EMT Practice Test

1. Question Content...

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Question1: Is the following description correct? Computer network cardMACaddress isIETFUniformly assigned to each manufacturer, the only one in the world.

Question2: Two-stage optical splitter is connected to the PON, the first-stage is 1:2, the second-stage optical splitter is 1:16, what is the total splitting ratio?

Question3: Is the following description correct? Users can establish PVC connections between different board ports or between different ports on the same board. The main purpose is to realize the point-to-point interconnection between two different users.

Question4: Is the following description correct? In the EPON network, in order to avoid data conflicts and improve network utilization efficiency, the downstream direction adopts TDMA multiple access mode and arbitrates the data transmission of each ONU.

Question5: In the EPON network, what are the management protocols running between the OLT and the ONT?

Question6: The Ethernet switch works inOSIWhich layer of the reference model?

Question7: Which of the following products does not belong to MDU?

Question8: Is the following description correct? In the routing table entries, for the same destination address and mask (Destination/Mask), can only correspond to the only next hop and outgoing interface(Nexthop/Interface).

Question9: Is the following description correct? The idea of the FTTx device offline deployment plan is to generate offline device configuration data through network planning dat a. After the device is installed and powered on, the configuration data is automatically issued to achieve the purpose of plug-and-play equipment.

Question10: In GPON network, which of the following reasons may cause ONU to fail to go online?

Question11: Is the following description correct? ADSL2+ is an extension of ADSL technology, supporting a downlink rate of up to 24Mbit/s and an uplink rate of 2.5Mbit/s, and the longest transmission distance can reach 6.5km.

Question12: If there are multiple set-top boxes under an ONT (for example: HG850) watching a multicast program at the same time, which of the following functions can be enabled on the OLT for the ONT multicast user to ensure that when one set-top box switches channels, other set-top boxes The programs you watch are not affected?

Question13: PVM packet voice processing board, which manages and controls the narrowband user board in the UA5000 chassis. What are its main functions?

Question14: Regarding super vlan, which of the following statements are correct?

Question15: When other SNMP parameters are configured correctly, how to configure the trap source address of the device to ensure that the network manager can receive device alarms normally?

Question16: MA5680T supports QinQ and VLAN stacking attributes. Which of the following VLANs supports QinQ attributes?

Question17: Is the following description correct? Can test engineers use SmartKit NSE2700 Inspector on site to improve the efficiency of ADSL port activation?

Question18: Which of the following is not an ONT product?

Question19: Is the following description correct? G.SHDSL broadband access technology is suitable for high-speed Internet access and video conferencing for users in hotels and Internet cafes, but it cannot provide dedicated line interconnection and dedicated line access.

Question20: Is the following description correct? The UA5000 and lanswitch are connected through GE, and the working mode of the ports on both sides can be auto-negotiation mode and mandatory mode.

Question21: What is not included in the uplink mode of MA5616?

Question22: What is the rated working voltage of the MA5600 equipment?

Question23: What is the difference between alarm shielding and alarm suppression?

Question24: Is the following description correct? MxU automatic upgrade strategy, that is, when the device is powered on, the current version of the device is automatically compared with the target version of the strategy. If it is inconsistent, the device software version is automatically upgraded to the target version.

Question25: When MA5600T is newly launched and connected to the network management system, which of the following descriptions are correct?

Question26: In the EPON network, what is the upstream and downstream bandwidth of the PON port?

Question27: Which one of the following descriptions of MA5616 is wrong?

Question28: What are the categories of acceptance test items in the MA5600T/MA5680T acceptance test manual?

Question29: What is the number of ADSL2+ subbands?

Question30: In the H.248 protocol, the terminal can be programmed to detect events. Once these events are detected, the MG will send a report to the MGC or the MG will take corresponding actions.

Question31: In Ethernet, what address is used to distinguish different devices?

Question32: The international professional organization responsible for allocating IP addresses has divided several network segments as private network segments, which can be freely distributed and used by people on private networks. Which of the following is not a network segment of private addresses?

Question33: MA5600T provides various networking protection functions. Which of the following protection features is usually used for upstream port protection?

Question34: In the H.248 protocol, how to apply for gateway registration?

Question35: What services does TCONT 0 generally run in ONT?

Question36: In the template mode of MA5680T, where is the configuration of tcont and gemport integrated?

Question37: According to the H.248 protocol, what is the type of terminal occupied when the telephone terminal is off-hook?

Question38: What is the attenuation of the 1:2 splitter?

Question39: When testing the average transmit optical power of an optical interface, which of the following descriptions are incorrect?

Question40: Is the following description correct? VDSL2 provides uplink and downlink symmetrical/asymmetrical transmission rates on a pair of twisted pairs. The transmission distance is about 3km. The maximum downlink rate is 52M (symmetrical rate) and the maximum uplink rate is 12M (asymmetrical rate).

Question41: Compared with the template mode, when the MA5600T configures FTTH services in a simplified manner, which of the following steps does not require configuration?

Question42: In the GPON system, what bandwidth types does type1 in the Tcont type include?

Question43: Is the following description correct? LANThe transmission form is generally bus-based, and the most commonly used corresponding protocols are carrier sensing and collision detectionCSMA/CDprotocol.

Question44: Which of the following are the most common services that belong to triple play access?

Question45: Which of the following descriptions about PPPoE is incorrect?

Question46: Which of the following information is the information that Solaris environment variables can provide?

Question47: Is the following description correct? When the ONT is offline, the MA5600T/MA5680T can perform ONT PPPoE simulation test operations.

Question48: In the UA5000 chassis with PVM as the main control board, which statement about the user board is correct?

Question49: When configuring traffic table for MA5680T, if only CIR is configured and PIR parameters are not specified, what is the PIR value by default?

Question50: Which of the following statements about ATM network VP and VC is correct?

Question51: Is the following description correct? VDSL2 provides uplink and downlink symmetrical/asymmetrical transmission rates on a pair of twisted pairs. The transmission distance is about 3km. The maximum downlink rate is 52M (symmetrical rate) and the maximum uplink rate is 12M (asymmetrical rate).

Question52: onIPWhich statement is correct in terms of routing?

Question53: Which of the following methods can be used for the reset test of the MA5600T/MA5680T single board?

Question54: Which is the correct order of the loss size of the optical fiber connection point?

Question55: According to the ITU-T G.984.x series of standards, what are the upstream and downstream bandwidths of GPON?

Question56: During the configuration of the EPON PPPoE service, what templates need to be configured to increase the MDU?

Question57: According to whether the UA2000 alarm is confirmed and cleared, what are its alarm states?

Question58: Is the following description correct? The simplified method of MA5600T/MA5680T GPON Internet service is optimized for the excessive number of templates and complicated configuration in the template mode, reducing user configuration workload and subsequent maintenance costs. The simplified mode currently only supports GPON FTTH scenarios. For newly-built GPON FTTH scenarios and scenarios that do not require high QoS, the simplified mode can be used for service configuration.

Question59: In the EMU command line mode, different environmental monitoring units use different command keywords for configuration. Which keyword is used by 4845/4875?

Question60: What message does the H.248 media gateway send to the MGC for registration?

Question61: When the MA5600 service box provides pure broadband service, how many slots can be inserted into the service board?

Question62: How many channels of ADSL2+&POTS access services are provided by the MA5600T ADSL2+&POTS integrated service board H80BCAME?

Question63: Is the following description correct? The access network upgrade loading file transfer can use FTP, TFTP, or SFTP, and FTP is recommended.

Question64: 10BASE-TRefers to which medium is defined?

Question65: Is the following description correct? ICMPIs a link layer protocol,ICMPThe message is triggered by the physical layer, and then byIPLayer or higher layer protocol to respond.

Question66: Which of the following statements about ONT tcont is incorrect?

Question67: When the UA5000 is configured with the H.248 protocol to connect to the softswitch, which of the following parameters must be consistent at both ends?

Question68: command... What is the correct description of the three points in ./.profile?

Question69: Is the following description correct? MA5680T supports template mode and discrete configuration mode to configure FTTH services. In template mode configuration, use the ont-profile add command to configure the ONT.

Question70: Which of the following commands is used to query whether all the boards in the MA5600T/MA5680T 0 frame are operating normally?

Question71: What is the next-generation development prospect of the access network?

Question72: What are the equipment maintenance methods currently not supported by MA5600T?

Question73: What is the correct correspondence between IP address and MAC address in a broadcast domain?

Question74: In the 802.1Q tag header, how many digits is the VLAN ID field, and how many VLANs can be specified in total?

Question75: When locating ADSL faults, what reasons may cause ADSL Modem to fail to activate?

Question76: Is the following description correct? The Triple play in MA5600T supports single-PVC triple play and multiple-PVC triple play for xDSL access.

Question77: In the MA5600 software system, which VLAN can only add Ethernet ports?

Question78: Is the following description correct? The single board program package file released by MA5680T contains all the supported single board software. In actual use, there is no need to use so much single board software. Therefore, you can open a small package through the unpacking tool to improve the upgrade efficiency.

Question79: In the EPON network, which parameter is used to filter the downstream data on the ONU?

Question80: Is the following description correct? The VDSL2 standard specifies a frequency band division of up to 30MHz, which can realize 100Mbit/s high-speed data transmission in a symmetrical uplink and downlink within a short distance.

Question81: Is the following description correct? The ADSL G.992.1 or G.dmt standard is a technical specification that does not require a signal splitter.

Question82: According to the IEEE 802.1Q standard, where is the VLAN identification field in the Ethernet frame?

Question83: At a certain UA5000 site, due to resource constraints, the entire frame of ADSL users need to pass a VLAN upstream to the IP network. At this time, why should the upstream VLAN in the IPM board be defined?

Question84: What is the index range of MA5600 extended access control list?

Question85: QA engineers start the SmartKit NSE2700 Quality Inspector tool, which of the following methods can be supported to connect devices?

Question86: 1518 byte Ethernet data message is converted into ATM cells for transmission through 1483 b format encapsulation, how many ATM cells will be converted into?

Question87: Which of the following descriptions about the MA5680T GPBD board is wrong?

Question88: Is the following description correct? In the GPON network, in order to avoid data conflicts and improve network utilization efficiency, the downstream direction adopts TDMA multiple access mode and arbitrates the data transmission of each ONU.

Question89: What are the incorrect statements about Type B protection for GPON networks?

Question90: Which of the following descriptions about DHCP is incorrect?

Question91: MA5600T checks whether the currently running single board software version meets the requirements for on-site deployment. Which command is used?

Question92: Is the following description correct? It is impossible for a route in the routing table to have a mask of0.0.0.0Routing items.

Question93: Which of the following products are not part of the ONU series?

Question94: Which of the following are not features of smart vlan?

Question95: Is the following description correct? In PON networks, multimode optical fibers are often used.

Question96: Regarding the MA5600T/MA5680T Ethernet access service board, which of the following statements is correct?

Question97: IPA part of the fields in the message are specifically used to describe the life cycle of the message, namelyTTLValue, what is its maximum value?

Question98: What are the characteristics of ATM cells?

Question99: Is the following description correct? TTLMainly to preventIPThe cyclic forwarding of packets in the network wastes network bandwidth.

Question100: Is the following description correct? In EPON, when the fiber length under the PON port is 10KM, the recommended splitting ratio is 1:32; when the fiber length is 20KM, the recommended splitting ratio is 1:16.

Question101: What is the maximum splitting ratio supported by the MA5680T GPBC board?

Question102: Regarding the ATM network, which one of the following descriptions is wrong?

Question103: Is the following description correct? Version rollback generally includes three steps: 1. Load the original version of the package file; 2. Load the original version database backed up before the upgrade; 3. Reset the system.

Question104: Is the following description correct? The MA5600T SCUN board provides 1 maintenance network port, 1 serial port, 1 environmental monitoring port, and 8 GE ports.

Question105: Which of the following isql login database commands is correct?