多项选择题

SONET’s three layers are（）.

A.Section
B.Line
C.Frame
D.Path
E.DS1

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单项选择题

A.IP source address is forged
B.IP destination address is forged
C.IP TCP source port is forged
D.IP TCP destination port is forged
E.None of above

多项选择题

A.MP-BGP routing
B.Static routing
C.Policy routing
D.Autoroute
E.Forwarding adjacency

单项选择题

A.MP-BGP
B.LDP
C.Directed LDP
D.MTP
E.BGP
F.IGP