Layers (Class 5)

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Network Interface Card

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A card installed in a computer that allows you to connect to a network (can be Ethernet, telephone, or wireless)

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Wired NIC

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Connects computer to network cable

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9 Terms

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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)

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Wired NIC

Connects computer to network cable

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Wireless NIC

Sends radio signal from computer

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Minimum information required on a TCP/IP Network

Subnet mask

IP address of client computer

DNS server IP address

Router IP address (default gateway)

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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

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Why have layers

More organized; if there is an error you can debug easier

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Disadvantages to layers

slower

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How far do packets go through gateways

from physical layer up to network layer

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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