IS - IS creates and maintains adjacencies and neighbor relations by using the Hello protocol. For the following options, which are Hello packets used in IS - IS?()
- A A generic Hello
- B Point - to - point Level 1, point - to -point Level 2, LAN Level 1, LAN Level 2
- C Point - to - point Level 1, point - to - point Level 2, LAN
- D Point - to - point, LAN Level 1, LAN Level 2