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Base64: Quiz


Question 1: For instance, uuencode uses uppercase letters, digits, and many punctuation characters, but no lowercase, since UNIX was sometimes used with terminals that did not support distinct ________.
Letter caseLatin alphabetCapital letterTypographic ligature

Question 2: Base64 is often used to embed binary data in an ________ file, using a syntax similar to <data encoding="base64">…</data> e.g.
XMLXHTMLHTMLScalable Vector Graphics

Question 3: The are number applications were variations of Base64 are used commonly such as email via ________, XML, and url encoding.
Domain Name SystemSimple Mail Transfer ProtocolMIMEInternet Message Access Protocol

Question 4: The ________ (Multipurpose Internet Mail Extensions) specification, lists "base64" as one of two binary-to-text encoding schemes (the other being "quoted-printable").
Domain Name SystemSimple Mail Transfer ProtocolMIMEInternet Message Access Protocol

Question 5: The current version of PEM (specified in RFC 1421) uses a 64-character alphabet consisting of upper- and lower-case ________ characters (A–Z, a–z), the numerals (0–9), and the "+" and "/" symbols.
Arabic alphabetPhoenician alphabetRunic alphabetLatin alphabet

Question 6: There are other variants that use '_-' or '._' when the Base64 variant string must be used within valid identifiers for programs, or '.-' for use in ________ name tokens (Nmtoken), or even '_:' for use in more restricted XML identifiers (Name).
XMLHTMLScalable Vector GraphicsXHTML

Question 7: ________, described first described in RFC 1642 (and later obsoleted by RFC 2152), introduced a system called Modified Base64.
UTF-8UnicodeGB 18030UTF-7

Question 8: Additionally it specifies that any extra-alphabetic characters must be ignored by a compliant decoder, although most implementations use a CR/LF ________ pair to delimit encoded lines.

Question 9: represented as an ________ byte sequence is encoded in MIME's base64 scheme as follows:
ISO/IEC 8859-1Windows-1252ASCIICode page 437

Question 10: Other variations, usually derived from Base64, that share this property but differ in the symbols chosen for the last two values; an example is ________.
UTF-7UnicodeGB 18030UTF-8

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