In which of the following network types does the OSPF protocol need to elect DR and BDR? (Multiple choice)

• A.NBMA
• B.Point to multipoint
• C.Broadcast type
• D.Point-to-point type

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NAPT distinguishes the IP addresses of different users through the protocol numbers in TCP, UDP, or IP packets.

• A.False
• B.True

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The mask length is 12 bits can be expressed as?

• A.255.255.255.0
• B.255.240.0.0
• C.255.248.0.0
• D.255.255.0.0

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Which parameter is used in the spanning tree protocol for root bridge election?

• A.Port ID
• B.Bridge priority
• C.Root path cost
• D.Bridge ID

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When the router is powered on, it will read the configuration file from the default storage path to initialize the router. If there is no configuration file in the default storage path, what will the router use for initialization?

• A.New configuration
• B.Default parameters
• C.Initial configuration
• D.Current configuration

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