Multiple choice technology A dual-layer DVD is valued because it: Can hold more data Contains a backup of the data stored Uses a second layer to offer a speed increase Creates alternative sound tracks Reveal answer Fill a bubble to check yourself A Correct answer Explanation Dual-layer DVDs can store approximately twice the data of single-layer DVDs by using two semi-transparent layers that the laser can read from different depths. They do not provide automatic backup, speed increases, or alternative audio tracks.