There are five trigger conditions for the execution of protection switching. According to the priority of the trigger conditions, they are arranged from high to low. Which of the following is correct?
Which of the following descriptions about optical line protection OLP are wrong?
optⅸ Datacollector supports black box fault data collection of multiple products. Which of the following products is not supported?
TCP provides connectionless-oriented, best-effort transport services
Which of the following descriptions about the possible reasons for PTN upgrade loading or activation failure are correct?
In the CES service, which of the descriptions of "packet loading time" and "jitter buffer time" is wrong?
In order to determine whether the optical fiber lines and connectors on the wavelength division side are normal, which of the following loopback methods is most suitable?
Which of the following light source technologies does the 100GOTU board use?
Which of the following protections are protected by electrical layer double transmission and selective reception?
Which of the following combinations of dynamic optical add/drop multiplexing boards does not hold?
Which of the following descriptions about optical power commissioning is wrong?
What are the values of each wavelength in the composite signal that the spectrum analyzer is mainly used for?
Where in the L2/L3 node is the VLAN in the Layer 2 header stripped in the packet sent by the base station in the LTE solution?
Which of the following does not belong to the multi-level connection monitoring mode of OTN
The services carried by PWE3 need to be sensed by the internal nodes of the PSM network.
When the PTN equipment configures the CBS parameters of QoS, the value affects which items are described correctly
Which of the following descriptions about the reasons for the continuous adjustment of network element pointers is correct?
In CES SATOP encapsulation, PWE3 will transparently transmit 32 time slots of an E1 frame as a whole from one end to the other
What are the reasons for the R-Los alarm reported on the 0TU board?
What are the possible reasons for the unsuccessful OCH creation by the path method?
When the PTN device forwards, how many bits does the MAC address have?
Which of the following does not belong to L3VPN?
Which of the following functions does Netstar ODT have?
NE1 and NE2 are the intersection nodes of the SNCP ring and the SNCP ring. How many SNCP protection groups and how many unidirectional cross-connects should be configured on NE1.
Which of the following is correct?
During the troubleshooting process, if you need to loopback the protected services carried by the NG WDM device, which of the following operations need to be performed first when performing the loopback
operation?
NE1 and NE2 are the intersection nodes of the SNCP ring and the SNCP ring, so how many SNCP protection groups and how many unidirectional cross-connects need to be configured on NE1.
Which of the following is correct?
When the device reports the PW_APS_DEGRADED alarm, what is the problem with the LTE service carried by the station?
Regarding PW labels and tunnel labels, which of the following statements are correct?
In the SDH system, we can use the instrument to test the input jitter tolerance of the STM-N interface. Which of the following instruments can complete this function?
If the E1 interface board D75S is not plugged into the OSN 3500 hardware, which indicator light on the PQ1 will light up red?
When PTN carries LTE services, it forwards packets based on MPLS label switching. In the MPLS label, which identification field can be used as a PTN to distinguish the label
at the bottom of the stack?
Which of the following statements about optical line protection OLP is wrong?
Which of the following is the destination MAC address of the Layer 2 header of the data received by the PTN960 from the LTE base station?
Which of the following services can be processed by MP1 processing board?
Regarding the function of backing up and restoring all data in the network management database, which of the following statements is correct?
After the optical cable is cut, the optical power is normal and there is no ETH_LOS alarm, but the TUNNEL_LOCV alarm is not cleared. What is the most likely cause?
Which of the following are the possible causes of PW failures in the network?
In the MPLS label field of the PTN network, which item is the identification field of the stack bottom label?
The 802.1Q tag header contains a two-byte TPID. Which of the following is its standard value?
Which of the following item levels are included in the MPLS-TP OAM detection object?
In order to support the self-opening of the base station, the DHCP Relay function is deployed in the PTN LTE bearer network. Which of the following descriptions is wrong?
The DWDM system has extremely high requirements on the stability of the light source. Which of the following factors will affect the stability of the light source?
The MPLS label has four identification fields, Lable, EXP, S and TTL, with a total of 4 bytes, of which Lable occupies 20 bits. The label value 0-15 is reserved for special purposes,
which indicates that the inner payload carried is MPLS-OAM packet. , the label value is which of the following?
When configuring electrical cross-connect services on NG WDM equipment, the client-side service types at both ends of a bidirectional service must be consistent.
The multi-level connection monitoring mode (TCM) of OTN has three application forms. Which of the following is correct?
Now NE1 and NE2 form a chain network, and E1 service is configured between NE1 and NE2. One day, the fiber from NE1 to NE2 is interrupted (each segment of the
reverse fiber). Which of the following alarms will NE2 report?
Which of the following LSRs are passed by an LSP?
OptiX OSN 6800 supports centralized crossover and distributed crossover. When two kinds of crossovers exist, the system prefers to use centralized crossover