OLT uplink can improve bandwidth and reliability through link aggregation. Which of the following modes is currently supported by OLT uplink aggregation? (Multiple choice)

• A.Automatic
• B.Static
• C.Manual
• D.Dynamic

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OLT uplink can improve bandwidth and operability through link aggregation. Which of the following modes are currently supported by OLT uplink aggregation? (Multiple choice)

• A.Manual
• B.Dynamic
• C.Static
• D.Automatic

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The SIP user and the server are completed the establishment, maintenance, and removal of a voice path through a series of message interactions. Therefore, each information contained in the SIP text is one-to-one, and there will be no single information values appears multiple times.

• A.False
• B.Ture

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Which of the following protocol is used to manage multicast membership?

• A.IGMP
• B.PIM-DM
• C.MSDP
• D.PIM-SM

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When the invitation message sent by user A reaches user B after passing through servers C, D, and E, the server address recorded in the VIA field in the message received by user B from top to bottom is:

• A.C->E->D
• B.E->D->C
• C.E->C->D
• D.C->D->E

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