ccna 200 301 syllabus of errors text features

ccna 200 301 syllabus of errors text features.k194 Chapter 6 RIP*** |06S* 0.0.0.0/0 [1/0] via 12.1.1.2C12.1.1.0 is directly connected, Seriall/0C192.168.2.0/24 is directlyconnected, LoopbackOS172.16.0.0/15 [1/0] via 12.1.1.1Here first look at the router R2 on the display, why 192.168.2.0/24 and 172.16.0.0/15 only shows a line, but 12.1.1.0/24 is shown as two lines? The first thing to know here is the level 1 (Level 1) route and the level 2 (Level 2) route.(1) Level 1 routeA Level 1 route is a route that uses a subnet mask that is less than or equal to the default network mask of a classful network. Level 1 routes include: . Network routes: A route uses a subnet mask equal to the subnet mask of the classful network, such as 192.16820/24 on R2. Supernet route: a route uses a subnet mask that is less than the subnet mask of the classful network, such as 172.16.0.0/15 on R2... Default route: 0.0.0.0/0, such as O.O.O.O/Oo on R1 The three Level 1 routes listed above are all shown as one line only.(2)ParentrouteNote that the first row of the routing table for Router R2, 12.0.0.0/24, is a parent route, which does not include the IP address of the next hop or the router's outgoing interface. The parent route is actually a header, implying that it will be followed by a level 2 route, which is also called a childroute. The parent route is automatically created whenever a route with a subnet mask length greater than the length of the subnet mask of a classful network appears in the routing table.