ITPEC IP October 2020 Question 22
ITPEC IP October 2020 — Question 22 of 100
Some PC operating systems can boot from external media such as a CD-ROM or USB memory device. Live environments, installers, diagnostic systems, and recovery tools commonly start this way without requiring the installed hard disk to be the boot source.
Answer (d)
Why not others:
- compatible PCs can support different operating systems or dual-boot configurations
- 64-bit CPUs have many corresponding 64-bit operating systems
- an OS upgrade may create compatibility issues, but it does not make every existing application unusable
Key rule: Firmware can select among bootable devices; the operating system need not always be loaded from the internal disk.
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