Just see the image below, both using UTF-8 encoding.
Not sure about this one dude
try to see if Myron or Tony can help with this
Thank you, but what is the Myron or Tony ?
Myron and Tony are people.
ls will display question marks if it thinks the filenames have non-printable control codes in them.
UTF-8 filenames will often do that.
http://www.gnu.org/software/coreutils/manual/html_node/Formatting-the-file-names.html