多項選擇題Which of the following data structures exist on a router for the OSPF routing protocol?()

A.OSPF topology table
B.OSPF interface table
C.OSPF routing information base
D.OSPF link-state database
E.OSPF adjacency table
F.OSPF neighbor table


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A.Problem report
B.Problem collaboration
C.Problem diagnosis
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2.單項選擇題Which of the following virtual MAC addresses is correct for the HSRP group 22?()

A.0000.0c70.ac22
B.0000.0c07.22ac
C.0000.0c07.acl6
D.0000.0c07.ac22
E.0000.0c70.cala
F.0000.0d22.ac07

3.多項選擇題Which of the following are considered subcomponents of the problem diagnosis step of thetroubleshooting flow?(Choose all that apply.)()

A.Eliminate potential causes
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4.單項選擇題Which of the following is not a characteristic of Cisco Express Forwarding?()

A.The adjacency table is populated from a router’s ARP cache
B.CEF does not require the first packet of a data flow to be process switched
C.CEF maintains the Forward Information Base and the adjacency table
D.CEF can be enabled with the interface command ip cef
E.The FIB is populated from a router’s IP routing table
F.On most router platforms CEF is enabled by default

5.多項選擇題Which of the following is an unlikely reason for the ARP process to fail?()

A.CEF switching is disabled on the switch
B.The source device and destination device are in different VLANs
C.The VLAN is excluded from the trunk
D.The host is connected to the switch through an IP phone
E.A faulty cable from host to switch or between switches
F.The trunking encapsulation type is inconsistent on the two ends of the link

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