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17 Cards in this Set
- Front
- Back
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What is the OSI Model? |
The OSI model is an industry standard framework that is used to divide network communications into seven layers. Most network vendors today build their products using this framework. |
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What is a protocol stack? |
A system that implements protocol behavior using a series of layers. |
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When can a protocol stack be implemented? |
Either in hardware or software, or in a combination of both. Typically, only the lower layers are implemented in hardware, and the high layers are implemented in software. |
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What are the seven layers of the OSI Model in order (bottom up, 1-7)? |
* Physical
* Data Link * Network * Transport * Session * Presentation * Application |
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Purpose of the Physical layer? |
Defines all the electrical and physical specifications for devices |
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Purpose of the Data Link layer? |
Provides physical addressing and media access procedures |
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Purpose of Network layer? |
Responsible for logical addressing and the domain of routing |
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Purpose Transport layer? |
Provides reliable transport and flow control across a network |
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Purpose of Session layer? |
Establishes, manages and terminates the connections between the local and remote application |
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Purpose of Presentation layer? |
Transforms data formats to provide a standard interface for the Application layer |
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Purpose of the Application layer? |
Responsible for network services to applications |
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What does CLI? |
Command Line Interface |
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What does ipconfig show? (in Windows CLI) |
ipconfig displays basic configuration for all network adapters |
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What does ping do? (in Windows CLI) |
ping tests basic connectivity between devices |
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What does "net commands" do? (in Windows CLI) |
It manages network computers, servers, and resources. |
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What does tracert do? (in Windows CLI) |
tracert traces the routes that packets take from your computer to a destination host |
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What does nslookup do? |
nslookup tests and troubleshoots DNS servers |
