– Many candidates still use this IOS version in emulators like GNS3 or EVE-NG to practice legacy routing protocols and security features.
While this image is a classic, many engineers are transitioning to Cisco CML (Cisco Modeling Labs) Cisco DevNet C3725-adventerprisek9-mz.124-15.t5.bin Download
The c3725-adventerprisek9-mz.124-15.t5.bin file is a widely used for the legacy Cisco 3725 series router, frequently utilized in network emulation environments like GNS3 and EVE-NG . – Many candidates still use this IOS version