Regarding multicast, which of the following descriptions is incorrect?

• A.Add Lgmp user under BTV. By default, a multicast user can watch 8 programs.
• B.Based on the device's global configuration of the common parameters of the Layer 2 blocking protocol (IGMP Proxy, GMP Snoop), valid for all multicast VLAN
• C.The report sent by the user is captured on the board logic and sent to the board CPU C
• D.When igmp match mode disable, the multicast program group needs to be configured

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When the PIT P switch is enabled in the OLT global or in the VLAN service template, uplink packets can be carried the switch of Vendor tag on the service virtual port, and the user uplink packets carry Vendor tarf information, which of the following about the OLT's processing strategy for PITP message is correct?

• A.The OLT strips the Vendor tag carried in the uplink PITP message and adds the local Vendor tag
• B.The OLT directly forwards PITP packets on the user side without any processing
• C.OLT discards uplink PITP packets
• D.The OLT adds the local Vendor tap to the uplink PITP message

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The number of users under the OLT can also determine whether the VLA adopts single-layer or double-layer VLAN mode. Single-layer VLAN can be used when the number of users is small, and double-layer VLAN must be used when the need to differentiated services and the number of users is second to ().

• A.2K
• B.4K
• C.SK
• D.1K

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The data multiplexing mode of 10G GPON is similar to GPON, and TDMA technology is still used in the upstream.

• A.False
• B.True

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When configuring IPTV services on U2000, what templates are included in the IGMP template? (Multiple Choice)

• A.Program template
• B.Multicast user template
• C.Permission template
• D.Preview parameter template

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