6.1.9 Routers Flashcards
What type of addresses do Ethernet switches and Wi-Fi access points use to forward frames?
MAC addresses
MAC addresses identify a host’s hardware interface
What is a network segment?
A section where hosts can send frames to one another using just their MAC addresses
What types of devices transmit data over DSL, cable, fiber, satellite, and cellular links?
Digital modems, ONTs, and cellular radios
What is typically required for connecting a local network to the internet?
A protocol that distinguishes between private LAN and public WAN, and a router
What is the primary protocol used to connect a local network to the internet?
Internet Protocol (IP)
How do routers differ from switches in terms of addressing?
Routers forward packets using IP addresses, while switches forward frames using MAC addresses
What does an IP address identify?
The identity of both the network and a single host within that network
What is a SOHO router generally used for?
Routing between its local network interface and its WAN/Internet interface
What is the function of a LAN router?
Divides a single physical network into multiple logical subnetworks
What is a broadcast domain?
A logical subnetwork where all hosts can receive broadcast packets
What is one security benefit of using a LAN router?
Traffic passing from one logical network to another can be subject to filtering rules
What interfaces does a WAN or border router typically have?
An Ethernet interface for the local network and a digital modem interface for the WAN
Fill in the blank: A router forwards packets through the internet using _______.
IP addresses
True or False: A MAC address identifies both the network and the host.
False
What happens if there are too many hosts in the same broadcast domain?
It reduces performance
