EMT Practice Test

1. Question Content...

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Question1: When 10-minute error-free test is performed on a certain wavelength division channel, the local end uses the SDH analyzer to interconnect with the client-side interface of the OTU board. The peer OTU client-side interface needs to perform fiber self-loop. When you are self-looping, you must add solid decay.

Question2: Which of the following reasons does not cause optical power anomalies?

Question3: Which of the following IP addresses are not part of the private IP address?

Question4: For a 10G OTU board, the receiving end optical module uses PIN module. Which of the following receiving powers is in the normal receiving range of the board?

Question5: What are the classification of Ethernet performance tests? (Multiple choice)

Question6: The optical monitoring channel wavelength used by the ST2 board is: (Multiple choice)

Question7: Daily equipment maintenance items, excluding:

Question8: In WDM systems, when using less than () wavelength, it is ideal to use dielectric thin film filter (TFF).

Question9: When configuring the Ethernet Layer 2 attribute, set the Default VLAN ID and VLAN Priority of the untagged frame when the TAG ID is set to Accese or Hybrid. The "VLAN priority" is set according to the QoS of the unified plan.

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: 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.

Question12: When the OSN 8800 needs to access GE signals, the boards that can be used are: (Multiple Choice)

Question13: Before creating an optical cross-connection, you need to manually configure the corresponding port of the corresponding board as a boundary port, for example, the line-side port of the FIU board between two sites.

Question14: Which of the following methods does the networking and application of NG WDM include? (Multiple choice)

Question15: What common methods for MSTP device fault location can be summarized as?

Question16: When creating an electric layer path, one RX/TX port can only establish a connection with one optical channel of the clientLP port.

Question17: The length range of the DATA field in the Ethernet frame structure is ().

Question18: In general, which of the following operations will cause a short interruption in monitoring of existing network devices? (Multiple Choice)

Question19: TEM28 is the Ethernet convergence tributary board. Which of the following descriptions about the TEM28 board are correct? (Multiple Choice)

Question20: The following basic principles for fault location in WDM systems are (). (Multiple Choice)

Question21: Which of the following is the data that needs to be collected and saved in the event of a failure? (Multiple Choice)

Question22: Which of the following statement is correct?

Question23: The following limitations of alarm and performance analysis methods are: (Multiple Choice)

Question24: 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?

Question25: The following description of 1+1 and 1:1 optical line protection, the fault is (). (Multiple Choice)

Question26: In the ROADM, which of the following layer of OTN paths do not need to be manually configured, it can be obtained directly by path search? (Multiple Choice)

Question27: Which of the following meters/boards can be used to test the OSR metrics for 10G systems? (Multiple Choice)

Question28: Which of the following description of the process for optimizing the line attenuation compensation anomaly is correct? (Multiple choice)

Question29: Which of the following operating modes does the AT8 board support? (Multiple Choice)

Question30: Which of the following description of the performance parameters of line fiber quality monitoring is wrong?

Question31: The following description of the ASDN software structure, the correct ones are: (Multiple Choice)

Question32: When the working channel of the optical line protection fails, it cannot be automatically switched to the protection channel. What are the possible reasons? (Multiple choice)

Question33: ODUk SNCP protection cannot be automatically switched. The possible reasons are: (Multiple Choice)

Question34: When the input optical power of the amplifier at the receiving end OAU is lower than the nominal optical power, which of the following are wrong in the operation?

Question35: The OTN circuit board (such as ND2) of OSN 1800V can respond to the status of the indicator light on the panel to reflect the optical power of the local end too high or too low.

Question36: Before querying the error and optical power on the network management, you need to perform the () operation. Otherwise, you cannot query the corresponding teaching data.

Question37: The following is the client-side logical port of the board in the standard mode.

Question38: When using the OSN8800 T32, if you want to set the ID number of the master and slave sub-racks, which board should be set?

Question39: Generally, in the NG WD system, the full-wave fiber input power is generally less than 20dBm. What is the main reason?

Question40: The OSN 8800 device is protected by fan redundancy. When any fan in the fan box is broken, the system can still operate normally for a long time.

Question41: Which of the following description of the principle of automatic protection switching of the standard SSM protocol is correct? (Multiple Choice)

Question42: In the electrical layer overhead processing-sink function, the signal flow is from the OCh to the client direction, the PM ODUkP is detected first, and then the TCM ODUkT is detected.

Question43: Which of the following reasons may cause a business error? (Multiple choice)

Question44: The single-fiber bidirectional WDM system uses only one fiber to transmit optical signals in both directions simultaneously. The optical signals in both directions should be arranged at different wavelengths.

Question45: Which of the following options can reduce the effects of nonlinear effects in the WDM system? (Multiple Choice)

Question46: Which of the following paths are not related to the business?

Question47: The wave division system complement to chromatic dispersion mainly adopts the DCM compensation method. The following statements about DCM dispersion compensation, which is wrong?

Question48: Which of the following description of the DM12 board are correct? (Multiple choice)

Question49: The OCh path is created using the single station method. After the creation is completed, the 0ch path is not searched. Which are the possible reasons? (Multiple choice)

Question50: Which of the following description of ODUflex are correct? (Multiple choice)

Question51: The reasons for the discrete business are? (Multiple choice)

Question52: Since the EALC/ALC function is used in the SOM system, there is a possibility of business interruption during optical power adjustment.

Question53: What are the ways that NG WDM devices create fibers? (Multiple Choice)

Question54: MG-SDH digital single core can be expanded by software upgrade.

Question55: MPLS-TP is a subset of MIPLS that removes connectionless IP-based forwarding and adds end-to-end OA functionality.

Question56: The collection and storage of on-site data includes periodic collection during normal operation of the equipment and collection of equipment failures. Generally, before the fault is processed, the maintenance personnel must collect and save the field data.

Question57: The following description of discrete services, which are correct? (Multiple choice)

Question58: Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?

Question59: For the relay type OTU, the alarms of all SM segments are terminated at the local station and are not transmitted downstream (except for OTUkLOF to insert ODUk_PI_AIS downstream). Other alarms continue to be transmitted to the downstream station and reported on the WDM side of the OTU (except for R_LOS to insert ODUK_PM_AIS to the downstream site).

Question60: In 2.5G MSP ring composed of four MSTP sites, when protection switch occurs, which of the following statements about the alarm report are correct?

Question61: What does the component of the ASON network not include?

Question62: The following description of the cross-board of the OSN 8800 T64 subrack. Which is correct? (Multiple choice)

Question63: In WDM systems, when using less than () wavelength, it is ideal to use a dielectric thin film filter (TFF).

Question64: Which of the following features does the EX40 add than X40?

Question65: The lower the noise figure of the amplifier, the less noise is introduced by this amplifier.

Question66: Which of the following description of discrete services is correct? (Multiple Choice)

Question67: Which of the following ROADN nodes are configured correct? (Multiple choice)

Question68: FOADM includes parallel FOAD and serial FOADM, both supporting 40 waves or 80 waves of arbitrary wavelengths.

Question69: Which of the following ROADM boards have WSS optical modules? (Multiple Choice)

Question70: The following description of the PM_BIP8 related alarm, which is correct?

Question71: The OTS path refers to the physical fiber connection between two adjacent OM/OD/OA on the main optical path.

Question72: Which particles can be cross-scheduled for the cross-board of the OSN 8800 device? (Multiple choice)

Question73: The transmission windows of 1310 nm and 1550 nm are low loss windows. In DWDM systems, only the 1550nm transmission window is used. Which of the following is the main reason?

Question74: Which of the following description of the extended ECC is correct? (Multiple Choice)

Question75: If you want to establish a GE-level path on the NMS, which of the following steps are required? (Multiple choice)