HCIA-Transmission(Huawei Certified ICT Associate-Transmission) H31-311-ENU Online Free Test

Posted by: Pdfprep Category: Huawei Online Questions Tags: H31-311-ENU Online Questions Post Date: March 9, 2021

Pdfprep2021-03-09T18:11:49+00:00

This adjustable Huawei H31-311-ENU prep questions will help you in procuring you think about your frail point inside the HCNA-TransmissionH31-311-ENU exam arrangement. At the point when you are the solitary who’s apprehensive about obtaining fizzled inside the Huawei H31-311-ENU exam questions, at that point you unquestionably ought not must. Since the Pdfprep H31-311-ENU premium questions offer you the 100% passing guarantee inside the at the first attempt.

Page 1 of 8

1. When a fiber cut test is performed on a normal MSP ring, which of the following alarms is reported? (Multiple Choice)

TU-AIS

R-LOS

APSJNDI

BD STATUS

2. When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.

TRUE

FALSE

3. 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.

100

200

4. The SNCP switching speed can be improved if you classify the SNCP services that have the same source, sink, or route into groups.

TRUE

FALSE

5. The standard Ethernet frame length should not be less than 64 bytes.

Which of the following factors cause this limitation? (Multiple Choice)

Minimum transmission distance

Maximum transmission distance

Working mechanism of conflict detection

MAC address

6. The device IP addresses of the gateway NE and non-gateway NEs must be set in the same network segment.

TRUE

FALSE

7. Which of the following are the service board types of MSTP devices? (Multiple Choice)

Interface board

Service processing board

Service processing board with interfaces

Auxiliary board

8. When the LCAS function is used, which of the following overhead bytes are used to transmit control information? (Multiple Choice)

9. Which of the following are the electrical-layer overheads of OTN? (Multiple Choice)

OPUk

ODUk

OCh

OTUk

10. The working mode of a port determines the flow control mode of the port.

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

Auto-negotiation flow control mode

Non-auto-negotiation flow control mode

Both of the above

None of the above

Page 2 of 8

11. When the SXCS board is configured for an OSN 3500, which of the following is the access capacity of the subrack in full configuration?

35G

58.75G

80G

155G

12. When LMSP is configured, there are two switching modes: single-ended switching and dual-ended switching. The protection protocol does not need to be enabled for single-ended switching.

TRUE

FALSE

13. Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?

n indicates the number of wavelengths carried by the maximum capacity,

m indicates the rate. The value can be 1, 2, or 3.

r indicates OTM without the OSC function..

OTM-nr.m with OSC signals is OTM-n.m.

14. Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?

① The B2 byte indicates the transmission channel.

② The M1 byte indicates the transmission channel.

③ MS-REI is transmitted from the sink to the source.

④ MS-REI is transmitted from the source to the sink.

⑤ Indicates the number of detected bit errors after the sink receives the MS signals.

①④⑤

②④⑤

①③⑤

②③⑤

15. Which of the following is the frame whose VC-4 J1 byte is indicated by the current frame's AU pointer?

Current frame

Next frame

Previous frame

None of the above

16. When multiple users need to share the same VCTRUNK and use the same VLAN ID, the QinQ technology can be used.

TRUE

FALSE

17. Which of the following statements about the 1+1 protection of cross-connect boards are correct? (Multiple Choice)

The source service board sends services to the active and standby cross-connect boards.

After service cross-connections are completed, the active and standby cross-connect boards send the data of the active cross-connect board to the sink service board.

The sink service board can receive only the data from the active cross-connect board.

The buses of the two cross-connect modules work independently and do not interfere with each other.

The dual-bus system structure indicates that the service board performs dual feeding of data to the cross-connect side and selective receiving of the data on the cross-connect side.

Two cross-connect boards have the same configuartion. Service boards will selectively receive services from one of them based on the quality of services and status of cross-connect boards.

18. In a WDM system, using a dielectric thin film filter (TFF) is ideal when fewer than () wavelengths are used.

19. According to the formula of "ODUk rate = 239/(239-k) x STM-N frame rate”, the ODU4 rate is equal to 239/235 x STM-N frame rate.

TRUE

FALSE

20. Linear MSP (LMSP) has two modes: 1+1 and 1:1. Extra services can be configured for the protection channel only in the 1:1 mode of LMSP.

TRUE

FALSE

Page 3 of 8

21. The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.

TRUE

FALSE

22. Which of the following statements about the MST functional module are correct? (Multiple Choice)

The MST is both the source and sink of the M

The MST implements the BIP-8 statistics calculation of the B2 byte.

The MST returns bit error information, but not the specific number of bit errors.

The MST provides the E2 orderwire channel.

23. A 1510 nm optical supervisory channel can be effectively amplified after it passes an EDFA.

TRUE

FALSE

24. In the frame structure of SDH signals, there are abundant overhead bytes used for operation, administration, and maintenance (OAM). The overhead bytes account for ( ) of all bits in the entire frame and greatly enhance the monitoring functions of the network.

1/10

1/20

1/30

1/40

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

802.1a

802.1d

802.1q

802.11ab

26. 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?

The PS alarm is reported on the tributary board.

The APS-INDI alarm is reported on the XCS board.

The APS-INDI alarm is reported on the system control board.

The APS-INDI alarm is reported on the line board.

27. The frame structure of ODU4 is four times that of ODU1.

TRUE

FALSE

28. The rates of the SF64 and SL64 boards are both STM-64. Therefore, the two boards can be interconnected.

TRUE

FALSE

29. Manual configuration will clear data on the NE side.

TRUE

FALSE

30. 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)

RSBBE

RSFEBBE

MSBBE

MSFEBBE

HPBBE

HPFEBBE

Page 4 of 8

31. Which of the following ITLI-T recommendations defines the OTN frame structure?

694

652

975

709

32. A two-fiber ring topology consisting of three NEs is arranged in the counterclockwise sequence as A, B, and C. Services between A and C occupy the 48th VC-12 timeslot in the first VC-4 on the short path, and services between B and C also occupy the 48th VC-12 timeslot in the first VC-4 on the short path.

In this case, which of the following is the subnet type of the ring protection?

Unidirectional path protection ring

SNCP ring

Bidirectional MSP ring

All of the above

33. Which of the following statements about the sequence of a signal flow between the SDH interface and the cross-connect unit is correct?

SPI<>RST<>MST<>MSP<>MSA<>HPT

SPI<>RST<>MSA<>MSP<>MST<>HPT

SPI<>MST<>RST<>MSA<>MSP<>HPT

SPT<>MST<>MSA<>RST<>MSP<>HPT

34. The K1 and K2 bytes can transmit APS switching signaling, and can also indicate that the multiplex section signal fails.

TRUE

FALSE

35. Which of the following is the functional unit that provides high-speed signal interfaces and processes corresponding signals?

Cross-connect unit

Auxiliary unit

Tributary unit

Line unit

36. Which of the following are the main advantages of SDH? (Multiple Choice)

Standard interfaces

Synchronous multiplexing

Powerful OAM

High compatibility

37. A MAC address consists of 46 bits and is globally unique.

Which of the following is the meaning of the MAC address whose eighth bit is 1?

Unicast address

Bicast address

Multicast address

Broadcast address

38. PDM uses the polarization beam splitter to divide the laser into two perpendicular directions: x and y.

TRUE

FALSE

39. WDM multiplexes the optical signals at multiple rates (wavelengths) over one fiber for transmission. The digital signals carried by these optical signals must have the same rate and data format.

TRUE

FALSE

40. Which of the following communication protocols are used for DCN management on Huawei devices? (Multiple Choice)

HWECC

TCP/IP

FTP

OSI

Page 5 of 8

41. Which of the following statements about extended ECC is incorrect?

Extended ECC is classified into automatic extended ECC and extended ECC in specified mode.

Automatic extended ECC indicates using a straight-through cable to connect the Ethernet ports of two NEs.

Extended ECC in specified mode indicates that the server and client need to be specified.

Automatic extended ECC can be enabled on a maximum of four NEs. In manual extended ECC mode, each server can be connected to a maximum of three clients.

42. Which of the following are communication quality alarms? (Multiple Choice)

Optical port loopback

No login of an NE user

NE communication interruption

Loss of optical signals

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

XML

SNMP

CORBA

44. Which of the following is not the advantage of WDM?

Ultra-large capacity and transparent data transmission

Easy to upgrade and maximizing the protection for existing investments

Completely substituting for SDH devices

Compatible with ail optical switching networks in the future

45. On a Layer 2 switching device, if the Ethernet port is an Access port, the port can receive only the Ethernet frames without VLAN tags or Ethernet frames with the same VLAN ID as the default VLAN ID of the port.

TRUE

FALSE

46. During service configuration, there are two timeslot modes. Huawei uses the interleaved timeslot mode by default.

TRUE

FALSE

47. Which of the following is not a non-linear effect?

Self-phase modulation (SPM)

Dispersion

Raman scattering

Four-wave mixing (FWM)

48. Which of the following is the function of TCM overheads in ODUk signals?

Channel supervisory overhead

Path trace identifier overhead

Tandem connection monitoring overhead

General communication channel overhead

49. Which of the following bytes can be used for the orderwire phone between two REG devices?

E1 and E2

None of the above

50. The SP3D board supports 63 E1 services.

TRUE

FALSE

Page 6 of 8

51. In the case of MSP, you need to set the MSP protocol ID of each NE. To ensure that each ID is unique, you are advised to set the MSP protocol ID to the same value as the NE ID.

TRUE

FALSE

52. Which of following are the configuration modes of new NEs? (Multiple Choice)

Manual configuration

Uploading

Downloading

Copying NE data

53. MSP is a network-level protection scheme. The MSP does not directly protect a service, and the MSP switching and restoration are not affected even if there is no service on the MSP ring.

TRUE

FALSE

54. Which of the following is the frame structure of STM-16?

9*270*1

9*270*4

9*270*16

9*270*64

55. Optical fiber loss includes the bending loss, absorption loss, and scattering loss.

TRUE

FALSE

56. The pointer is used for alignment and indicates the start position of VC-n in the corresponding AU or TU frame. In this way, the receive end can correctly remove the corresponding VC from the STM-N, and then split the VC and C encapsulation to separate low-rate signals, such as PDH. That is, low-rate tributary signals can be directly dropped from the STM-N signal.

TRUE

FALSE

57. Which of the following statements about U2000 license is incorrect?

Each license file corresponds to the equipment serial number (ESN) of one U2000 computer, and therefore can be used only on the corresponding computer.

Formal U2000 license varies depending on operating system platforms. You must apply for a U2000 license based on the specific operating system.

The U2000 license file is named in the "xxxxxxx.dat" format.

Do not modify license files. Otherwise, the license files will fail.

58. Which of the following statements about an MSP ring are correct? (Multiple Choice)

The number of nodes on an MSP ring cannot exceed 16.

When creating a protection subnet, select SDH NEs only. Do not select REG or WDM NEs.

When multiple protection subnets occupy the same port on the same board, you must select "Resource Sharing".

"Assigned by VC4" means that different VC4s are assigned to different protection subnets to achieve MSP only in some channels.

59. Which of the following are optical-layer trails? (Multiple Choice)

OCh

OMS

OTS

OSC

60. Only one TCM can be used at a site.

TRUE

FALSE

Page 7 of 8

61. In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.

TRUE

FALSE

62. Which of the following device domains can be managed by the U2000? (Multiple Choice)

Transport device

Wireless device

Data communication device

Access device

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

128

256

512

64. Which of the following clock working modes support the ITU-T G.781 standard? (Multiple Choice)

Tracing

Holdover

Free-run

Master/Slave

65. Which of the following operations may interrupt NE services? (Multiple Choice)

Searching for protection subnets

Searching for trails

Deactivating trails

Downloading NE data

66. Configuring an EPLAN service as a ring is not recommended. If the EPLAN service is configured as a ring, the STP protocol must be enabled on the network to prevent broadcast storms.

TRUE

FALSE

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

TRUE

FALSE

68. When the U2000 data is backed up using scripts, the backup is fast because the backup files are small.

TRUE

FALSE

69. Which of the following effects is used by the Raman amplifier?

Self-phase modulation (SPM)

Dispersion

Raman scattering

Four-wave mixing (FWM)

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

9*9*4

9*8*4

9*9*8

9*8

Page 8 of 8

71. When the lower-order resources of a device are insufficient, which of the following measures can be taken? (Multiple Choice)

Configure a VC4 server trail.

Combine available lower-order resources.

Use a cross-connect board with a larger lower-order cross-connect capacity.

Configure VC4 services.

72. After the U2000 delivers configuration data to an NE, if the verification fails on the SCC board, the NE enters the installation state.

TRUE

FALSE

73. Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.

TRUE

FALSE

74. TU-AIS is frequently encountered during network maintenance.

Which of the following alarms can trigger the TU-AIS alarm? (Multiple Choice)

AU-LOP

R-LOS

HP-TIM

B2-EXC

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

TRUE

FALSE

76. When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used.

TRUE

FALSE

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

78. An optical amplifier unit compensates for line loss and extends transmission distance. Connecting multiple optical amplifier units in cascading mode can infinitely extend transmission distance of a system.

TRUE

FALSE

79. Which of the following working windows is indicated by "2" in the optical module parameter "L-64.2"?

880 nm

1310 nm

1550 nm

1510 nm

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

/U2000/server

/U2000/client/log

/U2000/server/log

/U2000/client

HCIA-Transmission(Huawei Certified ICT Associate-Transmission) H31-311-ENU Online Free Test

Author