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السؤال #1
Which of the following statements about the position of the dispersion module in the signal flow is wrong?
A. If there is an OAU board, the DCM is placed between the TDC/RDC of the OAU
B. If there is only one OBU board, the DCM is placed after the OBUcorrect
C. If there are two OBU boards, the DCM is placed between the two OBUs
D. OTM station usually pre-fills 20KM DCM before sending OBU
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اجابة صحيحة: B
السؤال #2
which of the following with the docking workflow between U2000 CORBA and OSS is wrong?
A. Start the name serviceStart the notification serviceStart U2000 CORBA
B. CORBA registers with the notification serviceCORBA creates a channel into the name servicecorrect
C. OSS connects to name service through CORBA clientThe CORBA client of OSS finds the event channel through the name service
D. OSS accesses CORBA agent through CORBA clientCORBA agent reports messages to OSS through the event channel
عرض الإجابة
اجابة صحيحة: B
السؤال #3
In the Linux system, configure an IP address 129.9.1.100 for the network card Eth0. Which of the following command is used?
A. ifconfig eth0 129
B. ipconfig 129
C. ipconfig eth0 129
D. ifconfig 129
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اجابة صحيحة: A
السؤال #4
Which of the following information should be paid attention to when enabling GE services on a TOA board? (Multiple choice)
A. MTU valuecorrect
B. Ethernet working modecorrect
C. Docking module typecorrect
D. Ethernet VLAN information
عرض الإجابة
اجابة صحيحة: ABC
السؤال #5
In general, which PHB is used for signaling?
A. CS7, CS6correct
B. EF
C. BE
D. AF1, AF2, AF3, AF4
عرض الإجابة
اجابة صحيحة: A
السؤال #6
All operations on site can be operated according to one's own experience, and there is no need to strictly follow the changing operation steps
A. TRUE
B. FALSEcorrect
عرض الإجابة
اجابة صحيحة: B
السؤال #7
When using a dual slot line group MSP ring, in which of the following cases is the multiplex section overhead K bytes in the pass-through state?
A. Cross-connect board abnormality
B. Main control board abnormality
C. The main control board is not in placecorrect
D. When the multiplex section protocol controller state is pass-through
عرض الإجابة
اجابة صحيحة: C
السؤال #8
In the 40-wavelength system of the WDM equipment, due to the aging of the optical cable of the customer, the optical cable between the 2# and 3# sites need to be replaced, and the 4# optical amplifier site needs to be added between 2# and 3#. Which of the following statements is correct?
A. The optical power of site 2# does not need to be commissioned again
B. The optical power of site 3# does not need to be commissioned again
C. Need to consider whether the dispersion budget is sufficientcorrect
D. There is no need to consider whether the dispersion budget is sufficient
عرض الإجابة
اجابة صحيحة: C
السؤال #9
The function of PW OAM is basically the same as that of Tunnel. The PW OAM mechanism can effectively detect, confirm and locate defects and faults originating from the PW layer network. Which of the following functions are not available in PW OAM?
A. LB
B. Pingcorrect
C. BDI
D. FDI
عرض الإجابة
اجابة صحيحة: B
السؤال #10
A network is configured with an optical line protection group. The initial difference between the primary and standby input optical signals is 2db, and the primary and standby input optical difference switching threshold is 5db. Which of the following situations will trigger switching?
A. Main channel optical power minus standby channel optical power = 4db
B. Main channel optical power minus standby channel optical power = -4dbcorrect
C. Main channel optical power minus standby channel optical power = -2db
D. Main channel optical power minus standby channel optical power = 2db
عرض الإجابة
اجابة صحيحة: B
السؤال #11
TOA board is a high-speed service tributary processing board. The following is the description of TOA (STND) board. Which one is wrong?
A. When the client-side service is STM-16, the port working mode is ODU1 non-aggregation mode, and there is no need to configure the board complete cross
B. When the client-side service is FE, the port working mode is ODU1 aggregation mode, and the board needs to be configured for complete cross
C. When the client-side service is GE, the port working mode is ODUO non-aggregation mode, and the board needs to be configured for complete crosscorrect
D. The maximum cross-connect capacity of a TOA board is 20Gbit/S
عرض الإجابة
اجابة صحيحة: C
السؤال #12
Optical wavelength sharing protection OWSP is used to configure the ring network of distributed services, and realize the protection of one route of distributed services between all sites by occupying two different wavelengths.
A. TRUEcorrect
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #13
The ETH_LOS or LINK_ERR alarm occurs on a single Ethernet port of a multi-interface Ethernet board, and the service is interrupted. The possible reasons are: the working mode of the Ethernet port does not match or the interface rate is inconsistent, and the hardware failure of the optical module. Which of the following is also possible?
A. Fiber connection errorcorrect
B. Ethernet port property setting error
C. The MTU parameter setting is too small
D. SDH line VC4 channel failure
عرض الإجابة
اجابة صحيحة: A
السؤال #14
The following are the time slot optimization steps (multiple choice)
A. Clean up discrete services before time slot optimization, delete junk services, and confirm with customers to complete or delete and reconstruct defective services
B. Analyze the resource evaluation report, focus on low-level crossover resources and line time slot utilization, focus on the location of bottlenecks, and confirm the principle of routing time slot optimization with customers
C. Generate the time slot optimization plan in AMS5000 according to the optimization principle, and write the implementation plan
D. Data collection and production optimization plan: Consistency verification of the customer's network management network element data, fiber and cable connection, and path data across the entire network: and process the deactivation business in the network, and confirm the one-way business in the network
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #15
A new TN55ND2 board was added to the OSN8800 device, and it was found that the board could not go online. Which of the following are impossibility reasons?
A. The main controller has SWDL_AUTOMATCH_INH alarm
B. The main controller has SWDL_PKG_ NOBDSOFT alarm
C. The main controller has SWDL_CHGMNG_NOMATCH alarm
D. The main controller has SWDL_BD_WEAKMATCH alarmcorrect
عرض الإجابة
اجابة صحيحة: D
السؤال #16
The sequence of downlink signals, which of the flowing through the functional blocks of the SL16 circuit board?
A. SPI, RST, MST, MSP, MSA, HPTcorrect
B. HPT, MSA, MSP, MST, RST, SPI
C. SPI, MST, RST, MSP, MSA, HPT
D. HPT, MSP, MSA, MST, RST, SPI
عرض الإجابة
اجابة صحيحة: A
السؤال #17
Regarding the test items of IEEE 1588V2 time protection function, which statement is wrong?
A. On the OptiX OSN 8800, the active and standby states of the clock board and the cross-connect board are related to each other
B. On the OptiX OSN 6800, the active and standby states of the clock board and the cross-connect board are related to each other
C. Test the long-term stability of the time performance in PTP synchronous mode, and the output time performance should be within ±1us
D. For the long-term jitter test in the physical layer synchronization mode, use a time analyzer with a GPS receiver to observe at the end node for more than 8 hours, and the test output time performance should be within ±1us
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اجابة صحيحة: B
السؤال #18
The SYNLOCK V3 device can achieve different clock accuracy levels through different board configurations. Which of the following can be realized by SYNLOCK V3? (Multiple choice)
A. SECcorrect
B. LPRcorrect
C. TNCcorrect
D. LNCcorrect
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #19
Which of the following features can adjust bandwidth on demand when Ethernet networking is used, dynamically increase and decrease members in VCTRUNK without affecting services? When a virtual cascade group member fails, the bandwidth can be quickly adjusted to ensure normal data transmission; when the failed member recovers, the original bandwidth of the virtual cascade group is automatically restored.
A. LCAScorrect
B. LAG
C. DLAG
D. QoS
عرض الإجابة
اجابة صحيحة: A
السؤال #20
Which of the following descriptions of 100G system protection configuration is correct?
A. When using OLP or DCP with an LSC board to achieve 1+1 protection within the board, the switching mode can be set to single-ended switching or double-ended switching
B. When the scheduling granularity of the NS4 board is ODUflex, it can support ODUk ring network protection
C. 40G/100G coherent 1+1 protection compared to 40G eDQPSK, the protection channel does not need additional TDC boardcorrect
D. The TTX board can support tributary SNCP protection only when the client side accesses 10GE LAN services
عرض الإجابة
اجابة صحيحة: C
السؤال #21
There are two types of E1 signals: Unframed E1 and Framed E1. Unframed E1 refers to transmitting user data in all time slots as a whole.
A. TRUEcorrect
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #22
When congestion occurs, there are many different queuing strategies. If you need to serve the first-arriving packets first, you can use the () queuing strategy; if you want to ensure that the most urgent and critical services are served first, you can use the () queuing strategy; if you need to balance the delay and delay jitter of each flow, you can use the () queuing strategy; if you want to provide dedicated bandwidth for specific services , you can use the () queuing strategy.
A. FIFO, PQ, WFQ, CQcorrect
B. FIFO, CQ, PQ, WFQ
C. WFQ, PQ, CQ, FIFO
D. PQ, FIFO, WFQ, CQ
عرض الإجابة
اجابة صحيحة: A
السؤال #23
The LPT (Link Pass Through) function is applied to the scenario where WDM equipment accesses FE/GE/10GE LAN services. Which statement about LPT is correct? (Multiple choice)
A. It makes the user equipment perceive the link status information by turning off and on the laser of the WDM device, thereby triggering the user equipment to enable the service protection function and select the active or standby link for communicationcorrect
B. From the perspective of the network, ALS has similar functions to LPT (Link Pass Through), and the differences are mainly reflected in applicable services, fault transmission methods, and laser restart mechanisms
C. The LPT function can be divided into port-based LPT and service-based LPT in terms of implementation methods
D. By adding overhead bytes supporting the LPT protocol to the signal frame format on the WDM side, the running status of the network access point or service network can be monitored
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #24
1NE1 is interconnected with NE2. NE1 uses OptiX SDH equipment and uses a VC4:1:2 timeslot. If the service can be opened normally, what is the VC12 timeslot number that the other end needs to use when using equipment from other manufacturers?
A. 2-1-1correct
B. 1_2_1
C. 1_1_2
D. 2_2_1
عرض الإجابة
اجابة صحيحة: A
السؤال #25
In general, which PHB is marked by signaling?
A. CS7, CS6correct
B. EF
C. BE
D. AF1, AF2, AF3, AF4
عرض الإجابة
اجابة صحيحة: A
السؤال #26
During the network acceptance test, it is found that the OSN 3500 can work normally when the external clock source is connected, and enters the hold state when the external clock source is disconnected, but the hold state cannot last for 24 hours. Which of the following are possible reasons?
A. The time to connect to an external high-precision clock source is too shortcorrect
B. Clock SSM function is not enabled
C. Wrong clock level setting
D. The clock crystal oscillator fails, and the board needs to be replaced
عرض الإجابة
اجابة صحيحة: A
السؤال #27
Share the business of VCTRUNK. To achieve business isolation, what isolation methods can we adopt? (Multiple choice)
A. MAC addresscorrect
B. VLAN IDcorrect
C. MPLS Label Switchingcorrect
D. QINQ VLAN nestingcorrect
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #28
Which of the following is not included in the performance evaluation of WDM network?
A. Single-wavelength optical power & flatness
B. OSNR
C. Combined optical power
D. Monitoring signal optical powercorrect
E. Dispersion & FEC BER
عرض الإجابة
اجابة صحيحة: D
السؤال #29
If a ROADM site adopts WSS+RMU configuration, which of the following impacts on SOM is wrong?
A. If RMU is used locally to add wavelengths and has optical amplifiers, the OSNR value of the wavelength in the through direction detected by the SOM will deviate from the actual valuecorrect
B. There is an optical amplifier but no filter locally
C. The source and sink optical amplifiers of the optical cross-connect at this site must be in the same network element
عرض الإجابة
اجابة صحيحة: A
السؤال #30
Regarding the electrical layer protection ODUk SNCP and branch SNCP, which item is different from the following description?
A. Cross grain
B. Scope of protectioncorrect
C. Protected Subtypes
D. Working principle
عرض الإجابة
اجابة صحيحة: B

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