CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Computer Hardware and Software
Sunrise Textiles Ltd. finds that its office computers lose all unsaved work when power is switched off, yet files saved earlier remain intact. Which pairing correctly explains this behaviour?
RAM is volatile working memory, so unsaved data is lost when power goes off, while the hard disk is non-volatile secondary storage that retains files saved earlier. That explains why only unsaved work disappears after a power cut.
- ARAM is volatile and holds working data; the hard disk is non-volatile and retains saved filesCorrect
- BRAM is non-volatile and the hard disk is volatile, so saved files vanish
- CROM is volatile and holds working data; the SSD is volatile
- DBoth RAM and hard disk are volatile, but files are restored from cache
Explanation
RAM is volatile main memory, so its contents vanish without power. Secondary storage such as a hard disk or SSD is non-volatile and keeps saved files. The option reversing the two is wrong because it misstates volatility.
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