Computer Science for IGCSE & O level - Hardware (Section 19 - No. 12)
How does a dual-layer Blu-ray disc achieve a higher storage capacity?
By using a shorter wavelength laser.
By using multiple layers to store data.
By increasing the disc's diameter.
By reducing the spacing between data tracks.
Εξήγηση
A dual-layer disc stores data on two layers, thus increasing capacity.