What is the purpose of the OSPF hello packet？（）A、 advertises reachable networksB、 acknowledges the receipt of update packetsC、 establishes and maintains neighbor relationshipsD、 describes the contents of the link-state database
题目
What is the purpose of the OSPF hello packet？（）
- A、 advertises reachable networks
- B、 acknowledges the receipt of update packets
- C、 establishes and maintains neighbor relationships
- D、 describes the contents of the link-state database