Which DNS name can only be resolved within Amazon EC2?

Which DNS name can only be resolved within Amazon EC2?
A .  Public DNS name
B .  Internal DNS name
C .  External DNS name
D .  Global DNS name

Answer: B

Explanation:

Only Internal DNS name can be resolved within Amazon EC2.

Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-instance-addressing.html

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