Which OSPF wildcard mask would be appropriate to use for the given network prefix?

Which OSPF wildcard mask would be appropriate to use for the given network prefix?

• /30 and 0.0.0.2
• /13 and 0.7.255.255
• /23 and 0.0.2.255
• /18 and 0.0.64.255

Explanation: To calculate wildcard masks, follow these steps:

1. Change the subnet mask into dotted-decimal format.
2 Subtract the resulting mask from 255.255.255.255.
3. The result is the wildcard mask.

Example: A mask of /18 equals 255.255.192.0. A mask of 255.255.192.0 subtracted from
255.255.255.255 yields a wildcard mask of 0.0.63.255.

Exam with this question: CCNA 2 v5 Chapter 8: Check Your Understanding Questions Answers