单项选择题

Which IS - IS router is equivalent to an ABR in OSPF?（）……

Which IS - IS router is equivalent to an ABR in OSPF?（）

A. Level 2 - 3
B. Level 1 - 2
C. Level 2
D. Level 0
E. Level 3
F. Level 1

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多项选择题During a redistribution of routes from OSPF into EIGRP, an ad ministrator notices that none of the OSPF routes are showing in EIGRP. What are two possible causes?（）

A. incorrect distribute lists have been configured
B. missing ip classless command
C. CEF not enabled
D. no default metric configured for EIGRP

单项选择题If a metric is not specified for routes that are redistributed into OSPF, the defaul t metric that is assigned to the routes is 20, except for redistributed BGP routes. What is the metric that is assigned to redistributed BGP routes?（）

A. 200
B. 0
C. 1
D. 10

单项选择题Refer to the exhibit. Which interoperability technique implemented on the dual - stack routers would allow connectivity between IPv6 sites across automatic created tunnels using the 2002:: 16 prefix? （）

A. Dual Stack
B. NAT - PT
C. 6to4 tunnel
D. GRE tunnel
E. ISATAP tunnel

单项选择题Refer to the exhibit. EIGRP has been configured on al l routers in the network. The command metric weights 0 0 1 0 0 has been added to the EIGRP process so that only the delay metric is used in the path calculations. Which router will R1 select as the successor and feasible successor for Network A?（）

A. R 4 becomes the successor for Network A and will be placed in the routing table. R2 becomes the feasible successor for Network A
B. R4 becomes the successor for Network A and will be included in the routing table. No feasible successor will be selected a s the advertised distance from R2 is higher than the feasible distance
C. R2 becomes the successor and will be placed in the routing table. R4 becomes the feasible successor for Network A
D. R2 becomes the successor and will be placed in the routing t able. No feasible successor will be selected as the reported distance from R4 is lower than the feasible distance

单项选择题What is the MAC address that comes from the multicast address 239.255.0.1?（）

A. 01 - 00 - 5e - 7f - 00 - 01
B. 01 - 01 - ef - ff - 00 - 01
C. 00 - 00 - 00 - 7f - 00 - 01
D. 10 - 00 - ef - ff - 00 - 01