問題文
An engineer compares two advertisement kinds: one is flooded only within a single area, and the other is flooded throughout the whole OSPF domain except into areas that refuse external information. Which pair matches that contrast?
選択肢
- The contrast separates request messages from update deliveries in flooding scope.
- The contrast separates database checksums from sequence counters in flooding scope.
- The contrast separates router descriptions from external destination injections in flooding scope.
- The contrast separates hello exchanges from acknowledgment replies in flooding scope.