The public address can be invalid when randomly generated, ie. the address can be 127, or 224 and higher. While 224 and higher fall under classes D and E, and are technically valid, they shouldn't be included as this is meant for students to practice and they are most likely taught that they are invalid.
Lule-M
commented
2 hours ago
The public address can be invalid when randomly generated, ie. the address can be 127, or 224 and higher. While 224 and higher fall under classes D and E, and are technically valid, they shouldn't be included as this is meant for students to practice and they are most likely taught that they are invalid.