This is a "Universal" image containing all features (Base, IP Base, Enterprise Services). The "k9" indicates it supports strong payload encryption (triple DES/AES).
Indicates a digitally signed software package, ensuring the firmware hasn't been tampered with. 03.11.05.E: This is the IOS XE version. cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin