PTN指的是（）

e ZXCTN600 as an example to illustrate.

A.packet classificatio

B.congestion management

C.congestion avoidance

D.traffic monitoring and traffic shaping

E.physical interface total rate limit

A.PON

B.OAM

C.DNN

D.ATM

A.IP化分组内核

B.大颗粒交换内核

C.光信号交换内核

rect？()

A.A MCC monitoring vlan and IP on all devices throughout the network can be exported to a file for backup.

B.A PTN device on which mcc vlan and ip have problems can use service encapsulation ip to log into another PTN device remotely in the network.

C.Service encapsulation vlan and ip will not be added into packet header when service packets are being forwarded in PTN network.

D.T31 system does not support creation of vlan with 3001 or above.

A. When AIS function is enabled and this site detects connection failure, it will insert FDI packet into customer layer in reverse direction of peer MEP site. Forwarding priority of FDI packets can be configured.

B.To test SSF alarm function, AIS function needs to be enabled.

C.When on-demand LM function is enabled, you can set local LM or peer LM function and parameters like packet forwarding priority, sending interval, report interval and test time.

D.Forwarding priority of CV packet can be set randomly.

A.PTN具有多种业务类型统一承载能力，采用packet作为交换核心，能够满足数据业务突发性、不定包长等特点

B.PTN在城域接入层、汇聚层采用三层层静态管道方式，便于全网合理规划使用宽带资源，易于业务路径掌控和故障定位等维护管理工作

C.PTN在城域核心层启用简化L3功能转发X2流量，避免在PTN网络间增加路由器设备，简化了网络架构、减少故障点等

D.PTN具有较强的QOS功能，能对TD-LTE业务进行登记区分和优先级管理

nge 2M/STM-1 CES service, which of the following precautions is wrong？()

A.Two sides should in advance negotiate service VLAN on NNI interconnection ports, bind interface IP address of this VLAN, and notify each other of service loopback address (corresponding to LSR ID of Huawei's PTN devices)

B.Tunnel labels of the two sides must be the same.

C.PW labels of the two sides may be different.

D.Packet delay (corresponding to packet load delay of Huawei) at two sides must have the same configuration. It is suggested both sides use 500us.

nge 2M/STM-1 CES service, which of the following precautions is wrong？()

A.Two sides should in advance negotiate service VLAN on NNI interconnection ports, bind interface IP address of this VLAN, and notify each other of service loopback address (corresponding to LSR ID of Huawei's PTN devices)

B.Tunnel labels of the two sides must be the same.

C.PW labels of the two sides may be different.

D.Packet delay (corresponding to packet load delay of Huawei) at two sides must have the same configuration. It is suggested both sides use 500us.