The total downstream bandwidth of the 10G EPON PON port is the sum of the EPON downstream bandwidth and the 10G EPON downstream bandwidth.

• A.FALSE
• B.TRUE

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Regarding multicast and IPTV, which of the following statements is incorrect?

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

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What are the VLAN attributes supported by MA5680T?

• A.QinQ
• B.MuX
• C.Stacking
• D.Common

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MA5600T/MA5680T system defaults to a super user level user, which cannot be added or deleted .
What is the default super user name/password of the system?

• A.root/root
• B.admin/admin
• C.root/admin
• D.admin/root

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When the PC obtains an IP address through DHCP, the gratuitous ARP packet will be used to detect whether the allocated IP is occupied. Among the following options, which of the following options is correct about the time point when the gratuitous ARP packet is sent?

• A.When the PC sends the DHCP Request message, it sends gratuitousARP to detect whether there is an IP conflict.
• B.After the PC receives the offer message from the server, it sends gratuitousARP to check whether there is an IP conflict.
• C.Before sending the offer message, the DHCP server sends gratuitousARP to check whether there is an IP conflict.
• D.After the PC receives the ACK message from the server, it sends gratuitousARP to check whether there is an IP conflict.

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