多项选择题

Which is true about OSPF router-id?（）

A.It is used for type 1 router LSA
B.Highest IP address of the loopback is used
C.router-id needs to be matched on ospf neighbors
D.router-id is 16 bit

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单项选择题

In a GLBP network, who is responsible for the arp request?（）

A.AVF
B.AVG(active virtual gateway)
C.Active Router
D.Standby Router

多项选择题

Which three features are added in SNMPv3 over SNMPv2? （）

A.Message Integrity
B.Compression
C.Authentication
D.Encryption
E.Error Detection