CompTIA Network+ N10-009 Cert Guide, 2nd Edition

Appendix C

Memory Tables Answer Key

Chapter 2

Table 2-1 Networking Device Summary

Device	Description	Key Points
Router	Connects networks	A router uses the software-configured network address to make forwarding decisions.
Switch	Connects devices on a twisted-pair network	A switch forwards data to its destination by using the MAC address embedded in each packet. It forwards data only to nodes that need to receive it.
Multilayer switch	Functions as a switch or router	Operates on Layers 2 and 3 of the OSI model as a switch and can perform router functionality.
Firewall	Provides controlled data access between networks	Firewalls can be hardware or software based. They are an essential part of a network’s security strategy.
IDS/IPS ...