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單項(xiàng)選擇題

Into which protocol are LDP hello messages encapsulated?（）

A. ICMP
B. BFD
C. UDP
D. MPLS

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多項(xiàng)選擇題

Given the community: community my-company members "^[1-3]*7:666$"; Which three communitiesdoes this expression match?（）

A. 17:666
B. 17:667
C. 27:666
D. 37:666
E. 47:666

多項(xiàng)選擇題

Which three components are part of the Network Entity Title (NET) on an IS-IS router?（）

A. AFI
B. MAC
C. area
D. N-Selector
E. IP address

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