Cisco Certified Network Associate (CCNA) Practice Exam

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How do you recover a corrupt IOS image on a Cisco 2600 series router?

Use the command >o/r 0x2141
Use the command >tftpnld
Type >enable first
Press CTRL + BREAK and reset

The correct answer is: Use the command >tftpnld

Using the command that initiates the TFTP download process is the correct approach for recovering a corrupt IOS image on a Cisco 2600 series router. The TFTP (Trivial File Transfer Protocol) approach effectively allows the router to pull a new IOS image from a TFTP server on the network. This method is particularly useful when the current IOS image is damaged, rendering the router unable to boot properly. To use this method, it's essential to ensure that the TFTP server is configured correctly and reachable by the router, which involves proper network configuration, including IP addressing. Once initiated, TFTP will transfer the appropriate IOS image to the router, replacing the corrupt one, allowing the device to function normally again. The other choices represent different commands or actions that are not specifically designed to recover a corrupt IOS image. They may have relevance in different contexts or procedures but do not directly address the need for replacing or repairing a damaged IOS on a router.