多选题Which of the following statements are correct in regard to classless routing protocols?（）ADiscontiguous subnets are not allowed.BVariable length subnet masks are allowed.CRIP v1 is a classless routing protocol.DIGRP supports classless routing within the same autonomous system.ERIP v2 supports classless routing.
多选题
Which of the following statements are correct in regard to classless routing protocols?（）
A
Discontiguous subnets are not allowed.
B
Variable length subnet masks are allowed.
C
RIP v1 is a classless routing protocol.
D
IGRP supports classless routing within the same autonomous system.
E
RIP v2 supports classless routing.
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