<span>Files exist on data storage devices, such as hard disks, DVDs, USB drives, and reels of magnetic tape.
</span>Data storage<span> is the recording (storing) of information (data) and </span><span>these data storage devices use</span> a technology consisting of computer components and recording media used to retain digital data.DVDs, USBs and hard disks are examples for external data storage devices.
Answer:
1. Write through
2. Write back
3. Write back
4. Write through.
Explanation:
The answers are given accordingly as above.
In business documents, spacing between columns needs to be proportional to the text because when spacing between columns, you don't want your text or writing to be too far apart but you want it pretty close/equivalent so the text can be correct.