单项选择题

Based on the show ip route isis output on R1, which statement is true? （）

A. The i su 10.1.0.0/23 route is a suppressed route.
B. The i su 10.1. 0.0/23 route is a summary route.
C. The i su 10.1.0.0/23 route is an IS - IS external route.
D. The R1 IS - IS router is an ASBR.
E. The R1 IS - IS router is an ABR that belongs to multiple IS - IS areas.
F. The R1 IS - IS router is performing route aggregation and is suppressing the more specific 10.1.0.0/23 prefix.

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单项选择题

Given the network diagram, which routers currently make up the IS - IS backbone?（）

A. R3,R4,R6
B. R2,R3,R6,R7
C. R1 through R8
D. R3,R4,R5,R6
E. R2,R3,R4,R6,R7

多项选择题

IS - IS is often considered an alternative to OSPF in the IP world. Which two statements identify similarities between IS -IS and OSPF?（）

A. support for designated intermediate systems and backup designated intermediate systems
B. support for multip le areas per router
C. support for classless routing
D. support for address summarization between areas
E. support for both DIS adjacencies and neighbor adjacencies

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According to the following output, can you tell me which command can redistribute IGRP into EIGRP?（）

A. Under t he router eigrp mode add redistribute igrp 123 subnets
B. Under the router igrp mode add redistribute eigrp 123
C. None, EIGRP and IGRP are automatically redistributed in this instance.
D. Under the router eigrp mode add redistribute igrp 123