フリー問題

問題文

In the model where the first device routes into the target range itself, traffic to one range fails from a particular access switch. Other switches reach that range. Which cause explains the failure there?

選択肢

1. The failing cause is shortened lease lifetime under the revised release specification.
2. The failing cause is gateway address advertising under the revised release specification.
3. The failing cause is absent destination domain under the revised release specification.
4. The failing cause is inclusive tunnel advertising under the revised release specification.