An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is 192.168.0.0 255.255.254.0. What wildcard mask would the administrator use in the OSPF network statement?
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Last Updated: May 9, 2026
IT Exam Items Repository › Category: CCNA 3 v7 › An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is 192.168.0.0 255.255.254.0. What wildcard mask would the administrator use in the OSPF network statement?
An administrator is configuring single-area OSPF on a router. One of the networks that must be advertised is 192.168.0.0 255.255.254.0. What wildcard mask would the administrator use in the OSPF network statement?
- 0.0.7.255
- 0.0.1.255
- 0.0.3.255
- 0.0.15.255
Explanation: The simplest method to calculate a wildcard mask is to subtract the network's subnet mask from a "quad-255" address (255.255.255.255). In this case, subtracting 255.255.254.0 from 255.255.255.255 results in 0.0.1.255. This mask tells the OSPF process to match the first 23 bits of the address exactly while ignoring the remaining bits.
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