About PTN device's alarm report function in EMS, which of the following are correc

A.6100 serves as devices at convergence layer.

B.9000 is used at core layer.

C.6200 is used at access layer and convergence layer.

D.6300 is used at convergence layer.

A.show interface vlan xxxx

B.show vlan xxxx

C.show vlan interface xxxx

D.show vla

disconnection from EMS. If possible, you can log in the device’s command line and execute command()to check CPU utilization.

k situation on site, which of the following is wrong？()

A.Execute Show lacp sys-id to check MAC address of local device rack, which is just the static MAC used for basic configuration of the device

B.Execute command show mac to check service MAC of peer device.

C.Execute command show lldp neighbor to display MAC of local device port, interconnected peer device port and its rack.

D.Execute show arp to show arp entries, which mark mac address and interface.

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.The exit ACL supports stream mirroring.

B.The stream can be mirrored to the input port or CPU.

C.Stream mirroring means that only green packets are mirrored after speed limit. If all the packets are yellow after speed limit, it is also applicable to yellow packets.

D.Stream mirroring is performed after priority labeling. Packets mirrored have been labeled with priority flag.

A.Execute Show running-config | include telnet to check parameters of telnet line

B. Execute Show running-config | include snm-server packersize to check parameters of snmp-server packetsize

C. Execute Show running-config | begin interface fei_1/1 to check whether corresponding port has been enabled with jumbo frame. function.

D. Execute Show running-config | begin tunnel group to check info of all protection groups.

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.Traditional packet loss policy is tail-drop. When length of a queue reaches a maximum value, all new packets will be dropped.

B.In RED algorithm, each queue is set a pair of low and high limit values. When length of the queue is lower than the low limit, packets will not be droppeD.When the length exceeds the high limit, all packets will be droppeD.When the length is between low limit and high limit, packets will be dropped randomly.

C.Random number generated by WRED is based on priority. It introduces IP priority differentiated drop policy, so probability of dropping packets with high priority is small.

D.Currently, default congestion control for PTN device is Radom-Drop.