Final answer:
External secondary storage components include DVD, USB drive, and CD.
Step-by-step explanation:
The external secondary storage components are DVD, USB drive, and CD. These components are used to store data externally from the computer system. DVDs, USB drives, and CDs provide a portable and convenient way to store and transfer large amounts of data. RAM and ROM, on the other hand, are not external secondary storage components, but rather primary storage components within a computer system.
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