H31-311_V2.5 Exam Questions

For management unit pointer adjustment, when VC>AU rate, which of the following adjustments will the device make?

Which of the following is the step for China to multiplex 2M into AUG?

For OSN products, changing which of the following parameters will cause the network element to reset?

The bits of the S1 byte represent the clock quality level. Which of the following indicates the highest clock quality level?

Compared with the dense wavelength division multiplexing (DWDM) system, the coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a tra...

The working mode of the port determines the flow control mode of the port. When the working mode is 100Mbit/s full-duplex, which of the following flow control modes can be used?

When configuring the OSN3500 with SXCS boards, which of the following is the access capacity of a fully configured subrack?

Which of the following statements about OTM-nm and OTM-nr.m, the optical layer interfaces of OTN are wrong?

Which of the following statements about Multiplexed Section Remote Error Indication (MS-REI) are correct? 1. The B2 byte indicates the transmission channel. 2. The M1 byte indicate...

Which of the following VC-4J1 bytes is indicated by the AU pointer of the current frame?

In WDM systems, when fewer than () wavelengths are used, it is ideal to use dielectric thin film filters (TFFs).

In the structure of SDH signals, there are large overhead sections for operations, administration, and maintenance (OAM): the overhead bytes account for () of all bits in the entir...

Which of the following bridges are used to forward data based on the MAC address and VLAN ID carried in the data?

In a 25GMSP ring consisting of four MSTP sites, which of the following statements about alarm reporting are correct when protection switching occurs?

Which of the following ITLI-T recommendations define the OTN frame structure?

The dual-fiber ring topology consisting of three network elements is arranged in counterclockwise order as AB, CA and the service between C occupies the 48th VC-12 time slot of the...

Which of the following statements about the sequence of signal flow between SDH interfaces and cross-connect units are correct?

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

AAC address consists of 46 bits and is globally unique. Which of the following is the meaning of a MAC address with the eighth bit being 1?

Which of the following statements about extended ECC is wrong?

Which of the following is not a northbound interface provided by U2000?

Which of the following is not an advantage of WDM?

Which of the following is not a nonlinear effect?

Which of the following is the function of TCM overhead in ODUk signal?

Which of the following bytes can be used for wired calls between two REG devices?

What is the frame structure of STM-16?

Which of the following statements about U2000 licenses is wrong?

The value of the MFAS byte increases with the sequence number of the OTUk/ODUk base frame and includes a maximum of () base frames.

The Raman amplifier uses which of the following effects?

The segment overhead of STM-4 is () bytes/frame.

In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and usage information of the clock source?

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

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

When Severely Errored Seconds (SES) occur in the PM portion of the ODUk layer, which of the following alarms will the NMS report?

In the network management system, the network element performance monitoring time is set to () minutes and () hours.

Which of the following is the multiplexing method of SDH?

Which of the following statements about clock sources is wrong?

It is not recommended to configure EPLAN services as a ring. If EPLAN services are configured as a ring network, the STP protocol must be enabled on the network to prevent broadcas...

If a network port that supports auto-negotiation is connected to a network port that does not support auto-negotiation, half-duplex and full-duplex modes can be interconnected.

When using a script to back up U2000 data, the backup speed is very fast because the backup file is small.

After the U2000 sends configuration data to the NE, if the SCC board verification fails, the NE enters the installation state.

Some SNCP protection switching conditions are default, such as AUAIS and TUAS. Other conditions are optional, such as HP-TIM and HP-SLM. Optional conditions can be flexibly set acc...

SES: There are 5% or more error blocks or at least one defect (OCI/AIS/LCKYAE/LTC/TIM/PLM) within one second.

When the ACT indicator light of the SDH board is off, it means that the board has a hardware failure and cannot be used.

The optical amplifier unit compensates for line losses and extends the transmission distance. Connecting multiple optical amplifier units in cascade mode can extend the transmissio...

LCK insertion takes precedence over AIS insertion. That is, if the user configures LCK insertion and the conditions for automatic AIS insertion are met, LCK is inserted.

When the U2000 is synchronized, the NE data that is the same as the U2000 is not uploaded to the U2000, and the data that exists on the 2000 but not on the NE is deleted.

In OSN550, the CX slot contains a function board integrating the system control and communication (SCC) unit, the cross-connect unit and the clock unit. There are many types of fun...

Forced switching, fiber switching, manual switching and motion switching are in descending order of priority.

The TAG attribute cannot be set for the internal port VCTRUNK of the board on the NMS.