When configuring the Ethernet Layer 2 attribute, set the Default VLAN ID and VLAN Priority of the untagged frame when the TAG ID is set to Accese or Hybrid. The "VLAN priority" is set according to the QoS of the unified plan.

• A.FALSE
• B.TRUE

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What common methods for MSTP device fault location can be summarized as?

• A.One loopbacks, two board change, three analysis.
• B.One analysis, two board change, three loopbacks.
• C.One analysis, two loopbacks, three board change.
• D.One board change, two loopbacks, three analysis.

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The following description of the signal flow of the OTM site (OSN 8800 device), which is wrong?

• A.Service transmission direction: SDH signals-> LSX-> M40V-> OBU1-> Line
• B.OSC receiving direction: Line-> FIU-> Sc2
• C.Service transmission direction: SDH signals-> LSX->M40V-> OBU1-> FIU-> Line
• D.Service receiving direction: Line->FIU-> OAU-> M40V-> LSX-> SDH signals

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The lower the noise figure of the amplifier, the less noise is introduced by this amplifier.

• A.FALSE
• B.TRUE

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For an MSTP device, the service layer path is a path existing on the network management side, and the client layer path is a path existing on the network element side.

• A.FALSE
• B.TRUE

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