When setting up LCAS mode, follow these principles:

1. If both ends of the device are Huawei devices, please set it to "Standard Mode".

2. If a Huawei device is interconnected with a third-party device, set the interconnect device to the same mode according to the mode supported by the third-party device.

NE A and NE B are adjacent NE

If B3 and low-order errors occur in the A->B direction, and B1, B2, B3, and low-order errors occur in the B->A direction, it is caused by Which of the following performance events does NEA report? (Multiple choice).

If the overhead bytes pass through two plugged backplane buses, then the two slots are called paired slots that enable automatic transparent transfer of overhead bytes, such as (), () and (). Even if the SCC on the local network element The board is offline, which can also improve msP switching performance and protect DCC communication with other network elements. (Multi-quality selection).

The scope of management of OMSn is the path from the input optical port on the multiplexer unit of the sending site to the output optical port on the multiplexer unit of the receiving site, called the optical multiplexing segment (OMS) path.

The backplane has two 48V power cords, and each board gets two -48V power supplies from the backplane. After combining the power supply via diodes, the various voltages required for each component are obtained by means of a DC/DC power module and a linear mane swap.

Which of the following is the difference between an AU pointer and a TU pointer? (Multiple choice).

The SP3D board supports 63 E1 services

In the Windows operating system, the log files of the U2000 program are stored in the () directory of the U2000 installation disk.

The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.

Which of the following statements about the clock source are incorrect?

SDH signals must be scrambled before they can be transmitted over optical fibers. Which of the following bytes is not scrambled? (Multiple choice).

In WDM systems, it is ideal to use a dielectric thin problem filter (TFF) when using less than () wavelengths.

Which of the following statements about signal label byte C2 are incorrect?

Which of the following is the default WTR time for MSP switching?

Which of the following statements about the U2000 license is incorrect?

Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?

Measure the error correction capability of fec with encoded gain. Which of the following statements about the coding gain is incorrect?

Suppose 2 VC-12 time slots need to be bound to the VCTRUNK1 of the N2EFS4 board. When there are 8 VC4 slots on the N2EFS4 board, which of the following slots meets the requirements?

Which of the following is the meaning of SFD in the Ethernet frame structure?

Which of the following can be configured as the monitoring time for network element performance events?

Which of the following is the feature of TCM overhead in ODUk signals?

Only one TCM can be used at one site

When there is a Critical Error In Seconds (SES) in the PM portion of the ODUk layer, which of the following alarms is reported by NMS?

In the frame structure of the SDH signal, there are large overhead bytes for operation, management, and maintenance (OAM). Overhead bytes account for all bits () of the entire frame and greatly enhance the monitoring capabilities of the network.

A PAUSE frames use reserved multicast addresses and are not forwarded by bridges or switches. In this way, the PAUSE frame does not generate any additional information.

When the low-level resources of the device are insufficient, which of the following measures can be taken? (Multiple choice).