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10 Cards in this Set
- Front
- Back
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What is the OSI Model?
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Describes the data communication processes; consists of 7 layers.
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What are the 7 layers of the OSI model?
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7- Application
6- Presentation 5- Session 4- Transport 3- Network 2- Data Link 1- Physical |
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According to the OSI model, how does information flow?
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Information flows from Layer 7, the application layer, to Layer 1, where it's placed on the physical network circuits. After it arrives at the next device, it will flow up and down the layers as needed.
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What Layer of the OSI model do data switches typically look at to make switching decisions?
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Data switches typically only look at information at layer 2.
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What layer, on the OSI model, do routers look at?
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Layer 3
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What layers do clients and servers use on the OSI model?
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Clients and servers make use of all seven layers.
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What does OSI stand for?
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Open Systems Interconnection
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What does the OSI model help you do?
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It helps you verify the success of the communication process at various layers or levels of the model; it also helps you locate the point of failure.
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What is the focus of Layers 1 and 2 of the OSI model?
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Communication over the "wire"
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What are 5 ways you can troubleshoot OSI layers 1 and 2?
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1- View the contents of your ARP cache
2- NETSTAT- program that can be used to determine local area network physical connectivity 3- Protocol Analyzer- used to diagnose a physical network problem 4- Link status and activity counters 5- Link Lights |
