EIGRP uses five generic packet types （hello， updates， queries， replies， acknowledgements）. If youwished to view the statistics for these packets， which IOS command should you use？（）

A.Some query or reply packets are lost between the routers
B.The neighboring router starts receiving route updates from this router
C.A failure causes traffic on a link between two neighboring routers to flow in only one direction（unidirectional link）
D.The neighboring router stops receiving ACK packets from this router

A.The no auto-summary command has not been issued under the EIGRP process on bothrouters
B.Interface E0 on router R1 has not been configured with a secondary IP address of 10.1.2.1/24
C.EIGRP cannot exchange routing updates with a neighbor’s router interface that is configuredwith two IP addresses
D.EIGRP cannot form neighbor relationship and exchange routing updates with a secondaryaddress

A.network 10.0.0.0
B.network 10.10.0.0 mask 255.255.0.0
C.network 10.10.10.1 mask 255.255.255.255
D.network 10.10.10.0 mask 255.255.255.0
E.network 10.0.0.0 mask 255.255.0.0