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Exam Code:	H31-311_V2.5
Exam Name:	HCIA-Transmission V2.5
Certification Provider:	Huawei
Free Question Number:	336
Version:	v2025-01-18
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Exam Question List: Question 1: The backplane has two -48V power lines, and each board obta...; Question 2: Which of the following communication protocols does Huawei e...; Question 3: Which of the following is the step for China to multiplex 2...; Question 4: Which of the following statements about the frame structure ...; Question 5: TNG 1N401 board supports mixed transmission of multiple ODUk...; Question 6: Which of the following descriptions about the MD02 board is...; Question 7: When configuring the OSN3500 with SXCS boards, which of the...; Question 8: Among the following modulation technologies, which one perf...; Question 9: Which of the following is a functional unit that provides h...; Question 10: The dispersion coefficient is the time delay difference cau...; Question 11: Multicast forwarding can be understood as selective broadca...; Question 12: Regarding the AU-AIS alarm, which of the following statemen...; Question 13: When the U2000 is synchronized, the NE data that is the sam...; Question 14: Which of the following device domains can be managed by U200...; Question 15: OL board, OLA board and OPC board can all amplify optical si...; Question 16: Which of the following options are considered to be deficie...; Question 17: Users can easily access NCE through a browser without havin...; Question 18: Which of the following statements about 1+1 protection of c...; Question 19: PDM uses a polarization beam splitter to split the laser int...; Question 20: In the OLT+ONU combined networking mode, OLT mainly plays t...; Question 21: Are the following statements about the definition of SDH co...; Question 22: Which of the following options are low-loss areas of single-...; Question 23: PWE3 is a Layer 2 service bearer technology that can simulat...; Question 24: In Huawei's T-SDN network architecture, () realizes central...; Question 25: Which of the following descriptions are correct? (Multiple c...; Question 26: Which of the following descriptions of MPLS are wrong? (Mult...; Question 27: For a (local) HA solution where the active and standby serve...; Question 28: From the formula: OTUk rate = 255/(39-k) × STM-N rate, we c...; Question 29: Sending test frames will affect normal business....; Question 30: When the low-level resources of the device are insufficient,...; Question 31: What are the advantages of ESC? (Multiple choice)...; Question 32: Which of the following modulation technologies is currently...; Question 33: Which of the following technologies is the main difference b...; Question 34: Fiber amplifiers can be divided into rare earth ion doped f...; Question 35: Which of the following descriptions about solving the system...; Question 36: Which of the following statements about OTM-nm and OTM-nr.m...; Question 37: Two beams of light that meet the coherence condition are ca...; Question 38: The frame structure of OTUk at each level is the same....; Question 39: Physical port: also known as MAC port, which is the externa...; Question 40: Which of the following is a VLAN classification method? (Mul...; Question 41: For ODUk SNCP protection, if the pass-through site is an el...; Question 42: Which of the following options are low-loss areas of single-...; Question 43: MS-AIS and MS-RDI belong to a group of warning information, ...; Question 44: Compared with PDH, the main advantages of SDH are reflected...; Question 45: Which of the following alarms will not trigger an AU-AIS ala...; Question 46: Which of the following elements does a data communication n...; Question 47: Which of the following is a functional unit that provides se...; Question 48: Which of the following descriptions about the PANEL panel o...; Question 49: Which unit is newly added in Liquid OTN?...; Question 50: What does the optical layer overhead include? (Multiple choi...; Question 51: Which of the following bytes in the regenerator section over...; Question 52: Which of the following factors determine that the optical s...; Question 53: The receiving end performs BIP-8 check on the received STM-...; Question 54: Which of the following logic function blocks is used to proc...; Question 55: Which of the following is not an advantage of WDM?...; Question 56: Which of the following are not passive optical devices? (Mul...; Question 57: Which of the following is the main advantage of SDH? (Multip...; Question 58: When using scripts to back up and restore the network confi...; Question 59: When 2M PDH signal is mapped into VC12, the mapping method ...; Question 60: Which of the following options are included in the alarm lev...; Question 61: Which of the following is correct about the difference betwe...; Question 62: U2000 client can be installed on Windows, Solaris and SUSE L...; Question 63: The difference between ASON network and ordinary network is ...; Question 64: RSOH, MSOH, HPOH and LPOH implement monitoring functions in...; Question 65: SDH signals must be scrambled before transmission over optic...; Question 66: From the following barcode 02846710HC000085 Y1 LPS-FRM800-P...; Question 67: Which of the following is the multiplexing method of SDH?...; Question 68: The speed of SF64 and SL64 boards are both STM-64. Therefore...; Question 69: OTM nr.m consists of a maximum of "n" optical multiplexed ch...; Question 70: 1000BaseSX uses single-mode optical fiber and light with a w...; Question 71: Which of the following correctly describes the order in whic...; Question 72: The single-fiber bidirectional wavelength division multiple...; Question 73: The information payload area stores only the information pa...; Question 74: MSTP (Multi-Service Transport Platform) is a multi-service ...; Question 75: Which of the following are the logical function modules inv...; Question 76: Which of the following reasons will not cause the network m...; Question 77: Which of the following are device-level protection solutions...; Question 78: Which of the following alarms will not generate correspondi...; Question 79: Which of the following options are the main characteristics...; Question 80: Which of the following are components of a WDM system that m...; Question 81: Nonlinear effects are closely related to optical power. To ...; Question 82: Which of the following statements about U2000 licenses is wr...; Question 83: The 1310nm and 1550nm transmission windows are low-loss win...; Question 84: 1:N linear multiplex section protection: when the working c...; Question 85: After configuring PDH services on a per-network element basi...; Question 86: In the SDH optical synchronous transmission system, which o...; Question 87: Which of the following networking types is optical line pro...; Question 88: Frame-Mapped GFP (GFP-F) is a processing mode for data encod...; Question 89: For Huawei equipment, NODE ID is the unique identifier of t...; Question 90: There are three types of multi-level connection monitoring ...; Question 91: Which of the following is the common point between the two-...; Question 92: Regarding the comparison between Raman amplifier and EDFA, ...; Question 93: Which of the following descriptions of OTM-nm and OTM-nr.m o...; Question 94: U2000 network management supports multiple external interfac...; Question 95: OTN has its own unique frame structure and rich overheads to...; Question 96: OLT is connected to the switch through () and uses the V5.2 ...; Question 97: The clock unit can only access the external clock source as...; Question 98: The subnet mask of 255.255.255.248, according to the calcul...; Question 99: In the Colored & Directed scenario of 4D ROADM, how man...; Question 100: In WDM systems, the reduction in optical signal-to-noise ra...; Question 101: Pointer adjustment is related to which of the following?...; Question 102: The last 256 columns in the OTN frame structure are the FEC ...; Question 103: Ethernet service OAM focuses on the maintenance of end-to-e...; Question 104: In actual wavelength division systems, systems with rates o...; Question 105: Which of the following methods are included in WDM networkin...; Question 106: MPLS label allocation is divided into static allocation and ...; Question 107: What kind of cascading method does the EoS board of OptiX OS...; Question 108: EPL services use ports and bandwidth exclusively, and differ...; Question 109: If a network port that supports auto-negotiation is connect...; Question 110: PWE3 is a processing mechanism that simulates the key attri...; Question 111: STM-N signals must be scrambled when transmitted on the line...; Question 112: Which of the following is not a northbound interface provide...; Question 113: Which new unit is added to Liquid OTN?...; Question 114: What is the first condition that a network needs to have in...; Question 115: Which of the following is not an advantage of Raman amplifie...; Question 116: OTN technology is developed based on SDH and WDM technology,...; Question 117: The rate represented by STM-1 is ()....; Question 118: The EDFA inside the THBIDAP board has the () function. When ...; Question 119: Which of the following statements is wrong?...; Question 120: Communication networks can be divided into local area netwo...; Question 121: Which of the following options does not belong to the applic...; Question 122: Which of the following is the switching point of linear mult...; Question 123: Compared with traditional SDH and SONET equipment, OTN has ...; Question 124: What client-side service signals does the TNG1T401 board sup...; Question 125: The primary and backup ports of the linear multiplexing seg...; Question 126: () is a parameter used to describe the reliability of the tr...; Question 127: Compared with traditional SDH and SONET equipment, which of...; Question 128: LCK insertion takes precedence over AIS insertion. That is,...; Question 129: Which of the following options belong to the functions in th...; Question 130: If a weak signal light and a strong pump light are transmit...; Question 131: U2000 can flexibly interconnect with different third-party n...; Question 132: EPL service uses the bandwidth on the line exclusively, whi...; Question 133: How many frames is the minimum interval between two adjacent...; Question 134: What is the frame structure of STM-16?...; Question 135: Compared with the dense wavelength division multiplexing sy...; Question 136: A bidirectional ring means that the routes for sending and ...; Question 137: NCE's software deployment method adopts B/S (Browser/Server)...; Question 138: The LOI low-level interface includes multiple logical functi...; Question 139: STM-64 has () AU pointer.; Question 140: The frame structure of TU3 is a bit incomplete, and the gap ...; Question 141: Which of the following values has the highest clock quality...; Question 142: In a wavelength division multiplexing system, when the numb...; Question 143: FAS is the frame alignment overhead with a length of 6 bytes...; Question 144: Consider an optical fiber as a "multi-lane" public road. Th...; Question 145: () is called optical transmission segment in Chinese, and (...; Question 146: A subnet can contain other subnets....; Question 147: If the virtual cascade group at one end of the equipment ha...; Question 148: VLAN domain can isolate unicast messages of different users...; Question 149: The most effective subnet mask in a point-to-point WAN link ...; Question 150: Two beams of light that meet the coherence condition are ca...; Question 151: Which of the following alarms will definitely trigger optica...; Question 152: The essence of OPSK modulation is to reduce the baud rate o...; Question 153: Which of the following descriptions of ODUK_PM_BDI is correc...; Question 154: The current sparse wavelength division multiplexing system ...; Question 155: Which of the following descriptions about the slot settings ...; Question 156: Compared with traditional WDM, which of the following optio...; Question 157: What principle of light is used when light propagates in opt...; Question 158: SES: There are 5% or more error blocks or at least one defe...; Question 159: Which of the following statements are correct regarding the ...; Question 160: Ethernet_II and IEEE802.3 frame types are distinguished by ...; Question 161: Which of the following descriptions about signal marker byt...; Question 162: Which of the following is protected by the channel protectio...; Question 163: In the Windows operating system, the U2000 program's own lo...; Question 164: For OSN3500, which of the following boards provides central...; Question 165: FOADM includes parallel FOADM and serial FOADM, both of whic...; Question 166: Which of the following is not an advantage of using QinQ tec...; Question 167: Which subtype of tributary SNCP protection requires no elec...; Question 168: Arrayed Guided Grating (AWG) multiplexer/demultiplexer has t...; Question 169: Manual configuration will clear the data on the NE side....; Question 170: Which of the following planes does the ASON network have mor...; Question 171: The 48 wave OTM site needs to be equipped with an OAU ampli...; Question 172: The value range of U-PTR is 0~782. When the receiving end re...; Question 173: Which of the following site types support business up and d...; Question 174: The management scope of O MSn is the path from the input op...; Question 175: In a wavelength division system, after a certain distance o...; Question 176: When BIP-8 in the OTUk segment monitoring overhead SM detect...; Question 177: The segment overhead of STM-16 is 9*8*16 bytes/frame....; Question 178: The segment overhead of STM-4 is 9+9+4 lines/frame....; Question 179: HUB is a multi-port repeater. When HUB is the central device...; Question 180: Which of the following service nodes can be connected via a...; Question 181: In the network management system, the network element perfo...; Question 182: MPLS is a label forwarding technology. Which of the followin...; Question 183: E1 has three modes: framing, multi-framing and unframing. Th...; Question 184: Which of the following is the adjustment unit of AU-PTR?...; Question 185: The optical amplifier unit can compensate for line loss and...; Question 186: By default, a B2-EXC alarm is reported when the number of B...; Question 187: Both PDH and SDH have globally unified standards....; Question 188: In the electric power dispatching system, dispatching data ...; Question 189: What functions does the SDH overhead byte perform? (Multiple...; Question 190: The nominal rate of the OTU4 signal is 111809973.568 kbits,...; Question 191: Which of the following statements about the MSP ring are cor...; Question 192: In the OTN mapping path, the ODUk signal can only be obtain...; Question 193: In case of SNCP, the line board selectively receives the se...; Question 194: How many 2M business work boards does OSN 7500 support at mo...; Question 195: Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional se...; Question 196: The two PIU/APIU boards of the OptiXtrans E6616 or E6608 (0...; Question 197: AAC address consists of 46 bits and is globally unique. Whic...; Question 198: Which of the following databases is used by U2000 on PC/WIN2...; Question 199: Which of the following are the basic functions of U2000? (Mu...; Question 200: Which of the following bytes can be used for wired calls bet...; Question 201: The technology of using a local oscillator laser of the sam...; Question 202: In the integrated DWDM system, the transmitting light sourc...; Question 203: Which of the following options does the 802.1Q tag header c...; Question 204: In terms of protection capability, which of the following t...; Question 205: Which type of board does TQM belong to?...; Question 206: User management can ensure the security of user information...; Question 207: The OTN electrical layer SM, PM, and TCMi overheads all con...; Question 208: U2000 provides physical view, Layer 2 view, RPR view, IP vie...; Question 209: On the two-fiber bidirectional multiplex section protection...; Question 210: When LCK is inserted into the local ODUk signal, which proc...; Question 211: OTUk_UAS is the unavailable seconds of the optical transmiss...; Question 212: TNG1M404DM board can realize the multiplexing of 4 100Gbit/s...; Question 213: Which of the following are the main features of the overall ...; Question 214: When 61.2M PDH signal is mapped into VC12, the mapping meth...; Question 215: Which of the following is the meaning of "L" in the optical...; Question 216: In a small network, the function of an OptiXtrans DC908 is ...; Question 217: Which of the following descriptions about the FIU board is ...; Question 218: The process from C4 to VC4 during the multiplexing process ...; Question 219: Which of the following descriptions about full-duplex Ethern...; Question 220: When the 80-wavelength OTM site uses M40V for wave combinin...; Question 221: MSTP supports dynamic allocation of bandwidth based on the a...; Question 222: Which of the following descriptions of ODUk_PM_BDI is correc...; Question 223: Which of the following media types has a transmission dista...; Question 224: After mapping and multiplexing, 4 ODU2 signals can be multi...; Question 225: When the sender detects that b6-b8 of the K2 byte is 110, i...; Question 226: SDH is a complete hierarchical structure of standardized dig...; Question 227: TM is a terminal multiplexer, and its functions are: the lin...; Question 228: The number of error blocks in each VC4 channel is detected ...; Question 229: Which of the following options is emitted from an ordinary ...; Question 230: Which of the following is not included in the basic architec...; Question 231: NGWDK adopts LO-L1+L2 triple-extension architecture, in whic...; Question 232: WDM multiplexes optical signals at multiple speeds (waveleng...; Question 233: TU-AIS is often encountered during network maintenance. Whic...; Question 234: Forced switching, fiber switching, manual switching and mot...; Question 235: For OTN interfaces without optical layer overhead, in order...; Question 236: The power SCADA business and communication interface of the...; Question 237: Which of the following does L refer to in the optical modul...; Question 238: When configuring LMSP, there are two switching modes: singl...; Question 239: If one device does not support auto-negotiation, but the ot...; Question 240: In the network interface of OTN, the network interface with...; Question 241: In a 3-7-3 multiplexing line, one VC-12 can transmit () 2.0...; Question 242: Which of the following protections requires the use of the ...; Question 243: The frame rate () and transmission rate of different levels...; Question 244: In OSN550, the CX slot contains a function board integratin...; Question 245: What are the main losses of optical fiber? (Multiple choice...; Question 246: The frame period of OTN signal is fixed and the same as the ...; Question 247: Which of the following alarms will not trigger an AU-AIS ala...; Question 248: Subnet division can reduce network traffic, improve network...; Question 249: The rate of STM-0 is 51.84Mbit/s; (STM-0 is used for digital...; Question 250: SL64 board can be used for OSN2500....; Question 251: The TTI in the segment monitoring overhead SM provides TIM ...; Question 252: By default, if the B2 bit error exceeds which of the follow...; Question 253: R-LOS alarm has nothing to do with overhead bytes but only w...; Question 254: TNV2E224 board does not support which of the following types...; Question 255: H4 is used to indicate the () and () of the payload....; Question 256: When the optical fiber is connected but the business is not...; Question 257: OPC is an optical layer platform board that needs to be used...; Question 258: The 1+1 protection mechanism on the customer side implement...; Question 259: The initial value of the Sequence number in the ETH PWE3 en...; Question 260: TU-AIS is often encountered during network maintenance. The ...; Question 261: In Ethernet, the frame length has a lower limit, which is m...; Question 262: In the system control unit, which of the following database...; Question 263: Number of signal bytes/frame rate of signal = ()...; Question 264: In addition to positioning, the pointer can also accommodat...; Question 265: From the perspective of single board implementation, what ar...; Question 266: Modulation is the process of processing the information of ...; Question 267: Which of the following statements about signal label byte C...; Question 268: The number of ODU2e signals multiplexed into the ODU3 signa...; Question 269: Under which of the following scenario combinations can the ...; Question 270: Which of the following local maintenance terminals can be us...; Question 271: OLA stations can also be monitored using ESC....; Question 272: In the case of 1+1 linear MSP, which of the following switc...; Question 273: Which of the following descriptions about ROADM are correct...; Question 274: The SDH optical interface only scrambles the electrical sign...; Question 275: Additional services cannot be configured on the protection ...; Question 276: The Ethernet board has an external port (Port) and an inter...; Question 277: Mapping is the process of adapting branch signals into () a...; Question 278: Which of the following bridges are used to forward data bas...; Question 279: IEEE802.3 standard is developed for which of the following t...; Question 280: MAC forwarding table: Which of the following items does it c...; Question 281: Which of the following is not a nonlinear effect?...; Question 282: Which of the following optical loss alarms will not cause s...; Question 283: Establish an Ethernet private line service between H (HQ) a...; Question 284: Which of the following maintenance signals is transmitted fr...; Question 285: When the rate of the SNCP ring composed of four OptiX OSN25...; Question 286: Which aspects of the fiber core have a decisive influence on...; Question 287: The refractive index of the core n1 () and the refractive i...; Question 288: Which of the following is the unit that converts non-standa...; Question 289: Which of the following is not one of the main characteristic...; Question 290: G.707 multiplexing line diagram can only multiplex 2M\34M\1...; Question 291: Which of the following layers of overhead belong to the elec...; Question 292: Two PD1 boards and one DMS board jointly implement the TPS ...; Question 293: Which of the following statements about overhead bytes is wr...; Question 294: Which of the following options are correct regarding 1:1 op...; Question 295: Among the maintenance signals at the ODUk level, which of t...; Question 296: What is the structure of STM-16?...; Question 297: Currently, the most commonly used signal is 2Mbit/s. Which ...; Question 298: What is the line code type of the commonly used SDH optical ...; Question 299: Which of the following ITLI-T recommendations define the OT...; Question 300: A local area network is a network formed by interconnecting...; Question 301: When the ACT indicator light of the SDH board is off, it me...; Question 302: Which of the following is the monitoring overhead used to m...; Question 303: SDB is a hierarchical structure of standardized digital sign...; Question 304: In a 25GMSP ring consisting of four MSTP sites, which of th...; Question 305: When the working channel of the optical line protection fai...; Question 306: How many management unit pointers are there in the STM-64 fr...; Question 307: When Severely Errored Seconds (SES) occur in the PM portion ...; Question 308: In Recommendation ITU-TG692, the allowed signal frequencies...; Question 309: Which of the following protocols in the OTN standard system ...; Question 310: Which of the following is the meaning of SFD in the Ethernet...; Question 311: GFP-F is a packet data (PDU) oriented processing mode. It en...; Question 312: For OSN products, changing which of the following parameter...; Question 313: One VC-4 can transmit () VC-12, that is, (63) 2.048 Mbit /s...; Question 314: In the SDH multiplexing structure, the rate represented by V...; Question 315: Which of the following boards supports QinQ function?...; Question 316: The unprotected chain consists of four network elements: NE...; Question 317: What are the main advantages of WDM? (Multiple choice)...; Question 318: QINQ technology solves the problem of insufficient VLAN reso...; Question 319: The STAT indicator on the SDH board flashes red, on for 100m...; Question 320: Which of the following factors will trigger the automatic s...; Question 321: Which of the following does not belong to wavelength divisi...; Question 322: A communication network is a system that interconnects geog...; Question 323: Which of the following networking forms supports additional...; Question 324: Which of the following IP addresses is a Class C IP address?...; Question 325: Which of the following is the difference between AU pointer ...; Question 326: Coherent reception uses a local oscillator laser of the sam...; Question 327: The standard Ethernet frame length should not be less than ...; Question 328: The size of OTUk frame is variable....; Question 329: When there is no frequency difference and phase difference ...; Question 330: Which of the following options are available for ODUk SNCP s...; Question 331: In which ITU-T recommendation is the OTN frame structure def...; Question 332: Optical fiber loss includes bending loss, absorption loss a...; Question 333: Both QinQ and MPLS can provide users with L2 VPN services, ...; Question 334: Refers to the bit used to align and indicate the correspond...; Question 335: The high-speed railway engineering disaster prevention and ...; Question 336: HONET integrated service access network belongs to () access...

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