create a link that sends an email, you use the ______ attribute with a value that starts with mailto:.

  • alt 
  • href 
  • src 
  • target 
The href attribute is used within the tag to define the hyperlink reference. When its value starts with mailto:, clicking on the link will open the default email client on the user's machine, pre-filled with the specified email address. For example, Send Email will create a link to send an email to "[email protected]". 
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For ensuring multimedia content accessibility, you should provide ______ as a fallback option inside the audio or video tags.

  • annotations 
  • captions 
  • thumbnails 
  • transcripts 
Providing transcripts for audio and video content is crucial for accessibility. Transcripts offer a text representation of the content which can be beneficial for individuals who are deaf or hard of hearing, and for those who might not be able to access the content due to technical constraints. Captions serve a similar purpose but are synchronized with the media, while annotations often offer additional, non-essential information. 
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You need to load a script without blocking the HTML parser during the loading phase. How would you use the "async" and "defer" attributes to achieve this, and what are the key differences between them?

  • Use "async" and "defer" interchangeably as they have identical functionalities. 
  • Use "async" to load the script after the HTML is parsed and "defer" to execute the script immediately. 
  • Use "async" to load the script in parallel and execute it as soon as it finishes downloading; use "defer" to load the script in parallel but defer its execution until after the HTML is parsed. 
  • Use "async" to pause the HTML parser and "defer" to load the script in parallel. 
Both "async" and "defer" are attributes used with