H31-311_V2.5 Exam Questions
702 real H31-311_V2.5 exam questions with expert-verified answers and explanations. Page 9 of 15.
- Question #401WDM/OTN Principles
The outer electrons of the bait ion have a three-level structure, among which the metastable energy level is which of the following?
EDFAerbium ion energy levelsmetastable statethree-level structure - Question #402Huawei Transmission Equipment Introduction
The OptiXtrans DC908 chassis is only equipped with 1 sCc board and 1 PANEL board and cannot be configured as 1+1 dual master control.
OptiXtrans DC908sCc boardmaster controlchassis configuration - Question #403SDH Transmission Principles
The LOI low-level interface includes multiple logical function blocks. Which of the following does not belong to the function blocks in the LOI low-level interface?
LOI interfacelogical function blocksSDH overheadSPI - Question #404SDH Transmission Principles
The correct statement about the multiplex section remote error indication MS-REI is (): 1. B2 byte is the transmission channel; 2. M1 byte is the transmission channel; 3. sent back...
MS-REImultiplex sectionB2 byteM1 byte - Question #405SDH Transmission Principles
Which of the following descriptions about signal marker byte C2 is wrong?
C2 bytesignal labelVC-4path overhead - Question #406Optical Fiber Communication Fundamentals
Which of the following media types has a transmission distance of no more than 1 km?
optical media types10GBASE-SRtransmission distancefiber interface standards - Question #407Huawei Transmission Equipment Introduction
Which of the following descriptions about the TNG2M 402D board is wrong?
TNG2M 402D boardwavelength conversionASONODUk protection - Question #408Huawei Transmission Equipment Introduction
According to the OTU board naming rules, which of the following descriptions of the letters in the MS04 board is wrong?
OTU board namingMS04board nomenclatureWDM side port - Question #409WDM/OTN Principles
Which of the following is not an advantage of EDFA?
EDFAgain flatnessoptical amplifieramplifier characteristics - Question #410SDH Transmission Principles
Which logical function block generates the R-LOS alarm?
R-LOS alarmSPI function blockSDH alarmslogical function blocks - Question #411SDH Transmission Principles
The segment overhead of STM-4 is 9*9*4 bytes/frame.
STM-4section overheadframe structurebyte calculation - Question #412Huawei Transmission Equipment Introduction
Which of the following descriptions about the PANEL panel on Optixtrans D908 is wrong?
PANEL boardOptiXtrans D908ETH management portauto commissioning - Question #413WDM/OTN Principles
Which subtype of tributary SNCP protection requires no electrical relay station in the subnet along which the ODUk signal passes?
tributary SNCPSNC/NSNC/SODUk protection - Question #414WDM/OTN Principles
Which of the following descriptions of OTM-nm and OTM-nr.m optical layer interfaces of OTN is wrong?
OTM-nmOTM-nr.mOTN optical interfaceoSC - Question #415WDM/OTN Principles
Among the following modulation technologies, which one performs best in terms of wavelength stability?
MZ modulationEA modulationdirect modulationwavelength stability - Question #416WDM/OTN Principles
Which is the basic requirement of DWDM system for light source?
DWDM light sourcewavelength stabilitylaser requirementsWDM system - Question #417Optical Fiber Communication Fundamentals
The refractive index of the core n1 ( ) cladding refractive index n2, which is a necessary condition for the transmission of optical signals in optical fibers.
refractive indextotal internal reflectioncore claddingoptical fiber propagation - Question #418Huawei Transmission Equipment Introduction
Which of the following communication protocols does Huawei equipment not support for DCN networking?
DCN networkingHWECC protocolOSI protocolHuawei equipment protocols - Question #419SDH Transmission Principles
How many frames is the minimum interval between two adjacent pointer adjustment events?
pointer adjustmentminimum intervalSDH framingjustification - Question #420SDH Transmission Principles
Which of the following is the switching point of linear multiplex segment protection?
linear MS protectionswitching pointcross-connectmultiplex section - Question #421WDM/OTN Principles
Which new unit is added to Liquid OTN?
Liquid OTNOSUOTN hierarchynetwork slicing - Question #422WDM/OTN Principles
Which unit is newly added in Liquid OTN?
Liquid OTNOSUOTN unitsOPU - Question #423WDM/OTN Principles
FOADM includes parallel FOADM and serial FOADM, both of which support any wavelength up to 40 wavelengths or 80 wavelengths.
FOADMOADMwavelength countWDM - Question #424SDH Transmission Principles
Self-healing means that when a network failure occurs, the network automatically recovers from the failure in a very short time (ITU-T stipulates that it is within ()) without huma...
self-healing ringprotection switching50ms recoveryITU-T standard - Question #425WDM/OTN Principles
In the Colored & Directed scenario of 4D ROADM, how many sets of M40V+D40 are needed to dispatch local services to four directions?
ROADM4D ROADMM40VD40 - Question #426SDH Transmission Principles
Which of the following descriptions about overhead bytes is wrong?
overhead bytesA1 A2 framingSDH frame structuresection overhead - Question #427SDH Transmission Principles
Which of the following is not an advantage of SDH?
SDH advantagesOAM overheadSDH vs PDHnetwork standards - Question #428SDH Transmission Principles
How many management unit pointers are there in the STM-64 frame structure?
STM-64AU pointerframe structuremanagement unit - Question #429Huawei Transmission Equipment Introduction
Which of the following descriptions about the MD02 board is wrong?
MD02 boardOTU4OTUC2WDM wavelength range - Question #430Huawei Transmission Equipment Introduction
If the overhead bytes pass through the backplane bus between two slots, the two slots are called paired slots. Paired slots enable automatic transparent transmission of overhead by...
paired slotsbackplane busK bytesD bytes - Question #431Huawei Transmission Equipment Introduction
Which of the following alarm/event dump modes does U2000 support? (Multiple choice)
U2000alarm dump modesNMSalarm management - Question #432SDH Transmission Principles
SDH signals must be scrambled before transmission over optical fiber. Which of the following bytes is not scrambled? (Multiple choice)
SDH scramblingA1 A2 bytesJ0 byteframe alignment - Question #433Optical Fiber Communication Fundamentals
Erbium-doped fiber amplifier (EDFA) is a key component of the new generation of optical communication systems. Which of the following is the function of EDFA? (Multiple choice)
EDFAoptical amplifierC-bandnoise figure - Question #434Huawei Transmission Equipment Introduction
Which of the following statements about the EFS4 circuit board are correct? (Multiple choice)
EFS4 boardFE portsLayer 2 switchingEthernet board - Question #435Huawei Transmission Equipment Introduction
Which of the following are device-level protection solutions for SDH products? (Multiple choice)
device-level protectionTPS protectionboard redundancySDH equipment - Question #436SDH Transmission Principles
In the case of 1+1 linear MSP, which of the following switching modes does not require the APS protection protocol to be enabled? (Multiple choice)
MSP protectionAPS protocol1+1 linear MSPswitching mode - Question #437Huawei Transmission Equipment Introduction
Which of the following are the basic functions of U2000? (Multiple choice)
U2000NMS functionsnetwork managementtopology management - Question #438Huawei Transmission Equipment Introduction
After configuring PDH services on a per-network element basis, a complete trace cannot be searched. Which of the following is a possible reason? (Multiple choice)
PDH service configurationservice traceintermediate siteservice commissioning - Question #439SDH Transmission Principles
Which of the following logic function modules involve processing clock signals? (Multiple choice)
SDH logic modulesSETSSPIclock signal processing - Question #440SDH Transmission Principles
Which of the following is a step to multiplex low-speed services into high-speed SDH services? (Multiple choice)
SDH multiplexingmappingalignmenttributary unit - Question #441Huawei Transmission Equipment Introduction
For a (local) HA solution where the active and standby servers are deployed at the same location, which of the following platforms can be deployed? (Multiple choice)
local HAactive-standby deploymentserver platformhigh availability - Question #442WDM/OTN Principles
Which of the following can be used as the central wavelength of the pump source in EDFA? (Multiple choice)
EDFApump wavelength980nm1480nm - Question #443WDM/OTN Principles
Which of the following different types of ESC are classified according to implementation principles? (Multiple choice)
ESCDCCOTN supervision channelimplementation principles - Question #444Huawei Transmission Equipment Introduction
In the system control unit, which of the following databases will not lose data after a power failure? (Multiple choice)
system control unitdatabase persistencepower failureFDB - Question #445SDH Transmission Principles
Which of the following statements about basic LCAS functions are correct? (Multiple choice)
LCASvirtual concatenationbandwidth adjustmentfault tolerance - Question #446WDM/OTN Principles
Which of the following are components of a WDM system that multiplexes N wavelengths? (Multiple choice)
WDM system architectureoptical amplifiermultiplexing unitmonitoring unit - Question #447Optical Fiber Communication Fundamentals
Which of the following options are low-loss areas of single-mode optical fiber? (Multiple choice)
single-mode fiberlow-loss window1310nm1550nm - Question #448SDH Transmission Principles
Which of the following steps are generally required to multiplex low-speed services into high- speed SDH services? (Multiple choice)
SDH multiplexingmappingpositioningtributary unit - Question #449WDM/OTN Principles
What are the main advantages of WDM? (Multiple choice)
WDM advantagestransparent transmissionnetwork capacityall-optical network - Question #450WDM/OTN Principles
Compared with traditional SDH and SONET equipment, which of the following advantages does OTN have? (Multiple choice)
OTN advantagesFECTCMhigh-speed interfaces