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I Concepts & Terms Required - Chapter 0011
Weve already investigated the
kinds of cable youre likely to find connecting the devices in
a network environment. In this chapter, we will survey the types of
network devices that can take part in a LAN, describing the functionality
of each type, and explaining where it fits in the OSI 7-layer
It may be useful for you to group
items by OSI layer, as weve done here, when learning their features
and functionality for the Network+ exam. Knowing which layer a device
fits into can provide clues as to its functionality and even a starting
point for troubleshooting a network issue.
Definitions You Need To Know
- Know where a repeater, hub, gateway, switch,
NIC, router, bridge and router operate in the OSI model
- Know how to connect a NIC to a host
- Know the advantages of a switch over a hub
- Know when to use a repeater or a media filter
- Know what a MAC address is
- Differentiate between a bridge and a router
- Describe router functions
- Routable vs. non-routable protocols
Gateway (proxy, e-mail, SNA)
MAU (Multistation Access Unit)
NIC (Network Interface Card)
Plug n Play
Wireless Access Point
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