Passive optical network (PON) is a single-fiber bidirectional optical access network with what structure?

• A.Tree type
• B.Mesh type
• C.Chain type
• D.Ring type

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Which of the following is not a part of the PON network system?

• A.OAM
• B.ODN
• C.ONU
• D.OLT

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Which two UDP port numbers are defined by H.248 protocol by default?

• A.2944
• B.2946
• C.2945
• D.2943

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Which of the following statements about MIB is incorrect?

• A.The MIB information of a device can be read using the MIB BROWSER tool.
• B.MIB is an important part of the SNMP network management model.
• C.The OID in a MIB is usually identified by a group of letters.
• D.MIB is short for management information library.

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Is the following description correct? When negotiating the project acceptance test items with the customer, it is recommended to submit the product-related product acceptance manual directly to the customer, so that the customer can choose the test item by himself.

• A.True
• B.False

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