TMP OAM检测出T-MPLS 隧道是畅通的，但是PW业务是否正确创建时，就可以使用（)来检测。

is correctly created.

A. MPLS OAM

B.TMC OAM

C.T-MPLS OAM

D.TMD OAM

In T-MPLS OAM configuration, CC function can only be enabled after（)is enabled.

在T-MPLS OAM配置中，只有首先启用（)后才能启用CC功能。

A.T-MPLS OAM专用标签共4个字节，分别由Label、MEL、S、TTL字段组成

B.Label：20位比特，值为13

C.MEL：3位比特，值表示MEG层次，范围为0-7

D.S：1位比特，值总是为1，表示由OAM模块来处理的报文;TTL：8位比特TTL值，表示报文的跳数(hop-count)

A.ncontinuity check

B.nloopback

C.nAlarm indication signal

D.nremote defect indicatio

E. nlock

F.F. TST

A.连续性检查(CC)

B.环回(LB)

C.告警指示(AIS)

D.远程缺陷指示(RDI)

E.锁定(LCK)

F.测试(TST)

A.TMC OAM

B.TMP OAM

C.TMS OAM

D.以上都不是

A. LM is used to measure unidirectional or bidirectional frame. loss ratio from one MEP to another MEP.

B.DM is used to measure packet transport delay and delay variation from one MEP to another MEP.

C.Experimental (EX) function: send frame. for experiment use in a management domai

D.CSF is used to transmit failure signal at client layer from T-MPLS trail termination source to T-MPLS trail termination sink.

E. loopback link detectio