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Free Huawei H31-311 Practice Questions & Answers 2026 Part2 | HCIA-Transmission

Are you preparing for the Huawei H31-311 certification exam? SPOTO offers the Huawei H31-311 Premium File; all questions are aligned with the latest exam content and come with expert-provided answers. Our question banks cover the latest question types, core concepts, and detailed explanations, helping you familiarize yourself with the exam format and difficulty level. Whether you are reviewing core concepts or simulating a real exam environment, these resources will rapidly boost your confidence and readiness.
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Question #1
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
View answer
Correct Answer: D
Question #2
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #3
NE A and NE B are adjacent NEs. If B3 and lower-order bit errors occur in the A->B direction and B1, B2, B3, and lower-order bit errors occur in the B->A direction, which of the following performance events are reported by NE A? (Multiple Choice)
A. RSBBE
B. RSFEBBE
C. MSBBE
D. MSFEBBE
E. HPBBE
F. HPFEBBE
View answer
Correct Answer: ACEF
Question #4
Which of the following is not an EVPLAN feature?
A. Abandwidth sharing
B. BForwarding based on MAC address
C. Cpoint-to-point, and point-to-multipoint topologies
D. DMultipoint to multipoint topology
View answer
Correct Answer: C
Question #5
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
View answer
Correct Answer: C
Question #6
D1 to D12 are digital communication channel bytes. D1 to D6 are used in the regenerator section, and D7 to D12 are used in the multiplex section.
A. ATRUE
B. BFALSE
View answer
Correct Answer: A
Question #7
When multiple users need to share the same VCTRUNK and use the same VLAN ID, the QinQ technology can be used.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #8
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #9
The dual fiber ring topology consisting of three network elements is arranged in counterclockwise order as the service between A, B and C A and C occupies the first VC-48 on the short path VC-12 time slots, B and C of the same service also occupy the 48th of the first VC-4 on the short path VC-12 time slots
A. Unidirectional path protection ring
B. SNCP ring
C. Bidirectional MSP ring
D. All of the above
View answer
Correct Answer: C
Question #10
Which of the following units is newly added to Liquid OTN?
A. TU
B. DU
C. SU
D. PU
View answer
Correct Answer: C
Question #11
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #12
Which of the following statements about the MST functional module is correct? (Multiple choice).
A. MST is both the source and sink of MS
B. MST implements BIP-8 statistical computation of B2 bytes
C. MST returns bit error messages, but does not return a specific number of bit errors
D. MST provides an E20 orderwire channel
View answer
Correct Answer: AD
Question #13
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
View answer
Correct Answer: D
Question #14
Self-healing refers to the capability of a network to automatically recover its services within a short period from a fault without any manual intervention. Users are unaware of the network fault. A network with this self-healing capability is a self-healing network.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #15
Which of the following statements regarding the protection of the cross-connecting plate 1+1 iscorrect? (Multiple choice).
A. he source business board sends services to the main and standby crossover boards
B. fter the service cross-connection is completed, the active and standby cross-board sends the data of the primary cross-board to the receiving service board
C. he receiving service board can only receive data from the active cross-link board
D. he bus of the two cross-connected modules works independently and does not interfere with each other
E. ual bus system structure indicates that the service board performs dual data transfer to the cross- connection side and selectively receives data on the cross-connection side
F. oth cross-connecting plates have the same configuration
View answer
Correct Answer: ADEF
Question #16
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #17
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #18
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
View answer
Correct Answer: A
Question #19
Both TSDN and ASON can detect network-wide resources and implement centralized control of resources, services, and pipes on the entire network.
A. RUE
B. ALSE
View answer
Correct Answer: B
Question #20
The standard Ethernet frame length should not be less than 64 bytes.Which of the following factors cause this limitation? (Multiple Choice)
A. Minimum transmission distance
B. Maximum transmission distance
C. Working mechanism of conflict detection
D. MAC address
View answer
Correct Answer: BC
Question #21
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #22
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #23
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #24
When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.
A. -LOS
B. -LOF
C. S-RDI
D. S-AIS
View answer
Correct Answer: C
Question #25
Which of the following bridges are used to forward data based on the MAC address and VLAN ID carried in the data?
A. 8021a
B. 802
C. 802
D. 802
View answer
Correct Answer: C
Question #26
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #27
Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)
A. OPUk
B. ODUk
C. OCh
D. OTUk
View answer
Correct Answer: ABD
Question #28
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #29
In MSP networking, when the optical fiber is connected between sites, the east light plate of the site is connected to the west light plate of the downstream site, and these stations are connected in turn to form a ring. In this case, the direction from the toko plate of the site to the wine light plate of the downstream station is the direction of the main ring, and the direction of forming the ring is the direction of service.
A. True
B. False
View answer
Correct Answer: B
Question #30
The frame structure of 0DU4 is four times that of ODU1.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #31
Which of the following statements about the MST functional module are correct? (Multiple Choice)
A. The MST is both the source and sink of the MS
B. The MST implements the BIP-8 statistics calculation of the B2 byte
C. The MST returns bit error information, but not the specific number of bit errors
D. The MST provides the E2 orderwire channel
View answer
Correct Answer: AD
Question #32
Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.
A. 50
B. 100
C. 200
D. 20
View answer
Correct Answer: B
Question #33
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #34
When the J1 byte mismatch occurs, the () alarm is reported and services may be interrupted.
A. P_SLM
B. S_TEM
C. P_TEM
D. P_TIM
View answer
Correct Answer: D
Question #35
Which of the following bridges is used to forward data based on the MAC address and VLAN ID carried in data?
A. 802
B. 802
C. 802
D. 802
View answer
Correct Answer: C
Question #36
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
View answer
Correct Answer: A
Question #37
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #38
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #39
The frame structure of 0DU4 is four times that of ODU1.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #40
K1 and K2 bytes can send APS switching signaling or indicate that the multiplexed segment signal is invalid.
A. True
B. Error
View answer
Correct Answer: A
Question #41
NGWDK adopts LO-L1+L2 triple-extension architecture, in which the L2 layer implements switching based on Ethernet/MPLS-TP, the L. layer implements switching based on ODUk/C, and the L. layer implements switching based on I/O.
A. rue
B. alse
View answer
Correct Answer: A
Question #42
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #43
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #44
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #45
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #46
If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed
A. True
B. False
View answer
Correct Answer: A
Question #47
The frame structure of 0DU4 is four times that of ODU1.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #48
The frame structure of 0DU4 is four times that of ODU1.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #49
On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time.
A. ALSE
B. RUE
View answer
Correct Answer: A
Question #50
Compared with dense wavelength division multiplexing (DWDM) systems, crude glass division multiplexing (CWDM) systems provide a certain amount of glass length and transmission distance within (kmkm), which greatly reduces system cost and has strong flexibility
A. 50
B. 100
C. 200
D. 20
View answer
Correct Answer: B
Question #51
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and usage information of clock sources?
A. 1
B. 1
C. 1
D. 1
View answer
Correct Answer: B
Question #52
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #53
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #54
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #55
The frame structure of ODU4 is four times that of ODU1
A. True
B. False
View answer
Correct Answer: B
Question #56
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #57
If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed
A. True
B. Error
View answer
Correct Answer: A
Question #58
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #59
Which of the following statements about the MD02 board is incorrect?
A. AOTU4 or OTUC2 services can be received or transmitted on the WDM side
B. B100GE or OTU4 services can be received on the client side
C. CThe board supports regeneration mode
D. DThe board tunes WDM-side optical signals within the range of 120 wavelengths in Super C band at a 50 GHz spacing and supports flexible grid
View answer
Correct Answer: C
Question #60
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #61
The device IP addresses of the gateway NE and non-gateway NEs must be set in the same network segment.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #62
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #63
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #64
In the 2.5G MSP ring consisting of four MSTP sites, when a protection switching occurs, which of the following statements about the alarm reporting is correct?
A. The PS alarm is reported on the tributary board
B. The APS-INDI alarm is reported on the XCS board
C. The APS-INDI alarm is reported on the system control board
D. The APS-INDI alarm is reported on the line board
View answer
Correct Answer: B
Question #65
The management scope of an OMSn is the path from the input optical port on a multiplexer unit at the transmit site to the output optical port on a demultiplexer unit at the receive site, which is called an optical multiplexing section (OMS) path.
A. ALSE
B. RUE
View answer
Correct Answer: B
Question #66
When setting the LCAS mode, follow the following principles:1. If devices at the two ends are both Huawei devices, set them to the "Standard Mode".2. If a Huawei device is interconnected with a third-party device, set the interconnected devices to the same mode according to the mode supported by the third-party device.
A. ALSE
B. RUE
View answer
Correct Answer: A
Question #67
Linear MSP (LMSP) has two modes: 1+1 and 1:1. Additional services can only be configured for theprotection channel in 1:1 mode of the LMSP.
A. rue
B. alse
View answer
Correct Answer: A
Question #68
The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #69
Which of the following is the functional unit that provides a high-speed signal interface and processes the corresponding signal?
A. Cross-connecting unit
B. Auxiliary units
C. Tributary units
D. Line units
View answer
Correct Answer: D
Question #70
Which of the following is the frame whose VC-4 J1 byte is indicated by the current frame's AUpointer?
A. Current frame
B. Next frame
C. Previous frame
D. None of the above
View answer
Correct Answer: B
Question #71
When the bridge uses ivl learning mode, an entry in the MAC address table is created based on the source MAC address and source port of the teach frame. This entry applies to all VLANs
A. True
B. False
View answer
Correct Answer: B
Question #72
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
View answer
Correct Answer: D
Question #73
QinQ technology can be used when multiple users need to share the same VCTRUK and use the same VLAN ID.
A. True
B. Error
View answer
Correct Answer: A
Question #74
If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed
A. True
B. Error
View answer
Correct Answer: A
Question #75
Which of the following statements regarding multiplexing partial remote error indication (MS-REI) is correct?(1) B2 bytes indicate the transmission channel.(2) The M1 byte represents the transmission channel(3) THE MS-REl is sent from the receiver to the source. (4) MS-REI is transmitted from the source to the receiver. (5) Indicates the number of bit errors detected by the receiver after receiving the MS signal.
A. (1) (4) (5)
B. (2) (4) (5)
C. (1) (3) (5)
D. (2) (3) (5)
View answer
Correct Answer: D
Question #76
Manual configuration will clear data on the NE side.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #77
The standard Ethernet frame length should not be less than 64 bytes. Which of the following factors cause this limitation? (Multiple Choice)
A. Minimum transmission distance
B. Maximum transmission distance
C. Working mechanism of conflict detection
D. MAC address
View answer
Correct Answer: BC
Question #78
Which of the following statements regarding the sequence of signal flows between the SDH interface and the cross-connecting unit is correct?
A. SPI <> RST <> MST <> MSP<> MSA <> HPT
B. SPI <> RST <> MSA<> MSP<> MST <> HPT
C. SPI <> MST<> RST <> MSA <> MSP >HPT
D. SPT<> MS <> MSA<> RST > MSP<> HPT
View answer
Correct Answer: A
Question #79
Which of the following ITLI-T recommendations define the OTN frame structure?
A. G
B. G
C. G
D. G
View answer
Correct Answer: D

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