フリー問題

問題文

A campus rollout has to push the same block of configuration lines to switches from three different suppliers, and each supplier shows a different prompt and a different pager. The engineer does not want to write prompt handling by hand. Which pair states which layer the plan works against and which layer stays below it?

選択肢

1. The login dialog differs per supplier, so the plan works against session wrappers and keeps raw bits below that layer in that specification.
2. The login dialog differs per supplier, so the plan works against session buffers and keeps raw bits below that layer in that specification.
3. The login dialog differs per supplier, so the plan works against session buffers and keeps raw channels below that layer in that specification.
4. The login dialog differs per supplier, so the plan works against session wrappers and keeps raw channels below that layer in that specification.