2023 Updated Huawei H31-341_V2 5-ENU Exam Dumps

Text Material Preview

H31-341_V2.5-ENU HCIP-Transmission V2.5 exam dumps questions are the
best material for you to test all the related Huawei exam topics. By using the
H31-341_V2.5-ENU exam dumps questions and practicing your skills, you can
increase your confidence and chances of passing the H31-341_V2.5-ENU exam.
Features of Dumpsinfo’s products
Instant Download
Free Update in 3 Months
Money back guarantee
PDF and Software
24/7 Customer Support
Besides, Dumpsinfo also provides unlimited access. You can get all
Dumpsinfo files at lowest price.
HCIP-Transmission V2.5 H31-341_V2.5-ENU exam free dumps questions are
available below for you to study. 
Full version: H31-341_V2.5-ENU Exam Dumps Questions
1. Which of the following descriptions about the requirements for fiber optic deployment is wrong?
A. Labels at both ends of the fiber are filled in correctly and clearly, in neat positions, and in the same
direction
B. Connection points should be clean
C. There should be no forced pulling and unnatural bending of the optical fiber layout, and no other
cables and objects are pressed on it after deployment
D. The optical fiber is not free to twitch in the buckle
E. The connecting parts such as bare boards and flanges must be connected reliably
Answer: D
2. The EPL service exclusively uses the bandwidth on the line. This is very secure. Dedicated line
application for VIP customers.
 1 / 28
https://www.dumpsinfo.com/unlimited-access/
https://www.dumpsinfo.com/exam/h31-341_v2-5-enu
A. True
B. False
Answer: A
3. In the path search process of the U2000 network management, the path search management
module first scans the cross-connections of each network element, constructs sub-paths according to
the cross-connections of adjacent network elements, and tries to merge these sub-paths at the same
time. Which of the following sub-paths is legal?
A. Subpaths form a loop
B. The path does not pass through the fiber
C. The original destination is not the end point of the subpath or the optical port of the subnet
D. The sub-path terminates on the pre-configured network element
Answer: D
4. The key to NG WDM system fault location is to accurately locate the fault to a single station.
A. True
B. False
Answer: A
5. Which of the following operations may interrupt network element services? (Multiple choice)
A. Search protection subnets
B. Find trails
C. Disable trails
D. Download network element data
Answer: CD
6. At an OLA site, the maximum output optical power of the OAU is 20 dBm. It is used in an
80-wavelength C-band system. 10 waves are actually enabled. There is no spectrum analysis board,
and the combined signal needs to be used for commissioning. How much dBm should be adjusted for
the output optical power of the OUT port?
A. 20 dBm
B. 5 dBm
C. 1 dBm
D. 11 dBm
Answer: D
7. Compared with traditional SDH network, what are the characteristics of ASON network? (Multiple
choice)
A. Support Mesh networking protection, which enhances the survivability of the network.
B. Support traffic engineering control, the network can dynamically adjust the logical topology of the
network in real time according to the business needs of the customer layer; realize the optimal
configuration of network resources.
C. Support automatic topology discovery
D. Support end-to-end service automatic configuration
E. Support differentiated services, and determine the required protection level according to the
service level of the client layer signal.
Answer: ABCDE
 2 / 28
https://www.dumpsinfo.com/
8. Which of the following is the overall structure of the WDM system with N-channel wavelength
multiplexing? (Multiple choice)
A. Optical wavelength conversion unit
B. WDM unit
C. Optical amplification unit
D. Monitoring unit
E. Intersection unit
Answer: ABCD
9. When which of the following situations occurs, the ODUk_PM_DEG alarm will be reported on the
network management?
A. The ODU layer, that is, M, sets the bit error limit when the number of bit errors exceeds the
specified bit error excess threshold
B. When the number of bit error degradation in the ODU layer PM segment exceeds the specified
error degradation threshold
C. When the number of bit errors due to signal degradation at the ODUk TCM layer exceeds the
specified excess bit error threshold
D. ODUk TCM layer error code exceeds the threshold when the number of error codes exceeds the
specified error degradation threshold
Answer: B
10. What are the PWRA, PWRB, and PWRC on the SSN1GSCC board corresponding to the alarm
objects? Which of the following options is correct?
A. Road A-48V power indicator light B-way-48V power indicator system+3.3V backup power indicator
B. Road A-48V power indicator light B-way-48V power indicator system+5.0V backup power indicator
C. -48V power indicator system+5.0V backup power indicator system+3.3V backup power indicator
D. -48V power indicator system+3.3V backup power indicator system+5.0V backup power indicator
Answer: A
11. In order to meet the specified synchronization quality requirements, corresponding requirements
must be made on the network for synchronous transmission, and the specified networking rules must
be followed during network planning. Which of the following is wrong?
A. In one clock transmission direction, the number of stations between the transit office clocks cannot
exceed 30
B. The number of switching office clocks cannot exceed 10
C. The total number of devices in one direction cannot exceed 60
Answer: A
12. Which of the following descriptions about the MPLS architecture is correct? (Multiple choice)
A. The control plane is connection-oriented and is responsible for label allocation, establishment of
label forwarding tables, establishment and removal of label switching paths, etc.
B. MPLS uses short and fixed-length labels to encapsulate packet messages, and realizes fast
forwarding on the forwarding plane
C. The forwarding plane is also called the data plane. It is connectionless-oriented and adds and
deletes labels to packets. At the same time, the received packet data is forwarded according to the
label forwarding table
 3 / 28
https://www.dumpsinfo.com/
D. The main application of MPLS technology is to build a tunnel to carry various types of services
(such as TDW, Ethernet) transmitted by PWE3, and realize end-to-end transmission of services in the
packet network
Answer: BD
13. Inter-board crossover mainly includes two application scenarios: client-side service drop-in and
WDM-side service pass-through.
A. True
B. False
Answer: A
14. Which of the following IP addresses is not a private IP address?
A. 10.157.175.20
B. 127.0.0.10
C.172.28.192.1
D. 192.168.1.1
Answer: B
15.96-wave OTM sites need to be configured with ITL for multiplexing and OBU amplifiers for signal
amplification.
A. True
B. False
Answer: B
16. Which of the following boards can be inserted into the OSN 9800 U64 subrack?
A. TNF5UNQ2
B. TN18LSC
C.TN54GS4
D. TNV1N401
Answer: D
17. Systems with a rate of 10G and below are less affected by polarization mode dispersion, which
can generally be ignored.
A. True
B. False
Answer: A
18. In a chain network, NE1, NE2, and NE3 are all OADM sites, and NE1 is a gateway network
element, and uses OSC communication. When the optical monitoring board at the intermediate site
NE2 fails, which of the following phenomena will not occur?
A. The optical monitoring signal between NE1 and NE3 is interrupted
B. The monitoring board in NE2 reports the BD_STAIUS alarm
C. The OSC_LOS alarm is reported on the monitoring boards in NE1 and NE3
D. Service interruption between NE1 and NE3
Answer: D
 4 / 28
https://www.dumpsinfo.com/
19. Which of the following descriptions about commissioning of super-100G and 100G hybrid
transmission systems is wrong?
A. The super 100G channels with different modulation modes have different main input fiber optic
power indicators.
B. To expand the capacity of the 100G system beyond 100G channels,it is necessary to use the
indicators used in the initial commissioning of the network for commissioning to ensure that the
combined optical power remains unchanged.
C. For super 100G and 100G mixed transmission systems, the requirements for the input optical
power indicators of different fiber types are the same.
D. For super 100G channels with different channel intervals, the main input fiber optic power index is
different.
Answer: D
20. The frame frequency () of different levels of STM level, the transmission rate is different
Answer: the same
21. Use the following methods to create an OCh path. After creation, which of the following need to
search for the path? (Multiple choice)
A. Single plate method
B. Path method
C. Single station method
Answer: AC
22.What parameter does the ECC protocol use as the unique identifier of the network element, and
NCE also uses it as the keyword for retrieval when identifying different network elements in the
interface and database?
A. Network management IP
B. Network element ID
C. Node ID
D. Extension ID
Answer: B
23. The indicator light of OptiXtrans E6600 LOSn is red and blinks once every 3 seconds. Which of
the following is it?
A. The optical port of the single board reports the R_LOS alarm
B. The optical port of the single board reports the MS_RDI alarm
C. The board is not in place
D. The optical module is not in place
Answer: B
24. Which of the following descriptions about branch SNCP protection is wrong?
A. The cross granularity is GE or Any signal
B. When configuring branch SNCP, you need to set the subtype of SNCP
C. Tributary SNCP protection uses the dual-send and selective-receiving function of the electrical
layer crossover to protect the client-side services connected to the tributary board
D. The trigger conditions are that the board is not in place, SF, SD
 5 / 28
https://www.dumpsinfo.com/
Answer: A
25. Which of the following logical function blocks is used to generate an R-LOS alarm?
A.RST
B. MST
C. MSA
D. SPI
Answer: D
26. Which of the following is the correct order of clock source quality grades from high to low?
A. LPR->SEC->SSU-A
B. PRC->SEC->SSU-A
C. PRC->SSU-B->SEC
D. SEC->SSU-A->SSU-B
Answer: C
27. In an 80-wave system, using the TMB1DAP (TM150AC106) amplifier, the total input power is
known to be -19~1 dBm. The typical gain is 19 D, what is the nominal single-wavelength output
optical power?
A. 1 dBm
B. 2dBm
C. 0 dBm
D. 4 dBm
Answer: A
28. Regarding the following three types of ODUk SNCP protection, which of the following types
cannot be configured in the scenario where the working or protection path of the service is carried by
two or more channels?
A. SNC/I
B. SNC/S and SNC/N
C. SNC /N
D. SNC/S
Answer: A
29. The signal flow analysis method first divides the whole network into several OMSs, judges the
section of the fault, and then judges whether the direction of the fault is one-way or two-way, and
finally locates the fault along the direction of the signal flow from front to back according to the fault
information.
A. True
B. False
Answer: B
30. Which of the following is the common point between the two-fiber bidirectional multiplex section
shared protection ring and the four-fiber bidirectional multiplex section protection ring?
A. Section switching
B. Agreement required
 6 / 28
https://www.dumpsinfo.com/
C. The multiplex section protocol travels on the protection channel
D. The network capacity is KSTM-N
Answer: B
31. Which of the following are the service board types of MSTP equipment? (Multiple choice)
A. Interface board
B. Service Processing Board
C. Service processing board with interface
D. Auxiliary board
Answer: ABC
32. Among the following boards, which boards support Ethernet L2 switching function? (Multiple
choice)
A. TEM28
B. LEM24
C. ELOM
D. LEX4
Answer: ABD
33. The optical and electronic racks of the OSN 9800 equipment communicate through master-slave
sub-rack cascading, and are connected through the GE1/2 ports on the CTU single board.
A. True
B. False
Answer: A
34. The collection and storage of on-site data includes regular collection when the equipment is in
normal operation and collection when the equipment fails the network. Generally, before
troubleshooting, maintenance personnel must first collect and save on-site data.
A. True
B. False
Answer: A
35. Which of the following description about using the synchronous method to create fibers is wrong?
A. There is no need to create an optical fiber that exists on both the NMS side and the NE side, and
whose information is completely consistent.
B. If there are fibers that have not been created on the U2000 or NEs, they need to be synchronized
or created.
C. The existence of conflicting fibers does not affect the configuration of the path, so it can be ignored
D. Conflicting fiber refers to the fiber configured on the network element side and the configured fiber
on the network management side.
Answer: C
36. APAUSE frames using reserved multicast addresses are not forwarded by bridges or switches.
This way the PAUSE frame does not generate any other information.
A. True
B. False
 7 / 28
https://www.dumpsinfo.com/
Answer: A
37. Draw a business path map;
38. Before performing optical power commissioning on the ROADM board, configure virtual optical
layer services; otherwise, the ROADM board blocks all wavelengths by default.
A. True
B. False
Answer: A
39. If you want to establish a GE-level path on the network management, which of the following steps
are necessary? (Multiple choice)
A. Configure the wavelength
B. Configuring Logical Fiber Connections
C. Create OCh path
D. Create an ODUk path
Answer: ABC
40. Which of the following descriptions are correct? (Multiple choice)
A. The SATOP encapsulation type processes the CES service by packaging the 32 time slots in the
E1 frame as a whole and then transparently transmitting them to the peer end.
B. The CESoPSN protocol can identify the structure of TDMN services. For idle time slot channels,
the channel cannot transmit, but only extracts useful time slots from the service stream and
encapsulates them as PWE3 messages for transmission.
C. PCM30 frame format of E1 frame: except that time slot 0 is used as a synchronous time slot and
does not carry voice, time slot 5 and time slot 16 also cannot carry voice because random signaling is
to be transmitted.
D. PCM31 frame format of E1 frame: Except that 16 time slots are used as synchronous time slots
and do not carry voice, it can also carry 31 channels of voice.
Answer: ABD
41. In the SDH optical synchronous transmission system. Which of the following bytes is used to
transmit the quality and usage information of the clock source?
A.G1
B. S1
C. N1
D. M1
Answer: B
42. Which of the following IP addresses belong to private network IP addresses? (Multiple choice)
A. 10.0.0.1
B. 192.168.0.1
C.10.255.0.1
D.172.128.0.1
Answer: ABC
 8 / 28
https://www.dumpsinfo.com/
43. In the same subnet, when configuring NNI port attributes, the IP addresses of the ports at both
ends of different links can be repeated.
A. True
B. False
Answer: A
44. For a coherent system, the reference point of the fiber-in optical power in the non-standard fiber-in
scenario is the output port of the optical amplifier board at the sending end.
A. True
B. False
Answer: A
In the 965.G.652 optical fiber and LEAF optical fiber system, the coherent mixed transmission of
super 100G and 100G needs to set up an isolation zone.
A. True
B. False
Answer: B
45. In the electrical layer application scenario of end-to-end tributary board interconnection, what are
the interconnection requirements for tributary boards? (Multiple choice)
A. FEC working status is the same
B. Same type of business
C. Same optical channel
D. The business mapping path is the same
Answer: BC
46. The receiving overload point of the APD diode is 0dBm.
A. True
B. False
Answer: B
47. The frame structure sizeof the OTUk frame is variable.
A. True
B. False
Answer: B
48. Direct modulation is also called EA modulation. It does not directly modulate the light source, but
adds a modulator to the output path of the light source to modulate the light wave. The modulator
actually acts as a switch.
A. True
B. False
Answer: B
49. The frame alignment signal is used for signal frame alignment. When the system detects FAS
abnormality, it reports () or 0Uk 10FLo alarm.
Answer: OTUK-LOF
 9 / 28
https://www.dumpsinfo.com/
50. Which of the following description of equipment operation is wrong?
A. You need to wear anti-static wrist or gloves during operation to avoid damage to the board caused
by static electricity
B. CLASS 1M means that the light power is low and will not cause damage to eyes or skin
C. It is necessary to regularly clean the dust filter to facilitate heat dissipation
D. Equipment requires a safety ground
Answer: B
51. What are the differences between the AU pointer and the TU pointer? (Multiple choice)
A. The scope of the instruction is different
B. The number of bits occupied by the pointer value is different
C. The bytes stored in the pointer value are different
D. The unit of adjustment is different
Answer: ACD
52. The OTUCn signal consists of n interleaved frames of 4080 columns and 4 rows, and n can take
values of 2, 4, etc., representing 200G and 400G respectively.
A. True
B. False
Answer: B
53.CC is used to detect the unidirectional connectivity between any pair of MEPs in the MEG. If the
own-end MEP does not receive a CCM packet within 3 times the packet sending period, it is
considered that there is a problem with the connectivity between the source-end MEP and the
destination-end MEP.
A. True
B. False
Answer: B
54. Which of the following descriptions about the performance parameters of line optical fiber quality
monitoring is wrong?
A. Increasing the pulse width will increase the duration of laser emission, that is, increasing the
injected energy can obtain a larger dynamic range, but increasing the pulse width will lead to a larger
dead zone.
B. The total fiber loss will affect the actual detection distance. The dynamic range of the same
detection mode is fixed. The greater the total fiber loss, the smaller the detection distance.
C. The width of the light pulses emitted by the detection in different modes. Different pulse widths
affect the distance accuracy and monitoring distance. The larger the pulse width, the larger the
dynamic range, the longer the test distance, and the higher the distance measurement accuracy.
D. The line optical fiber quality monitoring function adds the results of multiple measurements and
takes the average value to improve the monitoring accuracy. The actual time required from the start
of detection to the return of the detection results by the software will be longer than the set "detection
time".
Answer: C
 10 / 28
https://www.dumpsinfo.com/
55. For OSN series equipment, when the standby board is normal, which of the following operations
will not cause the active/standby switchover of the crossover or clock board?
A. Hard Reset Crossover or Clock Motherboard
B. Logically delete the main cross and clock board
C. The upper and lower handle bars of the main board are opened at the same time
D. Issue the active/standby switchover command
Answer: C
56. Which of the following is not an advantage of WDM?
A. Super large capacity and transparent data transmission
B. Ease of upgrade and maximum protection of existing investments
C. Completely replace SDH equipment
D. Compatible with all optical switching networks in the future
Answer: C
57. For the relay type OTU board, which of the following alarms will continue to be sent downstream?
(Multiple choice)
A. OTUk_BDI
B. TUk_LOF
C. DUk_PM_BDI
D.ODUk_PM_TIM
Answer: BD
58. Among the following cabinet types, which ones can be installed with 0ptiXtrans E9624 subracks?
(Multiple choice)
A. A63B
B. APM3000
C. APM5000
D.A66B
Answer: AD
59. SOTU stands for Single Optical Transport Unit Interface, and MOTU stands for Multiple Optical
Transport Unit Interface.
A. True
B. False
Answer: A
60. Which of the following descriptions about the OTN optical layer structure is correct? (Multiple
choice)
A. The optical layer path of the service signal includes 0Ch, OMS, OTS
B. OTN optical structure includes SOTUm interface and NOTUm interface
C. The optical layer overhead can only be transmitted through the optical monitoring channel OSC
D. The optical layer path of the service signal has an overhead part and a payload part
Answer: AD
61. The transmitting light source in the integrated DWDM system must strictly abide by the G.693
 11 / 28
https://www.dumpsinfo.com/
optical port specification.
A. True
B. False
Answer: B
62.() is a parameter used to describe the reliability of the transmission system
Answer: BER
63. Which of the following descriptions about the characteristics of optical fibers are correct? (Multiple
choice)
A. G652 fiber is the single-mode fiber with the best performance at 1310 nm
B. G653 fiber is called dispersion-unshifted fiber or the best performance fiber at 1550 nm
C. G654 optical fiber is mainly used in submarine optical fiber communication that requires a long
regenerative distance
D. G655 fiber is a non-zero dispersion-shifted single-mode fiber, suitable for DWDM system
applications
Answer: ACD
64. In the following OTN frame structure overhead, which item represents the path tracing identifier?
A. BDI
B. TTI
C. BIP8
D. GCCO
Answer: B
65. When inserting LCK to the ODUk signal at the local end, what processing will the downstream
station system perform? (Multiple choice)
A. Download ODUk_AIS information
B. Insert ODUk_PM_LCK alarm
C. Return ODUk_PM_BDl
Answer: AC
66. Which of the following descriptions about the TMB1AST2 board is correct? (Multiple choice)
A. When used with the DSFIU01/DSFIU02 board, the TM1/RM1 optical port needs to be configured
with a 1511 mm wavelength optical module, and the TM2/RM2 optical port needs to be configured
with a 1491 rm wavelength optical module.
B. TM1 optical port must be connected with TMI1 optical port.
C. When used with the DFIU03/DFIU04 single board, the OSC optical port needs to be equipped with
an optical module with a wavelength of 1511 rm.
D. TMB1AST2 board supports IEEE 1588v2 clock processing function and OTDR function.
Answer: ABC
67. The main difference between an open DWDM system and an integrated DWDM system is
whether one of the following technologies is used?
A. Wavelength conversion technology
B. Optical monitoring technology
 12 / 28
https://www.dumpsinfo.com/
C. Optical amplification technology
D. Multiplexing and demultiplexing technology
Answer: A
68. Which of the following scenarios is the instrument test method applicable to? (Multiple choice)
A. Locate the faulty board
B. Device docking problem
C. Troubleshoot transmission equipment external problems
D. Problems with equipment performance indicators
Answer: BC
69. For an amplifier, the smaller its noise figure (NF) value, the less noise it introduces, and the longer
distance it can transmit under the same conditions.
A. True
B. False
Answer: A
70. To prevent the optical power at the receiving end of the OTU board from being too high, it is
necessary to configure a fixed attenuator according to the actual optical power. Fixed attenuators are
usually configured at the transmit end.
A. True
B. False
Answer: B
71. The value of the NFAS byte increases with the sequence number of the OTURk/ODUk base
frame, how many base frames does it include at most?
A. 256
B.64
C.128
D.512
Answer: A
72. When the bridge uses IV L learning mode. Create an entry in the MAC address table based on
the original MAC address and original port of the data frame. This entry applies to all VLANs
A. True
B. False
Answer: B
73. Regarding the slot setting of the OSN 6800 subrack, which of the followingdescriptions is wrong?
A. IU19 and IU20 are fixed at the base for plugging and placing the power access board PIU. Each
PIU can independently support subrack power supply
B. U9 and IU10 slots can be used for cross-connect board XCS. Each XCS can independently
support service crossing between all slots
C. If the IU17 slot is not configured with SCC, the OTU single board can be inserted to provide the
service cross function
D. IU17 and IU18 slots can be used for the main control board SCC. Each SCC can independently
 13 / 28
https://www.dumpsinfo.com/
support subrack management
Answer: C
74.NG WDM system fault analysis methods include signal flow analysis method, alarm analysis
method, instrument test method, () and replacement method.
Answer: Loopback method
75. On an OTN network, a large number of bit errors occurred on multiple waves. The 0TU board
reports alarms such as OTUk EXC, OTUK_DEG, BEFFEC_DEC, B1_EXC, and B1_SD. What is the
reason for the impossibility?
A. The ambient temperature is too high
B. The pigtail loss of the multiplexing part is too large
C. DCM module configuration is unreasonable
D. The AST2 board is faulty
Answer: C
76.The difference between MPLS-TP OAM and MPLS OAM does not include which of the following?
A. Added functions such as CC\AIS\LB\LT
B. Different message formats
C. OA message transmission cycle changes, canceled 3.3ms, 10ms
D. You can save some alarms in the label, such as TS\WDT\VDIEXPIEG
Answer: C
77.64K SNCP protection is used to protect 64K services. Which of the following configurations can
support 64K SNCP protection? (Multiple choice)
A. DXM with FXSO12
B. DXM with DX1
C. DXM with AT8
D. DXM with AT6
Answer: ABCD
78. Among the following suggestions, which of the following protocols are related to WDM? (Multiple
choice)
A. G671
B. G681
C. G691
D. G692
Answer: ABD
79. The calculation of BIP-8 belongs to one of the source functions of the OTUk layer.
A. True
B. False
Answer: A
80. Which of the following descriptions about the cross-connect board of the OSN 8800 T64 subrack
 14 / 28
https://www.dumpsinfo.com/
is correct? (Multiple choice)
A. XCT+SXM can support ODUO, level 1, 2, and 3 crossover.
B. XCT+SXM can be used together to provide an ODUK crossover with a total capacity of 2.56Tbit/s.
C. XCT+SXM can be regarded as a whole when working. If one board fails, the two boards will be
switched together.
D. The enhancer rack can only be configured with UXCT+USXM or UXCT+USXH
Answer: BC
81. Which of the following instruments/single boards can be used to test the OSR indicators of 10G
systems? (Multiple choice)
A. Spectrum Analyzer
B. MCA8
C. SDH Analyzer
D. Optical power meter
Answer: AC
82. Which of the following is a VLAN classification method? (Multiple choice)
A. By MAC address
B. Through the port
C. By subnet
D. By agreement
Answer: ABCD
83. OOS overhead is non-associated overhead. Which of the following descriptions about OOS
overhead is wrong?
A. Use the 21st-23rd time slot in the optical supervisory channel (OSC) signal frame structure to
transfer overhead
B. OOS overhead occupies 2Mbit/s bandwidth
C. OOS overhead is not enabled by default
D. OOS overhead includes OTS, OMS/OCh overhead
Answer: C
84. When configuring the basic properties of the Ethernet interface of the EM20 single board, the
default value adopted for the "maximum frame length" is?
A. 1522
B.1491
c.1490
D. 9600
Answer: D
85.OLA sites can also use ESC.
A. True
B. False
Answer: B
86. SES: 5% or more errored blocks or at least one defect in one second
 15 / 28
https://www.dumpsinfo.com/
(OCI/AIS/LCKYAE/LTC/TIM/PLM).
A. True
B. False
Answer: B
87. For a system without an optical amplifier, the upper threshold of the received optical power of the
wavelength division side of the OTU single board and the line single board is -3 dB at the receiving
overload point of the optical module.
A. True
B. False
Answer: B
88. Which of the following are necessary prerequisites for creating a bidirectional MPLS Tunnel?
(Multiple choice)
A. The user has "Administrators" and above network management user rights
B. The LSR ID of each network element has been correctly configured
C. Determine MPLS Tunnel Bandwidth
D. The port properties have been correctly configured
Answer: ABCD
89. One SCC board and one PANEL board can be configured on the Optixtrans DC908 machine box,
or it can be configured as 1+1 dual master control.
A. True
B. False
Answer: A
90.OChr means use of electrical monitoring techniques
A. True
B. False
Answer: A
91. Which of the following IP addresses is a Class C IP address?
A. C2.A8.D2.e1
B. 10.110.192.111
C. 10011010.01101110.10000000.01101111
D. 127.0.0.1
Answer: A
92. When static aggregation adds or deletes member ports, the LACP protocol must be run
A. True
B. False
Answer: A
93. The alarm detection of the optical layer overhead is realized through the optical layer overhead
OOS. Which of the following descriptions about the optical layer overhead alarm is correct?
 16 / 28
https://www.dumpsinfo.com/
A. As long as the optical monitoring channel is enabled, the optical layer overhead alarm can be
reported
B. Optical layer overhead alarms are automatically reported by default
C. Whether the optical layer overhead alarm can be accurately reported has nothing to do with the
logical fiber connection configuration of the system
D. The WDM system does not enable the optical monitoring channel, and the optical layer overhead
alarm cannot be reported
Answer: D
94. Please drag the correct answer to the number in the picture.
Answer:
 17 / 28
https://www.dumpsinfo.com/
95. Which of the following network element forms completes the cross-multiplexing between branches
and lines, lines and lines, and service up and down?
A.TM
B. ADM
C.REG
D. DXC
Answer: B
96. Which of the following data does not belong to the network layer data on the network
management side?
A. Uploaded configuration data
B. Securing Subnet Information
C. Fiber and cable connection information between network elements
D. Path information
Answer: C
97. If the SNCP services with the same source-sink or route are grouped, the SNCP switching speed
can be improved.
A. True
B. False
Answer: A
98. When inserting LCK to the ODUk signal at the local end, which processing will the downstream
station system not perform?
A. Report ODUk_PM_LCK alarm
B. Insert DDUK_AIS information
C. Return DDUk_PM_BDI
D. Down plug DDUk_PM_LCK alarm
Answer: D
99. Which of the following factors are considered that ASON supports routing strategies based on?
(Multiple choice)
A. load
B. Node type
c. distance
D. Hop count
Answer: ACD
100. Which of the following bytes in the regenerator section overhead are associated with ROOF and
R-LOF? (Multiple choice)
A. A1
B. A2
C. B1
D.B2
 18 / 28
https://www.dumpsinfo.com/
Answer: AB
101. For optical amplifiers and regenerators, which of the following are correct? (Multiple choice)
A. Higher regenerator cost
B. When the regenerator works at a specific bit rate and a specific frame format
C. Where the amplifier can work at any bit rate and frame format
D. Optical amplifiers are rarely used and regenerators are commonly used
Answer: ABC
102. Among the following boards, whether the protection is configured or not, which options will
interrupt the services passing through the board if the board is replaced? (Multiple choice)
A. Optical power amplifier board
B. Packet board
C. Optical multiplexing and demultiplexing boards
D. Light protection veneer
Answer: ACD
103. Which of the following descriptions about electrical layer scheduling is wrong?
A. Inter-board cross-connect refers to the cross-connect configured between different boards. Inter-
board cross-connection dispatches ODUk services between boards in a subrack through the
backplane and centralized cross-connection boards.
B. Intra-board cross-connect refers to thecross-connect configured between different ports on the
same board.
C. TTA and TDC boards support aggregation mode and non-aggregation mode.
D. In the aggregation mode application scenario, it is necessary to cross within the board first, and
then cross between boards.
E. All cross-connects need to be configured on the network management system.
Answer: C
104. Loopback is a common operation for daily maintenance and troubleshooting. Which of the
following description of loopback operation is correct? (Multiple choice)
A. It is necessary to consider increasing the optical attenuation when performing hardware loopback
operation on the optical port
B. After performing the inner loopback, the signal flows to the outside of the WDM network element
C. Hardware loopback is the loopback of the optical port and the electrical port with a pigtail and a self-
loop cable.
D. After performing the outer loopback, the signal flows to the inside of the WDM network element
Answer: ABD
105. Which of the following device domains can be managed by U2000? (Multiple choice)
A. Transportation equipment
B. Wireless devices
C. Data communication equipment
D. Access the device
Answer: ABC
 19 / 28
https://www.dumpsinfo.com/
106. Which of the following ROADW boards contains the core component WSS?
A. RMU9
B. TD20
C. RDU9
D.WSD9
Answer: D
107. In the process of configuring E-LAN, the "MAC address" learning mode can be set to SVL and
IML. SVL is independent VLAN learning, /VL is shared VLAN learning.
A. True
B. False
Answer: A
108. Optical fiber and LEAP optical fiber systems, 1006 and 106 mixed transmissions need to set up
isolation bands, and only one-sided adjacency is supported, and double-sided adjacency is
prohibited. 100G is preferentially configured with long wavelengths, and 10G is configured with short
wavelengths.
A. True
B. False
Answer: A
109. Which of the following statements about clock sources is wrong?
A. The internal clock source has the lowest priority due to low precision
B. Usually the tributary clock is not used as the clock source of the device
C. Select the same SSM protocol for all NEs in the clock protection subnet
D. If the standard SSM protocol is enabled, you need to set the clock source ID
Answer: D
110. On the OptiXtrans E9624/OptiX OSN 9800 M24, which of the following signals can the
TNG3CXCS board implement? (Multiple choice)
A. Packet
B. VC-12
C. ODUk
D. VC-4
Answer: ACD
111. Which of the following statements about MSP rings are true? (Multiple choice)
A. The number of nodes on the MSP ring cannot exceed 16
B. Select only SDH NEs when creating a protection subnet. Do not select REG or WOM network
elements
C. "Resource sharing" must be selected when multiple protection subnets occupy the same port on
the same board
D. Allocation by VC4 means that different VC4s are allocated to different protection subnets to
implement MSP2Q only in certain channels
Answer: ABCD
 20 / 28
https://www.dumpsinfo.com/
112. The gain of the OAU single board is 23db, and 1% of the total output power of the OAU single
board is used for MON detection. Now the output optical power of the MON port is tested to be -
8dbm, and the input optical power of the IN port of the OAU single board is?
A. -11dbm
B. -13dbm
C. -15dbm
D. -21dbm
Answer: A
113. The ECC protocol uses the network element ID as the unique identification of the network
element. When NCE identifies different network elements in the interface and database, it also uses
the network element ID as the keyword for retrieval.
A. True
B. False
Answer: A
114. Which of the following descriptions about OL, OLA and OPC boards is wrong?
A. All three boards can realize the function of optical signal amplification
B. The OL single board is used for the sending end and the receiving end
C. The OLA board is used in the relay site
D. The OPC board has different functions depending on the inserted modules
Answer: A
115. E&M signals define a connection type between a relay device and a signaling unit. Which of the
following are relay devices?
A. Telecom exchange
B. PBX
C. E&M Voice Exchange
D. Softswitch platform
Answer: A
116. Which of the following descriptions about the UXCL board and the SXCH board are correct?
(Multiple choice)
A. Both have cross function to complete the scheduling of services in the subrack
B. Both support in-band DCN and out-of-band DCN functions
C. Both support network element data backup function
D. Both support master and slave subracks
Answer: AC
117. The unit of physical layer data in the OSI reference model is (), and the unit of data link layer
data is ().
Answer: bits | frames
118. The CX plug in OSN550 includes a function board integrated system control and communication
(SCC) unit cross-connect unit and clock unit. According to the functions and access functions
provided by OSN550. There are many types of function boards.
 21 / 28
https://www.dumpsinfo.com/
A. True
B. False
Answer: A
119. () is called the optical transmission section in Chinese, and () is called the optical multiplexing
section in Chinese.
Answer: OTS | OMS
120. Both the Ping function and the Traceroute function detect the bidirectional connectivity of the
tunnel and PW by exchanging MPLS echo request and MPLS echo reply messages.
A. True
B. False
Answer: A
121. In the G.652 and LEAF optical fiber system, isolation bands need to be set when super 100G
and 10G are mixed.
A. True
B. False
Answer: A
122. Which of the following is correct about the processing of data frames by the ports of the data
board? (Multiple choice)
A. The port set as the tag Aware attribute can only discard the data without vlan tag
B. Hybrid ports can realize mixed transmission of tag and untag services
C. It is not necessary to set the default VLAN ID of the port when the Ethernet port is set to Tag
aware, and it is only necessary to set the default VLAN ID of the port when it is set to access
Answer: AB
123. If a ROADM site adopts WSS+RMU configuration, which of the following impact on SOM is
wrong?
A. If the RMU is used locally to add waves and has an optical amplifier, the OSNR value of the
wavelength detected by the SOM in the pass-through direction will deviate from the actual value
B. There is an optical amplifier locally but no filter. The full-wave noise of the local optical amplifier
affects the OSNR of the wavelength in the pass-through direction.
C. The source and sink optical amplifiers of the optical crossover at this site must be in the same
network element
Answer: A
124. The optical amplification unit can make up for the line loss and increase the transmission
distance, and the system transmission distance can be extended to infinity through multi-level
cascading.
A. True
B. False
Answer: B
 22 / 28
https://www.dumpsinfo.com/
125. Which of the following descriptions about the EX40 board is wrong?
A. The board supports online optical power monitoring
B. Single board supports application in dual-fiber bidirectional system
C. Enhanced 40-wave multiplexer/demultiplexer board
D. The maximum difference in insertion loss of each channel is not more than 5dB
Answer: D
Explanation:
126. Which of the following methods to avoid discrete paths is correct? (Multiple choice)
A. Fiber cut or switchover tests should be performed on paths with protection routes to ensure
complete and standardized configurations.
B. Try to use the path function for configuration.
C. Guide users to learn business configuration specifications.
D. For services configured on a single station, path search must be performed on the network
management system to ensure complete and standardized service configurations.
Answer: ABCD
127. Which of the following boards can realize the broadcast function of service signals in the
receiving direction? (Multiple choice)
A. DWSS20
B. WSMD9
C. TD20
D.WSD9
Answer: ABCD
128. For SDH equipment, in the frame structure of STM-N, the rate correspondingto each bit is ()
Kb/s
Answer: 8
129. Which of the following descriptions about oTN optical layer interfaces OTM-nm and OTM-nr.m is
wrong?
A. m represents the speed, which can only take the value of 1, 2, 3
B. OTM-nr.m plus osC signal becomes OTM-nm
C. r indicates that the 0T call has removed some functions, here it means that the 0c function has
been removed
D. n represents the number of waves carried at the highest capacity
Answer: A
130. Which of the following description about MPLS (Multiprotocol Label Switching) is wrong?
A. MPLS adopts a dual-plane structure, which is divided into a control plane and a forwarding plane.
The control plane is connection-oriented, and the forwarding plane is connectionless-oriented.
B. MPLS packet forwarding is based on labels.
C. In the field of packet transmission, the main application of MPLS technology is to build tunnels to
carry various types of services (such as: TDM, ATM, Ethernet) transmitted by PWE3, and realize end-
to-end transmission of services in the packet network.
D. MPLS is not a service or application, but a standardized routing and switching technology platform
that can support various high-level protocols and services
 23 / 28
https://www.dumpsinfo.com/
Answer: A
131. Which of the following descriptions about the DM12 board is correct? (Multiple choice)
A. One DX1 board can be paired with two DM12 boards
B. Access NX6bit/s conference and sub-rate service signals through the DB28 connector on the
DM12 board
C. Realize electrical signal input and output interfaces of DDN, Unframed E1 and sub-rate services
D. Access the G.703 64kbit/s co-directional service signal through the DB44 interface on the DM12
board
Answer: ABD
132. When a signal with a standard Ethernet frame length of 64Bytes is connected to the Ethernet
board, if the QinQ function is enabled, what is the actual frame length of the signal inside the board ()
Bytes?
A.64
B.84
C.68
D.80
Answer: C
133. The transmission plane mainly completes functions such as optical signal transmission,
multiplexing, configuration protection switching, and switching and connection. And ensure the
reliability of the optical signal transmitted. However, the exchange action at this layer is carried out
under the action of the management plane and the control plane.
A. True
B. False
Answer: A
134. The ODUk SNCP protection cannot be switched automatically. Which of the following options is
the possible reason? (Multiple choice)
A. A lockout or forced switchover command is set
B. SNCP type setting error
C. Electrical cross configuration error
D. Waiting for recovery time is set too long
Answer: ABCD
135. When the LCK is inserted at the Pl overhead of the ODUk at the local end, how will the
downstream station handle it? (Multiple choice)
A. Continue to transparently transmit the ODUk_PM_LCK alarm to the downstream site
B. Report ODUk_PL_LCK
C. Insert ODUk_PM_BDI back to the upstream site
D. Insert ODUk_PI_LCK back to the upstream station
Answer: ABD
136. WDM system fault location follows the principle of first locating the outside, then the inside; first
locating the network, then locating the network element; first (), then unidirectional;
 24 / 28
https://www.dumpsinfo.com/
Answer: Two-way | low-level
137.100mw is approximately equal to how many dBm?
A. 10dBm
B. 15dBm
C. 20dBm
D. 13dBm
Answer: C
138. In the case of 1+1 linear MSP, which of the following switching modes does not need to enable
the APS protection protocol? (Multiple choice)
A. Single-ended reply mode
B. Single-ended non-reply mode
C. Double-ended reply mode
D. Double-ended non-reply mode
Answer: AB
139. Which of the following light sources has the best dispersion tolerance and stability?
A. Directly modulated light source
B. EA modulated light source
C. Mach-Zehnder modulated light source
D. None of the above
Answer: C
140. There are many types of optical wavelength division multiplexers. Which of the following are the
types of optical wavelength division multiplexers? (Multiple choice)
A. Interference filter type
B. Grating type
C. Filter type
D. Arrayed waveguide booklet
Answer: ABD
141. In Tunnel APS protection, which item belongs to the external switching condition? (Multiple
choice)
A. Clear switching
B. SF switching
C. Lock protection channel
D. Practice switching
Answer: ACD
142. When congestion occurs, queuing strategies can be varied. If you need to get services for the
first arriving packets, you can use the () queuing strategy; if you want to ensure that the most urgent
and critical business is served first, you can use the () queuing strategy: if you need to balance the
delay and delay jitter of each flow, you can choose () queuing strategy; if you want to provide
professional bandwidth for specific services, you can choose () queuing strategy.
A. FIFO, PQ, WFQ, CQ
 25 / 28
https://www.dumpsinfo.com/
B. F1FO, CQ, PQ, WFQ
C. WFQ, PQ, CQ, FIFO
D. PQ, FIFO, WFQ, CQ
Answer: A
143. If there is only a single channel interval, automatically plan the allocation from short wavelength
to long wavelength according to the default channel.
A. True
B. False
Answer: B
144. The virtual concatenation group at one end of the two ends of the device has enabled LCAS, but
the opposite end has not enabled LCAS. The local end reports an LCAS FOPR alarm.
A. True
B. False
Answer: A
145. Which of the following alarms can trigger the automatic switching of optical line protection?
(Multiple choice)
A. POWER_DIFF_OVER
B. R_LOS
C. MUT_LOS
D. IN_PWR_LOW
Answer: AC
146. Two sockets are called paired if the overhead bytes pass through the backplane bus between
the two sockets. Paired broadcast slots realize automatic transparent transmission of overhead bytes,
such as adding () and () to improve MSP switching performance even if the SCC board on the local
element is offline. Protect the DCC communication with its network element. (Multiple choice)
A. K bytes
B. D byte
C. E1 byte
D. B1 byte
Answer: ABC
147. The ODUk serial monitoring overhead supports multiple maintenance signals. When the
ODUk_TCM_LCK maintenance signal is generated, which of the following is detected by STAT?
A.101
B. 010
C.111
D.110
Answer: A
148. Which of the following is the difference between AU pointer and TU pointer? (Multiple choice)
A. Indication range
B. The number of bits occupied by the pointer value
 26 / 28
https://www.dumpsinfo.com/
C. Bytes that store pointer values
D. Unit of adjustment
Answer: ACD
149. When the main control board is single-configured, which step is required to replace the single
board compared to when the main control board is dual-configured?
A. Download the original configuration data
B. Make sure that the host software version is consistent before and after the replacement, if not,
please upgrade and replace the single board software first.
C. Consistency check of network management and network element data.
D. Query the alarms of the board and confirm that the original alarms have been cleared.
Answer: A
150. MPLS technology can be nested in multiple layers. There is no limit. It is only limited by (). It has
good scalability.
Which of the following is correct?
A. VLANs
B. Ethernet packet length
C. The processing power of the equipment
D. Latency issues
Answer: B
151. Which of the following maintenance signals are contained in the STAT bits of PM and TCM in
the maintenance signals at the ODUk level? (Multiple choice)
A. AAIS
B. OCI
C. LCK
D. IAE
Answer: ABC
152. Which of the following descriptions about the PWE3 network reference model is wrong?
A. PE is located at the edge of the operator's network and is a device that provides PWE3 to CE
B. CE cannot perceive whether the simulated service or the local service is being used
C. PES establishes a point-to-point channel, the channels are isolated from each other, and the
user=layer messages are transparently transmitted between them.
D. Tunnel is a mechanism fortransparently carrying information on the network. It is used to carry P7.
A tunnel can only support one PW
Answer: D
153. There are two transmission modes in the WDM system, respectively () is and ()
Answer: Single fiber unidirectional | Single fiber bidirectional
154.MPLS adopts a double-plane structure, which is divided into () and ()
Answer: Control plane | Forwarding plane
 27 / 28
https://www.dumpsinfo.com/
155. Which of the following options is the low-loss area of single-mode fiber? (Multiple choice)
A. 1310nm
B. 900nm
C.1550nm
D.1200nm
Answer: AC
156. The control link and the control channel have different functions and are independent of each
other. The control link is flooded to the whole network by the OSPF protocol, and each intelligent
network element saves the control link information of the whole network. The control channel will not
flood the entire network, and each intelligent network element only manages and saves its own
control channel.
A. True
B. False
Answer: B
Both the 831.SC2 and ST2 boards support the processing and transparent transmission of 1588V2
signals.
A. True
B. False
Answer: B
157. The segment overhead of STM-4 is () bytes/frame.
A. 9*9*4
B. 9*8*4
C. 9*9*8
D. 9*8
Answer: B
158. The user-oriented interface and transmission network-oriented interface of the E-Line service
are?
A. UNI, UNI
B. UNI, NNI
C. NNI, UNI
D. NNI, NNI
Answer: B
Powered by TCPDF (www.tcpdf.org)
 28 / 28
https://www.dumpsinfo.com/
http://www.tcpdf.org