Which statement about the 0SPF protocol DR is correct? ()

• A.Router ID, the larger the value, the more preferred it is to be elected as DR
• B.DR election is preemptive
• C.DR must be the highest priority device in the network
• D.An interface priority is 0, then the interface cannot be a DR

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What are the three sources for routers to obtain routing entries? ()*

• A.Static routing
• B.Dynamic routing
• C.Direct route
• D.Aggregate routing

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Which of the following are not characteristics of a small campus network?

• A.Fewer users
• B.Wide coverage
• C.Simple network level
• D.Simple network requirements

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The WPLS tag header is encapsulated between the data link layer header and the network layer header of the message.

• A.True
• B.False

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In order for the STA to obtain the SSID related information on the AP, which of the following messages is used by the AP to proactively declare the wireless network SSID information? ()

• A.eacon
• B.Join
• C.Probe
• D.Discovery

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