| |||
| 询问和应答 | |||
| 询问与应答 | |||
|
challenge-and-reply : 4 phrases in 3 subjects |
| Cryptography | 1 |
| Information technology | 2 |
| Telecommunications | 1 |
| |||
| 询问和应答 | |||
| 询问与应答 | |||
|
challenge-and-reply : 4 phrases in 3 subjects |
| Cryptography | 1 |
| Information technology | 2 |
| Telecommunications | 1 |