Part of the routing table of router R1 is displayed below：
S 62.99.153.0/24 [1/0] via 209.177.64.130
172.209.12.0/32 is subnetted， 1 subnets
D EX 172.209.1
[170/2590720] via 209.179.2.114， 06：47：28， Serial0/0/0.1239
62.113.17.0/24 is variably subnetted， 2 subnets， 2 masks
D EX 99.3.215.0/24
[170/27316] via 209.180.96.45， 09：52：10， FastEthernet11/0/0
[170/27316] via 209.180.96.44， 09：52：10， FastEthernet11/0/0
25.248.17.0/24
[90/1512111] via 209.179.66.25， 10：33：13， Serial0/0/0.1400001
[90/1512111] via 209.179.66.41， 10：33：13， Serial0/0/0.1402001
62.113.1.0/24 is variably subnetted， 12 subnets， 2 masks
D 62.113.1.227/32
[90/2611727] via 209.180.96.45， 10：33：13， FastEthernet1/0/0
[90/2611727] via 209.180.96.44， 10：33：13， FastEthernet1/0/0
S* 0.0.0.0/0 [1/0] via 209.180.96.14
From analyzing the above command output， what is the administrative distance of the externalEIGRP routes？（）
A.24
B.32
C.90
D.170
E.27316
F.None of the other alternatives apply
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A.The neighboring router stops receiving ACK packets from this router
B.The neighboring router starts receiving route updates from this router
C.The neighboring router is too busy to answer the query （generally caused by high CPUutilization）
D.The neighboring router is having memory problems and cannot allocate the memory to processthe query or build the reply packet
A、The first 23 bits of the multicast MAC address are 0x01-00-5E. This is a reserved value thatindicates a multicast application
B、The last 3 bytes （24 bits） of the multicast MAC address are 0x01-00-5E. This is a reservedvalue that indicates a multicast application
C、To calculate the Layer 2 multicast address， the host maps the last 23 bits of the IP address intothe last 24 bits of the MAC address. The high-order bit is set to 0
D、The first 3 bytes （24 bits） of the multicast MAC address are 0x01-00-5E. This is a reservedvalue that indicates a multicast application
A.show ip ospf
B.show ip route
C.show ip protocols
D.show ip ospf database
E.None of the other alternatives apply
A.Layer 5
B.Layer 4
C.Layer 3
D.Layer 2
E.Layer 1
A.show ip protocol
B.show ip route
C.show ip ospfinterface
D.show ip ospf
E.show ip nterface
F.None of the other alternatives apply
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