Identify the 3 key features of the Cisco Discovery Protocol?
A.) Off by default
B.) Will allow for the discovery of layer 3 addresses on
neighbor routers
C.) Verify connectivity
D.) Open standard
E.) Does not require any layer 3 protocols to be configured
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Answer: B C E
CDP is used for 2 basic reasons; neighbor connectivity and
layer 3
discovery if configured. It is proprietary and is on by default.
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CCNA 
