题目内容（请给出正确答案）

[主观题]

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

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

查看答案

如搜索结果不匹配，请联系老师获取答案

您可能会需要：

重置密码查看订单联系客服

安装赏学吧APP，拍照搜题省时又省心！

更多“About PTN device's alarm repor…”相关的问题

第1题

About selecting PTN device during engineering design, which of the following are corre

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.

点击查看答案

第2题

During creation of a tunnel in PTN device, the tunnel's next hop IP address is the

点击查看答案

第3题

Which of the following commands can be executed on ZTE's PTN device to check wheth

A.show interface vlan xxxx

B.show vlan xxxx

C.show vlan interface xxxx

D.show vla

点击查看答案

第4题

Busy CPU of a PTN device will lead to instability of ping and telnet, thereby causing

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

点击查看答案

第5题

About judging whether MAC address entries of PTN device are normal according to networ

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.

点击查看答案

第6题

bout encapsulation vlan and IP on ZTE's PTN devices, which of the following is cor

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.

点击查看答案

第7题

Which of the following statements are correct about the stream mirroring of PTN device

？()

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.

点击查看答案

第8题

About remote login to PTN device via telnet, which of the following are wrong?()

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.

点击查看答案

第9题

About usage of OAM in PTN device, which of the following is wrong?()

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.

点击查看答案

第10题

About congestion control, which of the following is wrong?()

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.

点击查看答案