Which property makes ROM suitable for holding the startup program of a computer?
AIt is volatile and loses everything at power off
BIt is non-volatile and keeps its contents without power
CIt can be rewritten as freely and often as RAM can
DIt is read directly by the hard disk controller
Answer & Solution
Correct answer: B. It is non-volatile and keeps its contents without power
1. The startup program, or boot loader, must survive a power cut so the machine can start again.
2. RAM is volatile, so everything in it is wiped when the supply is turned off.
3. ROM is non-volatile, meaning its contents are not lost even when power is turned off.
4. It is therefore used as a small but faster permanent store for contents that rarely change, and the boot loader lives there.
5. Option A describes RAM, not ROM; option C is wrong because ROM is read-mostly.
_Source: NCERT Computer Science Class 11, Ch 1 'Computer System', S1.3.2 Types of Memory_
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