If PTN device is found not reporting alarms to EMS, you can execute()on the device to

t？()

A.To display current alarm of device correctly, the device needs to report current alarm to EMS actively. Therefore, necessary configuration for the device to actively report alarms must be correctly set.

B. Protection switching event alarm occurs at the instant when protection group switching happens, so it is not durative alarm. Therefore, after the alarm occurs, it is immediately saved in locking alarm. You can check it only in the locking alarms.

C. If EMS server timezone is different from PTN device timezone, alarm occurrence time on PTN device will be different from that on EMS. Therefore, during commissioning of PTN, you should set PTN timezone to be consistent with EMS timezone, usually local timezone.

D. None of the above

device must be reported to EMS side normally？()

A.snmp-server trap-source 63.5.1.1 (MCC IP of NE)

B.snmp-server host (mng) 192.168.254.253(ip of EMS server) trap version 2c public udp-port 162

C.snmp packetsize 8192

D.snmp-server enable trap SNMP

A.file list alarm

B.show chassis alarms

C.show chassis state

D.show hardware alarms

On T3 EMS, protection switching that PTN equipment can support include（),（),（), and pr

otection lock.

A．A.2

B．B.4

C．C.6

D．D.8

Before creating end-to-end PTN tunnel protection group on T3 EMS, enable （)function f

Before creating end-to-end PTN tunnel protection group on T3 EMS, enable ()function for each NE, otherwise the creation will fail.