What OSPF command, when configured, will include all interfaces into area 0?（）

单项选择题Refer to the exhibit.If the router Cisco returns the given output and has not had its router ID set manually, what value will OSPF use as its router ID?（）

A.192.168.1.1
B.172.16.1.1
C.1.1.1.1
D.2.2.2.2

单项选择题A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?（）

A.the port-channel 1 interface
B.the highest number member interface
C.all member interfaces
D.the lowest number member interface

单项选择题What parameter can be different on ports within an EtherChannel?（）

A.speed
B.DTP negotiation settings
C.trunk encapsulation
D.duplex

单项选择题What authentication type is used by SNMPv2?（）

A.HMAC-MD5
B.HMAC-SHA
C.CBC-DES
D.community strings

多项选择题What are two enhancements that OSPFv3 supports over OSPFv2? （）

A.It requires the use of ARP.
B.It can support multiple IPv6 subnets on a single link.
C.It supports up to 2 instances of OSPFv3 over a common link.
D.It routes over links rather than over networks.