フリー問題

問題文

A design for a point to point service across a core asks what carries the traffic through the middle. Which answer does the documentation give as the usual one, with room for another?

選択肢

1. The usual carrier is the label swapping core, and another is a wrapping over plain routes
2. The usual carrier is the label swapping core, and another is a wrapping held in a site
3. The usual carrier is the label swapping core, and another is a wrapping tied to an older link
4. The usual carrier is the label swapping core, and another is a wrapping for the idle paths