Layer 3 addressing is hierarchical because it allows the division of networks into subnets. For example, one route entry can refer to a large general network and another can refer to a subnet of that same network. When forwarding a packet, the router will select the most specific route that it knows. However, if a specific subnet is not in the routing table but the larger network that holds the subnet is known, then the router will send it to the larger network, trusting that another router will find the subnet.
which layer of the hierarchical three-layer design model combines traffic from multiples IDFs? core layer
routing between VLANs
The three correct options are: 3. Hierarchical Explanation: By design, layer three addressing is hierarchical, as you can group hosts in different networks. 4. Uniquely identifies each host Explanation: Each host has a unique address inside its network. 6. Contains a network portion Explanation: For example, in an IP (v4) address a portion of the most significant bits identify the network the host belongs to.1.It supports data communications between networks 2.It prevents broadcasts 3.It uniquely identifies each host
Reduced content for bandwidth Increased fault tolerance of the network Simplification of management and troubleshooting
router bro
hierarchical addressing.
Core, Distribution, and Access.
A hierarchical network design includes the following three layers:The backbone (core) layer that provides optimal transport between sitesThe distribution layer that provides policy-based connectivityThe local-access layer that provides workgroup/user access to the networkhttp://docwiki.cisco.com/wiki/Internetwork_Design_Guide_--_Internetworking_Design_Basics#Function_of_the_Access_Layer
core switchesaccess switchesbackbone switchesdistribution switches
core switchesaccess switchesbackbone switchesdistribution switches
security policiesquality of serviceLayer 3 functionality
Layer 3 i.e, network layer of the OSI model is used to IP addressing.