Unicode can be implemented by different character encodings. The most commonly used encodings are UTF-8, UTF-16 and the now-obsolete UCS-2. UTF-8 uses one byte for any ASCII character, all of which have the same code values in both UTF-8 and ASCII encoding, and up to four bytes for other characters. UCS-2 uses a 16-bit code unit (two 8-bit bytes) for each character but cannot encode every character in the current Unicode standard. UTF-16 extends UCS-2, using one 16-bit unit for the characters that were representable in UCS-2 and two 16-bit units (4 × 8 bits) to handle each of the additional characters. COUNT 5
QSN1 What are the most commonly used encodings of Unicode? ANS1 UTF-8, UTF-16 and the now-obsolete UCS-2 QSN2 What does UTF-8 use in terms of bytes?  ANS2 UTF-8 uses one byte for any ASCII character QSN3 What does UTF-16 expand?  ANS3 UCS-2 QSN4 What type of code does UCS-2 use? ANS4 16-bit code unit QSN5 How are two 16-bit units used?  ANS5 (4 × 8 bits