Which of the following statements about PDSCH DMR5 is incorrect?

• A.The front-loaded DMRS is mandatory, and the additional DMRS is optional.
• B.The start symbol of a front-loaded DMRS of a type B PDSCH is always the first symbol of PDSCH.
• C.The start symbol of a front-loaded DMRS of a type A PDSCH can be symbol 2.
• D.The overhead of type 1 DMRS is less than that of type 2 DMRS.

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The segmentation method is the most important method for isolating faults on the transport network. Different methods are used for different fault types.

• A.True
• B.False

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Which of the following actions will trigger SgNB release by the MeNB?

• A.An inter-SgNB cell change occurs.
• B.The MeNB detects that the X2 link is abnormal.
• C.The air interface link on the NR side is abnormal, and a UE reports SCG Failure Info to the eNodeB.
• D.The UE inactivity timer on the NR side expires.

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What is the typical output power of a 64T64R AAU?

• A.80W
• B.40W
• C.200W
• D.20W

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Which of the following 5G technologies can be used to ensure the QoS and security of smart grid services?

• A.5G super uplink
• B.5G carrier aggregation
• C.5G DNN private line
• D.5G E2E slicing

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