Free Access Huawei.H35-210_V2.5.v2022-01-28.q110 Practice Test (Page 7)

Question 26

Regarding EPON, which of the following descriptions is incorrect?

A.The EPON standard is one of many TDM-PON standards and has the basic characteristics of a TDM-PON network: a tree topology network is composed of OLT, ONU and ODN (Optical Distribution Network).

B.In the upstream direction from the ONU to the OLT, each ONU uses the broadcast mode to share the upstream bandwidth.

C.The downstream data stream from the OLT to the ONU is encapsulated as an Ethernet message, and the corresponding LLID is attached and sent in the tree PON network. The optical splitter in the ODN broadcasts the data stream to each branch, and all ONUs can receive the downlink Ethernet data frame, and selectively receive their own data according to the LLID.

D.In the logical topology, the EPON protocol establishes a logical link for the OLT to each ONU, and the leading byte of the Ethernet data frame carries the logical link identity, that is, LLID (Logical Link Identity).

Question 27

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?

A.super vlan

B.mux vlan;

C.standard vlan;

D.smart vlan;

Question 28

Which of the following statements about ONT tcont is incorrect?

A.Uplink bandwidth is divided based on T-CONT, and different services use different T-CONTs

B.tcont 1 generally carries OMCI channels

C.One ONU/ONT can contain multiple T-CONTs

D.The GEM port is used as a service channel. A GEM port can carry one or more services in the flow

Question 29

Which of the following access technologies has the fastest speed?

A.ADSL

B.SHDSL

C.ADSL2+

D.VDSL2

Question 30

Is the following description correct? MA5612 supports RF (Radio Frequency) over PON service access.

A.False

B.True

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Question 26

Question 27

Question 28

Question 29

Question 30

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