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An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is What wildcard mask would the administrator use in the OSPF network statement?

Explanation & Hint:

A wildcard mask is the inverse of a subnet mask. For the subnet mask, the binary representation is:


Inverting this binary representation gives us the wildcard mask:


This corresponds to the decimal wildcard mask:

Therefore, the administrator would use a wildcard mask of in the OSPF network statement to advertise the network with a subnet mask of

For more Questions and Answers:

CCNA 3 v7 – ENSA v7.02 Final Exam Answers Full 100%

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