Uppercase is capital letters. For example: A B C D E F G
Lowercase is letters that are not capitalised. For example: a b c d e f g
"No" is probably the abbreviation for "number".
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Yes upper and lower case letters can simultaneously be used as password features.
Both. "Case sensitive" means that upper case and lower case characters are treated as different characters.
upper case
no.
Lower case Roman numerals have exactly the same value as upper case numerals