H31-311_V2.5 Sample Questions Answers

SES: There are 5% or more of the False blocks or at least one defect (OCI/AIS/LCK/IAE/LTC/TIM/PLM) in one second.

During service configuration, there are two time slot modes. Huawei uses interleaved time slot mode by default.

Which of the following statements about the MSP ring is correct? (Multiple choice).

PDM uses a polarization beam splitter to divide the laser into two vertical directions: x and y.

The device IP address of the gateway element and the non-gateway element must be set in the same network segment.

EPL services use bandwidth exclusively on the line, which is very safe. Dedicated line applications for VIP customers

When using the LCAS function, which of the following overhead bytes is used to transmit control information? (Multiple Choices)

What of the following operations may interrupt the network element service? (Multiple choice).

Which of the following statements about overhead bytes is incorrect?

When you configure services on a per-NE basis, which of the following protection scenarios does not require subnet configuration before subsequent protection operations?

STM-64 has an () AU pointer.

According to ITU-T's recommendations, the requirement that the MSP switching time should be within 50ms is conditional. For example, the number of net elements on the entire ring network is less than 16.

The SP3D board supports 63 E1 services

When configuring LMSP, there are two switching modes: single-ended switching and double-ended switching. Single-ended switching does not require the protection protocol to be enabled.

The following is the frame structure of the STM-16?

The STAT indicator of the SDH board flashes red, lights up for 100ms, and turns off for 100ms. Which of the following means the state of the metric?

The optical amplifier unit compensates for line losses and extends the transmission distance. Connecting multiple optical amplifier units in cascaded mode allows for extended transmission distances without following the system.

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.

For 100G (112Gbit/s) signals, the actual data baud rate is only 28G amplitude.

Which of the following methods can be used to multiplex low-order ODUK to higher-order ODUk?

Fiber loss includes bending loss, absorption loss and scattering loss.

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

The receiver performs a BIP-8 check on unscrambled STM-16 frames. If the BIP8 check result XOR·∶, the value of the B1 byte contained in the next STM16 ring is 10001100, which indicates STM-16 There is a () bit False block in the axis.

The clock unit can only access the external clock source as the timing signal source of the system through the external clock interface. In addition; It can also output a processed clock and provide a clock source for other devices that need timing.

Which of the following statements about the OTM-n .m and OTMnr .m for OTN are incorrect?

WDM transmits optical signals multiplexed at multiple rates (wavelengths) through a single optical fiber, and the digital signals carried by these optical signals must have the same rate and data format

Configuring the EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring network, the STP protocol must be enabled on the network to prevent broadcast storms.

Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).

Optical module parameter "L-64.2" in "2" indicates which of the following working windows?

RSOH, MSOH, HPOH and LPOH implement the monitoring function in descending order of the monitoring fan country.

Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for the protection channel in 1:1 mode of the LMSP.

Which of the following local maintenance endpoints can be used to manage MSTP devices?

Bait-doped fiber amplifiers (EDFAs) are a key component of the new generation of optical communication systems. Which of the following is the feature of EDFA? Multiple Choice) □

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

Which of the following is the VLAN classification method? (Multiple choice).

Single-fiber bidirectional WDM systems use only one optical fiber to transmit optical signals in both directions at the same time. Light signals in both directions should be arranged at different wavelengths.

TU-AIS is often encountered during network maintenance. Which of the following alerts can trigger a TU-AIS alert? (Multiple choice).

The 1510nm optical monitoring channel can be effectively amplified after passing through EDFA.

Manual configuration will clear the data on the NE side

Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?

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).

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.

Which of the following is affected by changing the element ID of OSN3500 on NMS?

The Raman amplifer uses which of the following effects?

NE A and NE B are adjacent NE

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

K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.

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 alerts does not trigger an AU-AIS alert?

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

Which of the following maintenance signals is transmitted from the downstream site to the upstream site of the OTN?

OChr means the use of electrical monitoring technology.

Which of the following are the components of the WDM system summer with N glass lengths? (Multiple choice).

Which of the following is not the advantage of WDM?

Which of the following is the steps to multiplex a low-speed service into a high-speed SDH service? (Multiple choice).

Which of the following is the basic requirement of the DWDM system in the light source?