多項選擇題For SONET ring switching, the 50ms switch time: Select all that apply?()

A.Plncludes the detection time
B.Applies to rings smaller than 1200km
C.Applies to rings smaller than 1000km
D.Includes up to 16 nodes


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2.單項選擇題What does FRTP stand for?()

A.Frame Relay Top Pseudowire
B.Frame Relay Traffic Pseudowire
C.Frame Relay Traffic Protocol
D.Frame Relay Traffic Policing

4.單項選擇題Which of the following is true regarding Label Distribution Protocol (LDP)?()

A.It is a label distribution protocol for MPLS
B.It is a set of procedures and messages by which LSRs establish Label Switch Paths (LSPs) through a network
C.Tag distribution Protocol (TDP) was the basis for LDP
D.All of the above are true