Completed Table:
| Character | ASCII value | Unicode value |
|---|---|---|
| w | 119 | 119 |
| x | 120 | 120 |
| y | 121 | 121 |
| z | 122 | 122 |
This question tests knowledge of character encoding, specifically ASCII and Unicode.
**ASCII (American Standard Code for Information Interchange):** This is a 7-bit character set (often stored in 8 bits/1 byte) that assigns numerical values to letters, numbers, and symbols. The codes for the lowercase alphabet are consecutive. Given that 'x' is 120:
- 'w' is one letter before 'x', so its value is 120 - 1 = 119.
- 'y' is one letter after 'x', so its value is 120 + 1 = 121.
- 'z' is two letters after 'x', so its value is 120 + 2 = 122.
**Unicode:** This is a much larger character encoding standard designed to represent characters from almost all of the world's writing systems. A key feature of Unicode is that its first 128 code points are identical to the ASCII character set for backward compatibility. Since 'w', 'x', 'y', and 'z' are all part of the original ASCII set, their Unicode values are exactly the same as their ASCII values.