HomeTopicsNetwork FundamentalsCompare physical interface and cabling types

1.3 Compare physical interface and cabling types

Overview

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Overview

Figure 1: Illustration of overview in a network

Key Points to Remember

  • Routers operate at Layer 3 and forward packets between different networks
  • Switches operate at Layer 2 and forward frames within the same network
  • Firewalls filter traffic based on security policies to protect networks
  • Access points provide wireless connectivity to wired networks