Network Interface Card
A card installed in a computer that allows you to connect to a network (can be Ethernet, telephone, or wireless)
Wired NIC
Connects computer to network cable
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Network Interface Card
A card installed in a computer that allows you to connect to a network (can be Ethernet, telephone, or wireless)
Wired NIC
Connects computer to network cable
Wireless NIC
Sends radio signal from computer
Minimum information required on a TCP/IP Network
Subnet mask
IP address of client computer
DNS server IP address
Router IP address (default gateway)
What happens to Ethernet Frame at each stop
the ethernet frame is removed and a new one is created; only lives long enough for one computer
Why have layers
More organized; if there is an error you can debug easier
Disadvantages to layers
slower
How far do packets go through gateways
from physical layer up to network layer
Where are the transport and application involved?
sending computer to create application layer packet and tcp segment
receiving computer to understand the tcp segment and process the application layer packet