Huawei H35-211_V2.5 問題練習

Question No : 1
The downlink wavelength in the 10G GPON system is?

• A.1310nm
• B.1490nm
• C.1270nm
• D.1577nm

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Question No : 2
The traffic suppression function can work on unicast packets and multicast packets, but since broadcast packets are generally sent by equipment at the initial stage of communication, in order not to affect specific communication services, access network equipment does not provide support for broadcast Traffic suppression.

• A.True
• B.False

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Question No : 3
According to the status of the tokens in the token bucket, the device marks the packets with colors (green, yellow, red). The colors of the marks are mainly to provide the basis for packet processing for subsequent congestion control.

• A.True
• B.False

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Question No : 4
Link aggregation LACP only supports the aggregation mode of load sharing.

• A.True
• B.False

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Question No : 5
The data multiplexing method of 10G GPON is similar to that of GPON, and the uplink still adopts TDMA technology.

• A.True
• B.False

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Question No : 6
1000 broadband users need to occupy a bandwidth of 100M when the concurrent rate is 30%, the penetration rate is 50%, the online bandwidth is 10M, the duty cycle is 15%, the number of channels is 1, and the coverage rate is 70%.

• A.True
• B.False

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Question No : 7
The OLT has a powerful rogue ONU control function, and can detect and isolate rogue ONUs in any scenario.

• A.True
• B.False

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Question No : 8
When the FTTH user has the fault phenomenon of "off-hook and no power", the possible reasons are? (Multiple choice)

• A.Phone failure
• B.POTS port failure
• C.OLT failure
• D.The line between the ONU and the phone is faulty

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Question No : 9
If the ONU cannot be found automatically, the possible cause of the failure is? (Multiple choice)

• A.The actual distance from the ONU to the OLT is outside the ranging compensation distance configured by the OL
• B.The PON port is faulty.
• C.The ONU is not powered on.
• D.There are rogue ONUs that interfere with other ONU and cannot work normally.

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Question No : 10
The uplink rates of 10G EPON are? (Multiple choice)

• A.1.25Gbps
• B.2.5Gbps
• C.5Gbps
• D.10Gbps

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Question No : 11
With the development of business, the demand for bandwidth is getting higher and higher, and 10G PON technology can better adapt to the needs of the network. Which of the following description of 10G PON is correct? (Multiple choice)

• A.The frame structure of 10G GPON still uses GEM frames in order to be compatible with GPO
• B.Although the upstream wavelength range of 10G GPON coincides with GPON, it does not affect the coexistence of the two.
• C.Compared with GPON, 10G GPON has a larger splitting ratio, which can better save ODN investment.
• D.10G GPON provides larger bandwidth and more sufficient optical power budget.

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Question No : 12
In the GPON system, Huawei recommends not to use level-2 or higher splitting. Which of the following networking are wrong? (Multiple choice)

• A.The first-level spectroscopic 1:32, the second-level spectroscopic 1:16
• B.Primary splitting 1:2, secondary splitting 1:8
• C.First-level splitting 1:8, second-level splitting 1:64
• D.First-level splitting 1:2, second-level splitting 1:16

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Question No : 13
The system of IEEE 802.1X protocol includes: (Multiple choice)

• A.Supplicant System (client)
• B.Authenticator System (authentication system)
• C.Account system (billing system)
• D.authentication server system (authentication server)

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Question No : 14
Regarding the Gem port design principles, which of the following statements is incorrect?

• A.Gem ports need to be planned under the same PON port, and Gem port IDs between PON ports can be repeated.
• B.In FTTH mode, each user (ONU) is allocated a Gem port for each service flow.
• C.In FTTB mode, for ordinary users, it is recommended to allocate Gem ports on each ONU according to the outer VLAN of the service flow, and each Gem port corresponds to a maximum of 1024 VLANs.
• D.In FT TB mode, for important broadband leased line users, it is recommended that each broadband leased line user corresponds to a Gem port.

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Question No : 15
When OLT traffic scheduling, which of the following traffic will be marked in green?

• A.Traffic below CIR
• B.Traffic above CIR but below PIR
• C.Flow above PIR
• D.Higher traffic than CBS

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