The scan-list option defines the frequencies that a wireless interface should scan or operate on. Valid formats include:
* Single frequencies: e.g., 5560
* Ranges: e.g., 5660-5700
* Including "default" for system-determined values
* Comma-separated lists are accepted
Characters like ~ or + are not allowed.
MTCNA Official Course Material - Wireless Configuration:
"scan-list can include frequency numbers and ranges separated by commas. Example: 5500,5520-5700. Use
'default' to use the standard channel list."
Rene Meneses MTCNA Guide - Wireless Interface Options:
"Valid scan-list includes entries like: 5180,5200-5320, or default. Invalid characters such as '~' or '+' are not supported." MikroTik Wiki - Wireless Manual:
"Values can be comma-separated frequencies and ranges. Symbols such as '+' or '~' are not allowed in scan- list values." Option A: valid format Option B: invalid ('~' is not allowed) Option C: valid - includes default and proper ranges Option D: invalid - '+' symbol is not allowed Thus, Option C is the only valid and complete answer.