What is the last usable IP address in this network and what is the subnet mask?

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A network engineer has been provided subnet 209.165.202.128/27.

What is the last usable IP address in this network and what is the subnet mask?
A . 209.165.202.158 and 255.255.255.224
B . 209.165.202.159 and 255.255.255.192
C . 209.165.202.158 and 255.255.255.192
D . 209.165.202.128 and 255.255.255.192
E . 209.165.202.128 and 255.255.255.224

Answer: A

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