Which of the following is true of the default attribute when adding text tracks to a video file?
A) It enables all the available tracks by marking them as default.
B) It enables the active track by marking it with the default attribute.
C) The default attribute is not required when there is a single track available.
D) The default attribute is not required when there are multiple tracks available.

Question

Which of the following is true of the default attribute when adding text tracks to a video file?
A) ​It enables all the available tracks by marking them as default.
B) ​It enables the active track by marking it with the default attribute.
C) ​The default attribute is not required when there is a single track available.
D) ​The default attribute is not required when there are multiple tracks available.

Quizplus · Accepted Answer

The default attribute is used to indicate which track should be used as the default track when the video is played. When adding multiple text tracks to a video, only one track can be the default track, and it is identified by the default attribute. Therefore, it is important to mark the active track as default by using the default attribute. Option A is incorrect because enabling all available tracks as default might not be necessary and can cause confusion. Option C and D are incorrect because the default attribute is required regardless of the number of tracks available.

Which of the Following Is True of the Default Attribute