单选题According to JUNOS software route selection algorithm， which IS-IS route type is most preferred？（）ALevel 1 internal routesBLevel 1 external routesCLevel 2 internal routesDLevel 2 external routes
单选题
According to JUNOS software route selection algorithm， which IS-IS route type is most preferred？（）
A
Level 1 internal routes
B
Level 1 external routes
C
Level 2 internal routes
D
Level 2 external routes
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