OSPF can support multiple network types. Which of the following network types need to elect DR and BDR? (Multiple choice)

• A.ROADCAST
• B.P2MP
• C.NBMA
• D.P2P

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Which of the following about the description of the information contained in the OPEN message in the EGP is incorrect?

• A.OPEN message contains only BGP message header
• B.OPEN message contains local AS number information
• C.OPEN message contains VERSION information
• D.OPEN message contains Hold time message

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About OSPF 's ASBR Summary-LSA information description, which of the following is wrong?

• A.Link State ID indicates the Router ID of ASBR
• B.The Advertising Router fields in the ASBR-Summary-LSA of all areas are the same
• C.Advertising Router represents the ABR 's Router ID
• D.Metric indicates that the ABR to reach the ASBR of OSPF overhead

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During the operation of DHCP, multiple message types will be exchanged, so which of the following messages are not sent from the client to the server?

• A.DHCP REQUEST
• B.DHCP DISCOVER
• C.DHCP RELEASE
• D.DHCP NAK

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