A.An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.
B.The ARP cache was cleared.
C.The counters were cleared.
D.The IP EIGRP neighbor relationship was cleared manually.
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A.A BGP router can only advertise an EBGP learned route，provided that the route is an IGP route in the routing table.
B.A BGP router can only advertise an IBGP learned route，provided that the route is an IGP route in the routing table.
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A.static route needs to be added
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C.bgp backdoor command
D.ospf backdoor command
A.hostTopN
B.matrix
C.statistics
D.history
E.packet capture
F.host
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如何實(shí)現(xiàn)擁塞避免？
The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）
What is the next state of initial in spanning-tree protocol？
As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）
hsrp speak狀態(tài)是什么意思？
DHCP SERVER在給一個(gè)網(wǎng)段設(shè)置POOL時(shí)，該網(wǎng)段路由器接口地址能不能放入POOL，能why，不能why。
A default Frame Relay WAN is classified as what type of physical network?（）
當(dāng)將多個(gè)交換機(jī)加入到MST region當(dāng)中會(huì)發(fā)生什么（what happen）？
what is four ospf area type？
what is the advantage of policing opposite to shaping？