When a PTN device is upgraded from non-agent version into agent version, PW control fi

A.updatever config

B.updatever download

C.updatever tryru

D.updatever activate

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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.

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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

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.

A.To create TREE service, select UNI node type. Make sure at least one UNI is root node while other UNIs are leaf nodes

B. To select endpoint for end-to-end PTN Ethernet service, first select NE and then corresponding port or UNI interface

C. To create TREE service, all CIP/VIP nodes have leaf attributes and root attributes when ZXCTN6000 device acts as root node

D. To create TREE service, all PWs and CIPs have hub attributes and spoke attributes when ZXCTN9000 (2.08 32R1) acts as root node

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.