When of the following is used in each of these 3 steps?

There are 3 steps to confirm whether a range of IP address can be summarized. When of the following is used in each of these 3 steps?

A.
The first number in the contiguous block of addresses

B.
The last number in the contiguous block of addresses

C.
The size of the contiguous block of addresses

D.
The subnet mask of the original network address

Explanation:

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Cisco 642-874 Exam