Which character encoding is required for DHCP Option 43 for current AP models?

For current Cisco AP models, DHCP Option 43 requires Hexadecimal (Hex) encoding. This is because Option 43 is a vendor-specific information field, and Cisco APs expect the vendor-specific data to be provided in a specific TLV (Type-Length-Value) format, which is represented in hexadecimal. MD5 is a hashing algorithm, not an encoding scheme for configuration data. Base64 is an encoding scheme used to represent binary data in an ASCII string format, often for transmission over mediums that only support text, but it's not the format Cisco APs expect for Option 43. ASCII is a character encoding standard for electronic communication, but it cannot represent the binary TLV structure directly as required for Option 43.