COMPUTER HARDWARE COMPONENTS FUNCTIONS
EXTERNAL AND INTERNAL STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two disadvantages of CD ROM
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Data transfer rate is slower compared to other storage medium
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Not Robust-easily be damaged or scratched.
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Have many moving parts like HDD
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Not portable
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Explanation:
Detailed explanation-1: -Because the reflective metal layer and data layer are so close to the surface of the label side of the disc, they can be damaged very easily.
Detailed explanation-2: -The metal reflective layer in CD-Rs has generally been gold, silver or a silver alloy. Gold is very stable, thus discs with a gold reflective layer are not at risk for “laser rot” (a term used to describe the corrosion of the metal layer). Hence, they have excellent longevity.
Detailed explanation-3: -An added advantage with CDs is that, while they can be scratched and jewel cases are famously touchy, they cannot be worn out by repeat playing, are relatively small, easy to store and fairly robust.
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