Answer :
Final answer:
A router, upon power on, searches for the Internetwork Operating System (IOS) image in the following default order: ROM, Flash, TFTP. It first checks in ROM, then Flash memory, and lastly tries to load from a TFTP server if it cannot locate an IOS image in the previous sources.
Explanation:
The default sequence in which a router searches for the Internetwork Operating System (IOS) image upon power on is option 2 - ROM, Flash, and TFTP:
- ROM: The router first checks ROM (Read Only Memory) for a basic IOS image.
- Flash: If it does not find an IOS image in ROM, it moves to the next step and checks Flash memory.
- TFTP: Finally, if it cannot locate an IOS image in Flash, it tries to load it from a TFTP (Trivial File Transfer Protocol) server in the network.
This order ensures that the device can always find an IOS image to load, even if one or more sources are not available.
Learn more about IOS loading sequence here:
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