Is the CCNA worth it?

The network wildcard mask is configured improperly.

A wildcard mask is a bits mask which indicates the parts of an IP address available for examination. They are used in several places in the Cisco IOS for example:

• It indicates the size of a network or subnetwork for some routing protocols, such as OSPF.
• It also shows what IP address should be permitted or denied in ACLs otherwise known as Access Control Lists.
At a simpler form, a Wildcard Mask can be thought of as an inverted Subnet Mask. For example, a subnet mask of 255.255.255.0 (binary equivalent = 11111111.11111111.11111111.00000000) inverts to a wildcard mask of 0.0.0.255.
A wild card mask is a matching rule. The rule for a wildcard mask is;
• 0 means the equivalent bit must match.
• 1 implies that the equivalent bit doesn’t Matter.