In PTN network, ring network protection includes wrapping and steering. In wrapping r

The PTN device supports the ring network protection mode:（) PTN6000 V2.0 and later sup

port another ring network protection mode: ().

A.MPLS

B.OAM

C.APM

D.APS

A.device protection

B.wrapping protection

C.link protection

D.steering protection

ing network protection, when a node on the network detects network failure, it sends switching request to the other node adjacent to the failure at the other side through APS protocol. ()

此题为判断题(对，错)。

A.device protectio

B.wrapping protectio

C.link protectio

D.steering protectio

A.Device level protection involves main control switch board protection, power board protection and TPS protection. If possible, configure a protection board for each of them.

B.LSP linear protection, PW dual homed protection and ring network protection can be adopted on site for network side protection.

C.LACP protection usually applies to devices at core layer.

D.Switching in all protection modes supported by ZTE's devices can be implemented within 50ms.

ng are correct？()

A. Two adjacent ports of a link on 10GE ring belong to one VLAN domain and one IP network section.

B.All PTN devices should be enabled with service loopback address as NE ID in service forwarding plane. This loopback must be unique globally.

C.Service encapsulation VLAN ID is in range of 17～3000 and it is suggested to start from 101

D.VLAN IDs of nonadjacent link segments can be the same

In GE ring, for PTN, the number of nodes should not exceed（)while for IP RAN, the numb

er of nodes should not exceed()

A.Tunnel标签

B.Ring标签和Tunnel标签

C.Ring标签