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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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PHYSICAL LAYER |
Layer 1 of the networking model which includes ... * The physical devices that interconnect computers * The specifications for the networking cables (RJ45) *The connectors that join devices together * The specifications of describing of how a signal is sent over these connectors |
Ethernet cable, USB cable In the package delivery scenario this layer is the delivery truck and the roads. |
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DATA LINK LAYER |
Layer 2 of the networking layer. Sometimes referred as Network Interface or Network Access Layer which includes.... * Defining a common way of interpreting the signals so Network devices can communicate * Ethernet protocols are the most used protocols at this layer * Wireless technologies are also at this layer and are also most used protocols * Ethernet standards also define a protocol responsible for getting data to nodes on the same network or link
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Frames; MAC Address; Ethernet; Wi-Fi In the package delivery scenario this layer is how the delivery trucks get from one intersection to the next over and over. |
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ETHERNET STANDARDS |
*Define a protocol responsible for getting data to nodes on the SAME NETWORK or LINK * Located at LAYER 2 aka DATA LINK |
How is the signals going to go from point A to point B? |
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NETWORK LAYER |
Layer 3 of the networking model. Can be called Networking layer which.... * Allows different networks to communicate with each other through devices known as routers * Is responsible for getting data delivered across a collection of networks |
Handshake; IP; Datagram; IP address Think of 1 device on your home network that connects with a server on the internet, it's the Network layer that helps get the data between these two locations In the package delivery scenario this layer identifies which roads needs to be taken to get from address A to address B. |
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INTERNETWORK |
A collection of networks connected together through routers, the most famous of these being the internet |
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IP |
Internet Protocol * The heart of the internet and most smaller networks around the world |
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Network software is divided into ____&____ categories. Each doing what? |
* CLIENT (initiating request for data) * SERVER (answering the request across the network) |
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TRANSPORT LAYER |
Layer 4 of the networking model which.... * Sorts out which client and server program are suppose to get that data * Protocol most commonly used TCP * Another protocol used is UDP |
This layer ensures that the delivery driver knows how to knock on your door to tell you your package has arrived |
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TCP |
Transmission Control Protocol * A transfer protocol that provides mechanisms to ensure that data is reliably delivered * Different from UDP protocol * Sometimes put together with IP (TCP/IP) |
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APPLICATION LAYER |
Layer 5 in the networking model. * Lots of different protocols at this layer * Most people are familiar with this layer * Protocols are application-specific |
The protocols used to allow you to browse the web or send and receive e-mails In the package delivery scenario this layer is the contents of the package itself. |
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NAT |
Network Address Translation |
What does it stand for? |
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Network Address Translation |
A technology that allows a gateway, usually a router or firewall, to rewrite the source IP of an outgoing IP Datagram while retaining the original IP in order to rewrite it into the response |
The definition of what it is? |
