EMT Practice Test

1. Question Content...

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Question1: Which of the following IP addresses are not part of the private IP address?

Question2: When the cross-board is configured with 1+1 hot backup, in the case of normal switching, the replacement of the cross-clock board does not affect the packet service.

Question3: OLA sites can also use ESC.

Question4: Which of the following statements about avoiding the generation of discrete trails are correct?

Question5: Which of the following versions of the GSCC board support CF cards?

Question6: If tunnel APS is configured for the tunnel to which the PW belongs, PW APS cannot be configured for the PW.

Question7: Which of the following meters/boards can be used to test the OSR metrics for 10G systems? (Multiple Choice)

Question8: Which of the following statement about the MPLS-TP OAM level is correct?

Question9: What are the prerequisites for creating a bidirectional MPLS tunnel? (Multiple Choice)

Question10: When you delete a discrete service, you can first activate it. At this time, you can view the alarm. If there is no alarm such as PS or TU-AIS, it is a garbage service. If there is an alarm, the analysis is incorrect. You need to activate it immediately.

Question11: When creating single station optical crossover, an error message "The direction of the cable is wrong selected" appears. The possible reason is?

Question12: Which of the following description of the ASON software structure is correct? (Multiple Choice)

Question13: After the signal of the standard Ethernet frame length of 64 Bytes is connected to the Ethernet board, if the QinQ function is enabled, what is the actual frame length of the signal inside the board?

Question14: The following description of 1+1 and 1:1 optical line protection, the fault is (). (Multiple Choice)

Question15: Which of the following description of the evolutionist in the mainstream SDN model in the industry is correct? (Multiple Choice)

Question16: The following description of the Directioned scenario, which is correct? (Multiple choice)

Question17: Which of the following is the incorrect description of the internal port properties of the Ethernet board?

Question18: Which of the following description is wrong about the content of the formula for calculating the maximum line rate (N=Ratc/((L+7+1+M)x8))?

Question19: Which of the following description of the Optix OSN 9800 sub-rack is correct? (Multiple choice)

Question20: An OTN network uses WSMD4 to form a ROADM network element. After the logical fiber is created, the paths that can be directly searched are: (Multiple choice)

Question21: Which of the following is not included in the OOS overhead?

Question22: The following description of the Directioned scenario, which is correct? (Multiple choice)

Question23: Loopback is a common operation for routine maintenance and troubleshooting. Which of the following statements about loopback operations are incorrect?

Question24: When the NNI port attribute is configured on the same subnet, the IP addresses of the ports on different links can be duplicated.

Question25: When the OSN 8800 needs to access GE signals, the boards that can be used are: (Multiple Choice)

Question26: Which layer of the TCP/IP protocol is the TCP/UDP protocol located?

Question27: In WDM systems, when using less than () wavelength, it is ideal to use dielectric thin film filter (TFF).

Question28: The following is the client-side logical port of the board in the standard mode.

Question29: For the SSM protocol, which of the following statements are correct? (Multiple choice)

Question30: The following description of the Flexible ROADM, which is wrong?

Question31: The OTS path refers to the physical fiber connection between two adjacent OM/OD/OA on the main optical path.

Question32: Which of the following description of the evolutionist in the mainstream SDN model in the industry is correct? (Multiple Choice)

Question33: Two PIU/APIU boards use the hot backup mode to supply power to the system on the OSN 1800 device, when a PIU/APIU board fails, the system can still work normally.

Question34: As with the STP device, the NG WDM device can practice the network element configuration on the network through pre-configured method.

Question35: The transmission plane mainly performs functions such as optical signal transmission, multiplexing, configuration protection switching, and reconnection, and ensures the reliability of the transmitted optical signal. However, the exchange action of this layer is carried out under the influence of the management dry surface and the control plane.

Question36: Which of the following description of discrete services is correct? (Multiple Choice)

Question37: The following protection methods belonging to NG WDM optical layer protection are: (Multiple Choice)

Question38: Which of the following trails can be configured on the NMS.

Question39: The main application scenarios for board compatible replacement are (). (Multiple Choice)

Question40: The following limitations of alarm and performance analysis methods are: (Multiple Choice)

Question41: The LOA board can implement the L2 scheduling function of the Ethernet in OSN 1800.

Question42: Which of the following protection schemes require the APS protocol?

Question43: The packet protection features supported by the OSN 1800V include _______. (Multiple choice)

Question44: The wave division system complement to chromatic dispersion mainly adopts the DCM compensation method. The following statements about DCM dispersion compensation, which is wrong?

Question45: In the scenario where the non-convergence OTU processes OTN standard signals, both A and B are WDM sites. After receiving the OTUk_TIM alarm on the client side, the OTU board at station A sends the OTUk_BDI alarm to the upstream. When the TIM follow-up action is disabled, the alarm is no longer transmitted to the downstream. When the TIM follow-up action is enabled, an SF event is generated. The WDM side of the OTU board at station B reports the ODUk_PM_AIS alarm, and the ODUk_PM_AIS alarm is transmitted downstream. The client equipment reports this alarm. After the WDM side of the OTU board at station B receives the OTUk_TIM alarm and the TIM follow-up action is disabled, the alarm is no longer transmitted to the downstream. When the TIM follow-up action is enabled, an SF event is generated. After the client side of station B processes the SF event, the client equipment reports the ODUk_PM_AIS alarm.

Question46: Which of the following versions of the GSCC board support CF cards?

Question47: After the PWE3 service is successfully deployed, what is the deployment status of the PWE3 service displayed?

Question48: Which of the following subracks does not support the configuration of packet board?

Question49: The transmission plane mainly performs functions such as optical signal transmission, configuration protection switching, and reconnection, and ensures the reliability of the transmitted optical signal. However, the switching action of the transport layer is performed under the influence of the management dry surface and the control plane.

Question50: The following description of the use of synchronous methods to create fiber optics, which is wrong?

Question51: If the LED indicator value on the SCC board of the OSN 8800 T32 board is 11, which of the following is the subrack ID?

Question52: Since the nonlinear effect is generated, its influence on the service signal cannot be repaired. Therefore, the treatment of the nonlinear effect of the existing network is to avoid the occurrence of nonlinear effects.

Question53: The overhead ratio is a factor that affects the error correction capability of the FEC technology. Generally, when the same FEC encoding/decoding algorithm is used, the higher the overhead ratio is, the larger the net coding gain is.

Question54: The user-oriented interface and the interface for the transport network of the E-Line service are
____ and _____.

Question55: Which layer of the TCP/IP protocol is the TCP/UDP protocol located?

Question56: When creating an OCh trail by using the board method, the source/sink ports select the corresponding line board and the IN/OUT port of the FIU board.

Question57: MPLS-TP is a subset of MIPLS that removes connectionless IP-based forwarding and adds end-to-end OA functionality.

Question58: The E-Line service types supported by the MS-OTN packet device are: (Multiple Choice)

Question59: Which of the following SOM systems is not monitored?

Question60: Which of the following is not a precaution after board replacement?

Question61: Which of the following is the data that needs to be collected and saved in the event of a failure? (Multiple Choice)

Question62: Which of the following statements about the line fiber quality monitoring performance parameters is wrong?

Question63: For the wavelength division system, configure the 1st-20th wave, use the NS4 single board, and test the M40 output port with the spectrum analyzer during the commissioning. It is found that the optical power of the 20th wave is significantly lower than the other 19 waves. The possible reasons are as follows: (Multiple Choice)

Question64: The packet protection features supported by the OSN 1800V include _______. (Multiple choice)

Question65: For emergency handling of business interruptions, fault location should be performed as soon as possible, and then the business should be resumed.

Question66: Which of the following application scenarios that belong to the change configuration method? (Multiple choice)

Question67: For the whole network error test in the commissioning test, which of the following statement is correct? (Multiple choice)

Question68: Which of the following is not included in an ASON network?

Question69: Which of the following protections need to use the APS protocol? (Multiple Choice)

Question70: In the scenario where the non-convergence OTU processes OTN standard signals, both A and B are WDM sites.The OTU at station A accesses four channels of R_LOS signals on the client side. After being processed in the middle part and on the WDM side of the OTU at station A, the alarm signals are then sent to station B.
The ODUk_PM_AIS alarm of the corresponding channel is generated in the middle part of station B.
The ODUk_PM_AIS alarm is detected in the client device.

Question71: In the WDM networking design, as long as there are enough EDFA cascades to compensate for the loss of optical power during transmission. Then the system can transmit a long distance without restriction.

Question72: MPLS APS is a network protection mechanism. It implements service switching by using the MPLS OAM detection function.

Question73: Which of the following are the components of general package format of PWE3? (Multiple Choice)

Question74: When the working channel protected by the optical line fails, it cannot be automatically switched to the protection channel. What are the possible reasons? (Multiple Choice)

Question75: In the sub-(wave) characterization test, what kind of standard does the isolation test require?

Question76: What common methods for MSTP device fault location can be summarized as?

Question77: In WDM transmission systems, the main factors affecting the unevenness of power balance of each channel which are not included? (Multiple choice)

Question78: MPLS APS is a network protection mechanism that implements service creation through the detection function of MPLS OAM.

Question79: Which of the following description of the principle of automatic protection switching of the standard SSM protocol are correct? (Multiple choice)

Question80: The following protection methods belonging to NG WDM optical layer protection are: (Multiple Choice)

Question81: Which of the following is a part of the optical layer in the OTN frame structure? (Multiple Choice)

Question82: The maximum optical power of light-emitting OBU output is 20dBm, which is used in the C-band 80 system. How much dBm should the single-wave standard output optical power be?

Question83: Optical monitoring channel is used for monitoring of WDM optical transmission system. In the UU-T proposal, it is preferable to use a wavelength of 1510 nm at how much rate?

Question84: The NG WDM two-dimensional ROADM site can use the WSMD9 single board, and its signal flow is an optical signal that is connected to the main optical channel from the "IN" optical port. The RDU (ROADM Demix Unit) optical module broadcasts 9 identical optical signals, which are output from the "DM1~DM8" and "ECPO" optical ports respectively. One of the signals is localized by the splitter board, and the other eight signals are dispatched to the other eight directions. Each wave of the main optical channel is connected from the "EXPI" optical port. The multiplexed or single-wave optical signal that needs to be inserted locally is input through the "AM1"~"AM8" optical port.

Question85: Which of the following unified circuit boards can support the intersection of VC, packet and ODUk? (Multiple choice)

Question86: The following basic principles for fault location in WDM systems are (). (Multiple Choice)

Question87: The basic principles of STP device fault location are? (Multiple choice)

Question88: Which of the following statements about Flexible ROADM is incorrect?

Question89: When you configure the Layer 2 attribute of the Ethernet, you need to set the Default VLAN ID and VLAN Priority of the untagged frame when the TAC ID is set to Access or Hybrid.

Question90: Which of the following alarms will trigger the optical line protection switching? (Multiple choice)

Question91: Which of the following description of the Optix OSN 9800 sub-rack is correct? (Multiple choice)

Question92: Which of the following ROADN nodes are configured correct? (Multiple choice)

Question93: Which of the following tools may Board replacement use? (Multiple choice)

Question94: ODUk SNCP protection cannot be automatically switched. The possible reasons are: (Multiple Choice)

Question95: The following basic principles for fault location in WDM systems are (). (Multiple Choice)

Question96: The network element automatically backs up the network element database to the FLASH database every 30 minutes by default.

Question97: Which of the following scenarios does the meter test apply to? (Multiple choice)

Question98: During the process of maintaining the OSN device, it is often seen that the fan runs at full speed, and the device reports the TEMP_OVER alarm. What are the common causes and treatment methods?

Question99: Which of the following description of the AU pointer are correct? (Multiple choice)

Question100: For emergency handling of business interruptions, fault location should be performed as soon as possible, and then the business should be resumed.

Question101: VPLS (Virtual Private LAN Service) is a Layer 2 VP technology that simulates a local area network.

Question102: Which of the following reasons may cause a business error? (Multiple choice)

Question103: The optical monitoring channel wavelength used by the ST2 board is: (Multiple choice)

Question104: Which of the following statements about replacing the SCC board is incorrect?

Question105: Which of the following is a good way to avoid creating discrete paths? (Multiple Choice)

Question106: Which of the following description of the single station commissioning is wrong?

Question107: An OTN network uses WSMD4 to form a ROADM network element. After the logical fiber is created, the paths that can be directly searched are: (Multiple choice)

Question108: For the wavelength division system, configure the 1st-20th wave, use the NS4 single board, and test the M40 output port with the spectrum analyzer during the commissioning. It is found that the optical power of the 20th wave is significantly lower than the other 19 waves. The possible reasons are as follows: (Multiple Choice)

Question109: Which of the following paths are not related to the business?

Question110: What are the common test indicators for Ethernet services? (Multiple Choice)

Question111: If no bit error test is performed on a optical channel for 10 minutes, the local end uses the SDH analyzer to connect to the client-side port on the OTU board, the client-side port on the opposite OTU board need to be self-looped by a fiber. In the case of self-loop, a fixed attenuator must be added.

Question112: For the nonlinear effect FWM, which of the following way is correct?

Question113: Which of the following is not included in the OOS overhead?

Question114: In the Colored&Directioned scenario of the 4D ROADM, if you want to implement local service scheduling in four directions, how many sets of M40V+D40 are needed?

Question115: During the configuration of the E-LAN, the "MAC Address Learning Mode" can be set to SVL and IVL. SVL is a stand-alone VLAN learning, and IVL is a shared VLAN learning.

Question116: A, C are the WDM OTM stations, and B is the relay station.
When the transmission direction of the A to B stations is interrupted, the Wavelength side of the B-stack OTU relay board reports the R_LOS emergency alarm and runs the processing to the upstream A.
The station side OTU2_BDI secondary alarm. At the same time, the alarm continues to be transmitted to the downstream station of the B station. After the alarm is processed at the C site, the ODU2_PM_AIS minor alarm is reported on the WDM side of the C-site OTU, and the ODU2_PM_BDI secondary alarm is transmitted back to the upstream station A.

Question117: Which of the following description of the DM12 board are correct? (Multiple choice)