C3750e-universalk9-mz.150-2.se11.bin
This is a "universal" image, meaning it contains all software features (IP Base, IP Services, and Advanced IP Services). Access to these features is determined by the specific license installed on the switch hardware.
: Designates the IOS version. This is IOS Release 15.0, Technology Train 2, Special Enterprise (SE) rebuilding number 11. c3750e-universalk9-mz.150-2.se11.bin
Includes advanced enterprise services (Layer 3 routing, advanced security) and supports cryptographic features. mz: Indicates the file runs in memory and is compressed. This is a "universal" image, meaning it contains