Describe devices in a network environment and their place in the OSI model.

Description should include

  • elements of a network environment
  • explanation of each device’s role
  • each device's place in the OSI model
  • switches 
    • switch access
    • switch management
    • virtual LAN
    • trunking
    • Spanning Tree Protocol (STP)

  • routers
    • routing basics
    • routing protocols
    • network address translation
    • routing optimization

  • firewalls
    • security appliances
    • firewall design and implementation.