INPUTOUTPUT AND STORAGE DEVICES
STORAGE DEVICES HARD DISK SSD AND FLASH MEMORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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CD
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DVD
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DVD-RAM
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Blue-ray disks
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Detailed explanation-1: -In a DVD, the data is sandwiched between two polycarbonate layers, each 0.6-mm thick. Having a polycarbonate layer on top of the data can cause a problem called birefringence, in which the substrate layer refracts the laser light into two separate beams.
Detailed explanation-2: -Most of today’s optical disks are available in three formats: compact disks (CDs), digital versatile disks (DVDs)–also referred to as digital video disks–and Blu-ray disks, which provide the highest capacities and data transfer rates of the three.
Detailed explanation-3: -Alternatively called a disc drive, optical media, optical storage, and Optical disc drive, an optical disc is any media read using a laser assembly. The most common types of optical media are Blu-ray, CDs, and DVDs.