(single) Is the following description correct? The minimum activation rate (Minimum transmission rate) in the ADSL/ADSL2+ parameter indicates the minimum activation rate that must be reached in this direction after the line is activated. If the setting is too large, the modem may not be activated normally.
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A
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B
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(single) What type of access interface does the ONU have to provide when carrying a TDM signal in a GPON system?
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A
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B
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C
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D
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(single) What does the list that the ToolBox tool can track does not include?
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A
V5 Layer 2 message tracking
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B
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C
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D
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(single) Huawei MXU devices can support three power supply modes. Which of the following power supply modes is not supported?
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A
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B
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C
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D
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(single) How many multicast IP addresses can a multicast MAC address correspond to in Layer 2 multicast?
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A
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B
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C
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D
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Question 6
Multiple choice
(multiple) Data configuration on the OLT. When adding a Gemport, you usually choose the type of service carried by Gemport. Which of the following business types does gemport support?
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A
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B
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C
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D
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(Radio) The downstream effective bandwidth of the GPON PON port is
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A
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B
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C
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D
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(single) OLT usually uses the technology of queue scheduling to solve the problem of traffic congestion. How many queues does the MA5600T/MA5680T have?
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A
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B
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C
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D
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(single) Is the following description correct? The MA5600T/MA5680T can perform ONT PPPoE simulation test operations when the ONT is offline.
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A
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B
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Question 10
Single choice
OLT can perform traffic shaping through service-port.
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A
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B
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Question 11
Multiple choice
(multiple) Use the display ont potsport state command to query the status of the POTS port of the ONT. You can query the following status of the NOT voice port:
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A
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B
Management status (lock, Unlock)
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C
Pick up state, current session state
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D
Business operation status
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Correct answersA, B, C, D
Question 12
Single choice
(single) PITP application when OLT+MDU networking, which of the following statements is incorrect?
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A
When PITP is enabled only on the OLT, only the PON port information of the OLT can be taken.
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B
When PITP is enabled only on the MDU, only the user port information of the MDU can be taken.
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C
If PITP is enabled on both the OLT and the MDU, the PON information and the port information of the MDU are simultaneously marked.
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D
If PITP is enabled on both the OLT and the MDU, you need to pass a switch on the OLT (pitp permit-forwarding service-port X). When the switch is enabled, the OLT PON port information is carried.
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Question 13
Single choice
(single) When configuring multicast services on the MA5600T/MA5680T, the multicast VLAN program is statically configured. Which of the following options must be configured, otherwise the multicast program may not be viewable?
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A
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B
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C
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D
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Question 14
Single choice
(single) Is the following description correct? In order to avoid data conflicts and improve network utilization efficiency, the GPON network adopts TDMA multiple access mode in the downlink direction and arbitrates data transmission of each OUN.
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A
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B
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Question 15
Multiple choice
In the multiple) GPON network, which of the following reasons may cause the ONT to not be automatically discovered?
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A
The optical power received by the ONT is greater than the overload optical power.
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B
The optical power received by the ONT is less than the sensitivity value.
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C
The ONT auto-discovery function of the GPON port is not enabled.
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D
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Question 16
Multiple choice
(multiple) Which of the following descriptions are correct when performing an optical interface average transmit optical power test?
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A
The optical connectors on the fiber connector and the optical interface board are clean and well connected.
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B
Optical power meter is calibrated
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C
Connect one end of the test tail of the optical power meter to the "Rx" port of the optical interface board and connect the other end of the pigtail to the optical power meter.
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D
Repeat several times to check whether the measured maximum value and minimum value of the transmitted optical power meet the technical requirements.
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Question 17
Single choice
(single) Is the following description correct? The DBA scheduling of the GPON network is only for uplink traffic, and the downlink traffic cannot be scheduled.
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A
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B
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Question 18
Single choice
(Radio) The following options, regarding the description of the H.248 connection model, are correct?
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A
The connection model cannot be modified during a user session
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B
When the session between the two users ends, the corresponding association is used
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C
A media gateway that supports only point-to-point connections can allow three or more endpoints to exist in the --association at the same time
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D
When the user call is successful, the empty connection starts to be created
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Question 19
Multiple choice
When performing maintenance on the MA5600T system, what can I view by using the display version command?
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A
System version information
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B
Version information of each service board
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C
Version information of the main control board
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D
Version information of the chassis
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Question 20
Multiple choice
(multiple) Single or multiple ONUs under the PON port cannot be automatically discovered. What are the possible causes of the fault?
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A
The fiber line is faulty or the connection is not standardized, and the optical path attenuation is too large or too small.
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B
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C
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D
The nearest longest distance configured on the OLT is not suitable
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Question 21
Single choice
(single) Which of the following is the transport layer protocol used by SIP messages?
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A
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B
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C
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D
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Question 22
Single choice
(single) Which of the following is the command to check whether the running status of all boards in the MA5600T/MA5600T 0 is normal?
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A
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B
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C
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D
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Question 23
Single choice
(single) What is the difference between alarm masking and alarm suppression?
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A
When the alarm masking function is configured, the NE will still report the alarm, but the network management system will not receive the alarm. When the alarm suppression is set, the NE will not report the alarm.
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B
When the alarm masking function is set, the NE does not report the alarm. When the alarm suppression is set, the NE still reports the alarm, but the network management system does not receive the alarm.
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C
When the alarm mask function is set, the network element does any processing.
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D
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Question 24
Single choice
In the evolution of EPON to 10 G EPON, a smooth transition is achieved at the local level by adding WDM WDM modules, and ODNs coexist
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A
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B
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Question 25
Multiple choice
When configuring IPTV services on the U2000, what templates are included in the IGMP templates?
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A
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B
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C
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D
Preview the parameter template
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Question 26
Single choice
(single) Regarding multicast, which of the following is incorrect?
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A
The report sent by the user is captured on the board logic and sent to the board CPU.
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B
It is valid for all multicast VLANs based on the common parameters of the Layer 2 multicast protocol (IGMP Proxy, IGMP Snooping).
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C
When igmp match mode is disabled, you need to configure the multicast program group.
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D
Add igmp user under BTV. By default, a multicast user can watch 8 programs.
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Question 27
Single choice
(single) Is the following description correct? The MA5616 and MA5610 can be used in addition to the main control board.
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A
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B
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Question 28
Single choice
Is the description under (single) correct? The GPON system inherits the TDM signal. The essence of the TDM signal is to encapsulate the TDM into a GEM frame on the ONU. The GEM frame is decapsulated into a TDM signal on the OLT, and then transmitted to the device capable of transmitting the TDM signal.
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A
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B
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Question 29
Single choice
(single) Which of the following queue scheduling techniques does the MA5600T/MA5680T support?
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A
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B
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C
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D
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Question 30
Single choice
(single) In the 802.1Q tag header, how many VLANs is the VLAN ID, how many VLANs can be specified?
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A
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B
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C
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D
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Question 31
Single choice
(single) Is the following description correct? When negotiating the project acceptance test project with the customer, it is recommended to submit the product related product acceptance manual directly to the customer, and let the customer choose the test project.
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A
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B
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Question 32
Single choice
(single) Is the following description correct? The DC upgrade tool requires the license. If there is no license, the default can be 30 concurrently. If there is a license, the maximum can be 60 concurrent.
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A
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B
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Question 33
Single choice
(single) Which of the following faults must capture media message information to analyze and locate?
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A
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B
No dial tone after off-hook
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C
The called party does not ring
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D
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Question 34
Single choice
(single) Which protocol is used to manage multicast group membership?
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A
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B
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C
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D
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Question 35
Multiple choice
(multiple) What are the port migration schemes in the access network?
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A
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B
Internal line multiplexing
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C
External three-way multiplex
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D
Device subscriber line switching
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Correct answersA, B, C, D
Question 36
Single choice
The (radio) 10G GPON system uses XGEN frames to encapsulate data, and the PORT ID is defined in the XGEN header as () bits.
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A
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B
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C
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D
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Question 37
Single choice
(single) In the FTTx service networking and data planning, user security should be considered. Which of the following measures can prevent user attacks?
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A
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B
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C
User Layer 2 isolation and controlled mutual visits
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D
Identify the user with port physical information
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Question 38
Single choice
(single) Which is the access network voice product in the NGN architecture?
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A
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B
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C
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D
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Question 39
Multiple choice
(Multi-select) VLAN planning principles need to be considered
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A
The total number of VLANs
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B
Customer type and number of users
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C
Type and type of business
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D
-
E
The networking topology of the OLT
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Correct answersA, B, C, D, E
Question 40
Multiple choice
(multiple) What are the levels of the U2000 alarm level?
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A
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B
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C
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D
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Question 41
Single choice
(single) In a GPON network, multiple traffic flows can be configured under one gemport. Which of the following statements is incorrect?
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A
According to the Ethertype service flow, a service flow with SPPPoE (EtherType = 8863/8864) and IPoE (EtherType !=8863/8364) can be configured under a gemport.
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B
Different services are classified by VLAN. In a gemport, eight different service flows can be configured according to the user vlan: according to the user vlan, it is divided into: untagged, uservlan, priority tagged, other-all.
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C
Different services are classified according to 802.1p. In a gemport, eight different service flows can be configured according to the vlan+ priority of the user.
-
D
Different services are classified by port. Different gemports can be configured with different service flows according to different user ports.
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Question 42
Single choice
The (radio) prerequisites for esight to automatically discover OLT and MXU devices by IP address are not included
-
A
Esight and the device need to be on the same network segment, otherwise the device cannot be discovered using the ARP broadcast protocol.
-
B
You already have the operation permission of "Resource Access".
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C
Esight and the device can be routed to communicate (ping each other).
-
D
The SMMP parameters on the esight side have been configured and are aligned with the device side SP parameters.
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Question 43
Multiple choice
(multiple) Which content may be included in the current access network MA5600T patch file?
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A
-
B
-
C
HPYxxx single board software package
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D
Main control board main package
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Question 44
Single choice
(Radio) In the FTTB/C scenario, ONU is used as an AG device to access the phone, and there is no possible cause of sound failure for SIP protocol off-hook
-
A
There are packet losses in the olt upper-layer network
-
B
The ONU side MG interface status is abnormal
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C
-
D
ONU and IMS routes are unreachable
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Question 45
Single choice
Single) Is the following description correct? In general, the higher the bit rate of the encoding, the higher the complexity of the algorithm, the longer the processing delay of the encoding, and the lower the speech quality.
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A
-
B
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Question 46
Single choice
(single) The IMGP version on the MA5680T is configured as V3. What happens when the MA5680T receives the IMGP leave message forwarded from the ONT?
-
A
Send a general group query message
-
B
Send a specific group query message
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C
-
D
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Question 47
Single choice
(single) The H.248 interface of the MA5620E is repeatedly interrupted. The narrow-band users in the field sometimes pick up the phone and have no voice, and the call will be disconnected during the call, which may be caused by the following reasons.
-
A
MA5620E active and standby MGC addresses are incorrectly configured.
-
B
ARP proxy configuration error causes users to fail to communicate
-
C
The number reported by the ONU does not match the number map sent by the softswitch.
-
D
The version of the H.248 protocol interaction is inconsistent
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Question 48
Single choice
(single) The MA5680T needs to classify traffic flows before performing traffic scheduling. Which of the following options is not available as a means of classifying the MA5680T?
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A
-
B
Tos field of IP account message
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C
-
D
EXP field of MPLS packets
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