(Single) For multicast and IPTV, which of the following statements is incorrect?

• A.Multicast refers to the point-to-multipoint communication form in the network.
• B.Through the introduction of controlled multicast, the management and control of multicast users are completed on the DSLAM device.
• C.The core of the multicast technology is to put the message copying work as close as possible to the receiver, and reduce the data traffic on the network.
• D.IPTV is a way of video on demand

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Which of the following description about MUX vlan characterization is correct?

• A.There are two ports: upstream port and service virtual port
• B.a MUX VLAN can contain multiple upstream ports and multiple service virtual ports
• C.two layer can communicate with each other between different MUX VLAN
• D.MUX VLAN is mainly used in community access.

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MAC address is usually purchased by each manufacturer from IEEE, but can also be specified on their own.

• A.False
• B.True

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Which of the following belongs to management protocol that is between OLT and MXU in GPON network?

• A.SNMP
• B.DHCP
• C.OAM
• D.IGMP

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(single) For the description of the UA5000, which of the following statements is wrong?

• A.UA5000 does not support VDSL2 service access at this time.
• B.UA5000 adopts the same hardware platform and supports PSTN, NGN, IMS and FTTx four networks.
• C.UA5000 supports ADSL2+ service access.
• D.The UA5000 supports various traditional leased line services under TDM/PSTN.

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