Day 31: Network Components and Operation
The following list and Table 1-1 describe network device purposes at each layer of a three-layer hierarchical model:
• Access layer devices connect hosts on a local-area network (LAN) to provide access for users.
• Distribution layer devices provide connectivity between LANs.
• Core layer devices provide high-speed connectivity between distribution layer devices.
Table 1-1. Networking Devices and Their Purposes
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