[Apr-2026] Latest Huawei H31-311_V2.5 Certification Practice Test Questions
Verified H31-311_V2.5 Dumps Q&As - 1 Year Free & Quickly Updates
NEW QUESTION # 325
For alignment; Indicates the starting position of VC-n in the corresponding AU or TU frame. * This way: The receiver can correctly remove the corresponding VC from STM-N, and then The VC and C packages are separated into separate low-rate signals, such as PDH, which means that the low-rate path signal can be dropped directly from the STM-N signal.
- A. True
- B. False
Answer: A
NEW QUESTION # 326
The MAC address of a computer network card is uniformly assigned to each manufacturer by the IETF and is unique in the world.
- A. False
- B. True
Answer: A
NEW QUESTION # 327
Which of the following descriptions of self-healing networks are correct? (Multiple choice)
- A. Building a self-healing network requires backup routing
- B. Self-healing networks can automatically restore services without human intervention
- C. The equipment of the self-healing grid must have strong cross-connection capabilities
- D. The time it takes for a self-healing network to restore services is very short, and users can hardly feel it.
Answer: A,B,C,D
NEW QUESTION # 328
Which of the following statements about the MSP ring is correct? (Multiple choice).
- A. Create a protection sub and select only the SDH network element. Do not select REG or WDM network elements.
- B. is assigned by VC4 means that different VCs4 are assigned to different protection subnets to implement MsPs only in certain channels
- C. The number of nodes on the MSP ring cannot exceed 16. .
- D. When multiple protection subnets occupy the same port on the same board, "resource sharing" must be reached.
Answer: A,B,C,D
NEW QUESTION # 329
Among the following modulation technologies, which one performs best in terms of wavelength stability?
- A. EA modulation
- B. Direct modulation
- C. MZ modulation
- D. Indirect modulation
Answer: C
NEW QUESTION # 330
The number of signals multiplexed from ODU2e and ODU2 to ODU3 is 4.
- A. True
- B. False
Answer: A
NEW QUESTION # 331
On a Layer 2 switching device, if an Ethernet port is an Access port, the port can only receive Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.
- A. False
- B. True
Answer: A
NEW QUESTION # 332
Which of the following VLAN numbers can be provided by QINQ technology?
- A. 1024*1024
- B. 4096*1024
- C. 4095*4095
- D. 0
Answer: C
NEW QUESTION # 333
Nonlinear effects are closely related to optical power. To prevent nonlinear effects, the total optical power on the optical fiber should be less than 29dBm.
- A. True
- B. False
Answer: A
NEW QUESTION # 334
Which subtype of tributary SNCP protection requires no electrical relay station in the subnet along which the ODUk signal passes?
- A. SNC/I
- B. SNC/S
- C. SNC/N
Answer: C
NEW QUESTION # 335
TM is a terminal multiplexer, and its functions are: the line end inputs/outputs one STM-N signal, and the branch port can output/input multiple low-speed branch signals.
- A. True
- B. False
Answer: A
NEW QUESTION # 336
Only one TCM can be used at a site.
- A. False
- B. True
Answer: A
NEW QUESTION # 337
What is the structure of STM-16?
- A. 9*270*16
- B. 9*270*64
- C. 9*270*4
- D. 9*270*1
Answer: A
NEW QUESTION # 338
Which of the following options are low-loss areas of single-mode optical fiber? (Multiple choice)
- A. 1400nm
- B. 1550nm
- C. 900nm
- D. 1310nm
Answer: B,D
NEW QUESTION # 339
Which of the following descriptions of LCAS is wrong?
- A. Use SDH overhead bytes (high-order virtual concatenation uses K4, low-order virtual concatenation uses H4) to carry control information and perform handshake operations between the source and the sink
- B. TR_TIMR is the waiting time for recovery, which refers to the time it takes for the time slot shielded by LCAS to be added to the LCAS virtual cascade group after it changes from bad to good.
- C. When some members fail, other members still transmit data normally; when the failed members are repaired, the bandwidth of the virtual cascade group can be automatically restored.
- D. If the belt curtain of a VCTrunk is not suitable and needs to be increased or decreased, the belt curtain can be adjusted through LCAS, which only requires increasing or decreasing the number of VCTrunk members to achieve smooth belt curtain upgrade without interrupting business
Answer: A
NEW QUESTION # 340
The number of ODU2e signals multiplexed into the ODU3 signal is the same as the number of ODU2 signals multiplexed into the ODU3 signal.
- A. False
- B. True
Answer: A
NEW QUESTION # 341
When configuring VLAN-based service types, which of the following features must be enabled on the port?
- A. Go to check
- B. Flow control
- C. Broadcast packet suppression
- D. Autonegotiation mode
Answer: A
NEW QUESTION # 342
Which of the following is the multiplexing method of SDH?
- A. Flexible mapping
- B. Flexible mapping and synchronous multiplexing
- C. Flexible mapping and asynchronous multiplexing
- D. Asynchronous multiplexing
Answer: B
NEW QUESTION # 343
PDM uses a polarization beam splitter to divide the laser into two vertical directions: x and y.
- A. True
- B. False
Answer: A
NEW QUESTION # 344
Compared with traditional SDH and SONET equipment, OTN has up to 6 levels of TCM monitoring capabilities.
- A. True
- B. False
Answer: A
NEW QUESTION # 345
In the OSN550, the CXL slot contains a function board that integrates a system control and communication (SCC) unit, a cross-connecting unit, and a clock unit Depending on the functionality and access features provided by the OSN550, there are several types of dashboards
- A. True
- B. False
Answer: A
NEW QUESTION # 346
When the sender detects that b6-b8 of the K2 byte is 110, it means that the sender reports a () alarm.
- A. R-LOF
- B. MS-AIS
- C. R-LOS
- D. MS-RDI
Answer: D
NEW QUESTION # 347
MSTP adds () and () interfaces and corresponding signal processing capabilities on top of the original SDH.
Answer:
Explanation:
A. TM|Ethernet
NEW QUESTION # 348
......
Latest 2026 Realistic Verified H31-311_V2.5 Dumps - 100% Free H31-311_V2.5 Exam Dumps: https://www.pass4leader.com/Huawei/H31-311_V2.5-exam.html
Get 2026 Updated Free Huawei H31-311_V2.5 Exam Questions and Answer: https://drive.google.com/open?id=1SDZOpYxtONm7JtAKucxfmHHy-zvu4kp0