When creating an electrical layer path, what options (Client, ODUK, ODUflex) may cause the route calculation to fail

Unable to satisfy routing constraints

Routing resources are unavailable

Services cannot be created between ports

Unable to satisfy routing constraints

Routing resources are unavailable

The optical power attenuation on the service layer path OCH is too large

Services cannot be created between ports

Can't log in after NE is created, what are the possible reasons?

The NE user password is incorrect

The communication between the network management and the network element is abnormal

The NE user password is incorrect

The communication between the network management and the network element is abnormal

The time on the network element side and the network management side is different

When any of the following situations occurs, the ODUk_PM_DEG alarm will be reported on the NMS?

When the PM segment of the ODU layer is degraded by bit errors, and the number of error codes exceeds the specified bit error degradation threshold

When the number of errors in the PM segment of the ODU layer exceeds the limit, the number of errors exceeds the specified error threshold.

When the PM segment of the ODU layer is degraded by bit errors, and the number of error codes exceeds the specified bit error degradation threshold

The ODUkTCMng signal is degraded, and the number of bit errors exceeds the specified error threshold.

The error error of the ODUkTCMn layer exceeds the limit, and the number of error errors exceeds the specified error degradation threshold.

When it is found that the local end reports the ETH_LOS alarm, the fault can be located by the switch-back method. If the alarm disappears after the ODF loops back to the local end, which of the following may be the cause?

The peer board or pigtail is faulty

The local board or pigtail is faulty

When the device reports the PW_APS_DEGRADED alarm, what is the problem with the LTE service carried by the station?

One of the working protection channels fails

The working protection channel is invalid

None of the working protection channels fail

When the NE reports the TUNNEL_APS_OUTAGE alarm, what does it mean?

The tunnel protection group is interrupted, and the bearer services are interrupted

Tunnel protection group is degraded and the availability of the protection group is reduced

The tunnel protection group is interrupted, and the bearer services are interrupted

The tunnel protection group is switched, and the working channel is unavailable

The tunnel protection group is switched and the protection channel is unavailable

The working mode of the port determines the flow control mode of the port. Which of the following flow control modes can be used when the operating mode is 100 Mbit/s full duplex

Non-auto-negotiation flow control mode

Auto-negotiation flow control mode

Non-auto-negotiation flow control mode

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?

Switch to the protection channel

Test to see if the ring is normal

Verify that the APS protocol is enabled

Regarding the IS-IS backbone area, which of the following statements are correct?

It is composed of all L2 routers (including L1/L2)

Which one is correct about the description of MC-LAG on L2/13 nodes in LTE network?

The higher the active/standby priority value, the lower the priority

The L2VE interface can be directly selected as a member port of MC-LAG

Configurable to load burden mode

The higher the active/standby priority value, the lower the priority

The heartbeat is carried by unidirectional LSP and configured with 1:1 protection

Which statement about MPLS OAM is wrong?

Tunnel's OAM and PW OAM are related and affect each other

The hardware supports the transmission of messages

Support real-time monitoring of performance events such as packet loss rate and delay

Can be used to trigger protection switching

Tunnel's OAM and PW OAM are related and affect each other

Which of the following statements about MST functional modules are true?

MST is both the source and sink of MS

MST provides its rdenire channel.

MST is both the source and sink of MS

MST implements BIP-8 statistical calculation of B2 bytes.

MST returns bit error information, but does not return a specific number of bit errors.

MST provides its rdenire channel.

Which of the following statements is incorrect about the optical layer interfaces OTM-nm and OTMnrm of OTN?

m represents the rate. Value can be 1.2 or 3.

n represents the number of wavelengths carried by the maximum capacity,

m represents the rate. Value can be 1.2 or 3.

r means OTM without OSC function

OTM-nr.m with OSC signal is OTM-nm.

Which item is wrong about the description of PTN network MC-PWAPS protection features?

DNI-PW can only be used to transmit base station traffic

DNI-PW supports multi-hop, but single-hop PW is recommended for service deployment

The existing network is generally not linked with MCLAG

Regarding PW labels and tunnel labels, which of the following statements are correct?

Tunnel label is mainly used for transmission in the tunnel, it mainly uses the tunnel label to establish MPLS tunnel

They are all based on MPLs tags

PW signing only needs negotiation between the source and sink network elements, and has nothing to do with the intermediate tansit network elements

PW labels are mainly used to distinguish PWs, but for CES services, because CES services do not support aggregation, there is no need to use PW labels

Tunnel label is mainly used for transmission in the tunnel, it mainly uses the tunnel label to establish MPLS tunnel

They are all based on MPLs tags

PW signing only needs negotiation between the source and sink network elements, and has nothing to do with the intermediate tansit network elements

Regarding the function of backing up and restoring all data in the network management database, which of the following statements is correct?

Data backed up by different versions and different types of operating systems cannot be recovered from each other

Data backed up by different versions and different types of operating systems can be recovered from each other

Data backed up by different versions and different types of operating systems cannot be recovered from each other

The data of the same version and the same type of database backup cannot be recovered from each other

Data from different versions and different types of database backups can be recovered from each other

Regarding the operation of deleting the path from the network management, which of the following statements is wrong?

After the path is deleted from the network layer and the network element, the service will be interrupted

Deleting a trail from the network layer only deletes the WDM trail at the network layer on the NMS side

Delete the path from the NE layer. Delete the path on the NE side and the NE layer together.

Once the network layer deletes the trail, the service will not be interrupted

After the path is deleted from the network layer and the network element, the service will be interrupted

Regarding electrical layer service configuration, which of the following statements is false?

After the logical fiber connection is completed, no path search operation is required, and the OTS path and OMS path can be automatically generated

When the Och service path exists, create an OTUk path directly, and the network management can automatically create the OTUk path

If there is an Och service path, you can first search for the OTUk path, create the ODUk service layer path, and then create the Client path.

When the Och service path exists, directly create the OTUk path, and the network management can automatically create the OTUk and 0DUk paths.

Which items are correct about the description of Huawei's PTN6900 E-Trunk?

The active and standby devices periodically send Hello packets to each other

The ID of the E-Trunk is used to identify an E-Trunk

Able to achieve link aggregation across devices

The higher the priority value of the E-Trunk, the higher the priority.

The active and standby devices periodically send Hello packets to each other

The ID of the E-Trunk is used to identify an E-Trunk

Able to achieve link aggregation across devices

Regarding the comparison of Raman amplifiers with EDFAs, which of the following statements is false?

The gain calculation/testing method of Raman amplifier and EDFA is consistent, both are "gain = output power - input power

The Raman amplifier selects different pump sources to amplify signals in different bands, so the Raman amplifier has no gain bandwidth limit in theory, while the EDFA has a range of gain bandwidth

The gain calculation/testing method of Raman amplifier and EDFA is consistent, both are "gain = output power - input power

The gain medium of Raman amplifier is transmission fiber; the gain medium of EDFA is EDF (Erbium Doped Fiber)

The equivalent noise figure of a Raman amplifier is smaller than that of an EDFA

What are the possible reasons for the failure of route calculation by the optical layer path (OCh level)?

The optical fiber is connected incorrectly. The wavelength of the WDM side port of the OTU board is inconsistent with the wavelength of the optical crossover.

Network layer OTS path is missing

The fiber attenuation between the TDC and RDC ports of the OAU board is too large

The optical fiber is connected incorrectly. The wavelength of the WDM side port of the OTU board is inconsistent with the wavelength of the optical crossover.

Network layer OTS path is missing

The fiber attenuation between the TDC and RDC ports of the OAU board is too large

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?

The optical cable fusion sequence is wrong

The fiber optic cable is blocked

Huawei H35-260 Practice Test 3 - Free Online Exam Prep & Questions

Whether it is the OSI reference model or the TCP/IP protocol, the existence of the data link layer is mainly to realize which of the following functions?

Bitstreaming

Addressing and Routing

Provide media access

Establish a host end-to-end connection

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