フリー問題

問題文

While an adjacency is being built, the two routers first pass each other a compact list of the headers of the advertisements they already hold, so that each side can work out what it is missing. Which packet type carries that list?

選択肢

1. That list travels inside the acknowledgment packet during adjacency formation.
2. That list travels inside the link state update packet during adjacency formation.
3. That list travels inside the database description packet during adjacency formation.
4. That list travels inside the hello discovery packet during adjacency formation.