UA2000 alarm according to whether be confirmed and cleared, the alarm status have? (Multiple choice)

• A.has confirmed not cleared
• B.not confirmed and has cleared
• C.has confirmed and has cleared
• D.not confirmed not cleared

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In H.248 protocol, it can set terminal via programme to test the event, once testing these events occur, what message is sent by MG to MGC to report or take appropriate action by the MG?

• A.ServiceChange
• B.AuditCapabilities
• C.Modify
• D.Notify

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When MA5600T configuring multicast services, which of the following options must be configured, otherwise, multicast program may not be able to watch? (Multiple choice)

• A.multicast VLAN
• B.igmp profile
• C.igmp program
• D.igmp user

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Part of the field in the IP packet is dedicated to the description of the life cycle of the message, that is TTL value, how much is its maximum value ?

• A.1023
• B.255
• C.1024
• D.256

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Forward MA5600T/MA5680T SVLAN + CVLAN usually refers to the business board through SVLAN + CVLAN forwarding packets, main control board through the VLAN + MAC forwarding message;Strict SVLAN + CVLAN forwards refers to the business on the board and main board through the SVLAN + CVLAN forwarding message.

• A.True
• B.False

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