200-301: Cisco Certified Network AssociateDemo

The routing table identifies the destination networks and their prefix lengths: 10.10.13.0/25, 10.10.13.144/28, and 10.10.13.160/29. Converting CIDR to dotted-decimal masks gives /25 = 255.255.255.128, /28 = 255.255.255.240, and /29 = 255.255.255.248. For 209.165.202.128, the exhibit shows the 209.165.202.0 network is subnetted with /27 prefixes, so 209.165.202.128 is a /27 network, which uses mask 255.255.255.224. A /30 mask would be 255.255.255.252, which is not used for any of the listed destination prefixes.