| OSI Model | More of the OSI Model | Transmission Control Protocol/Internet Protocol (TCP/IP) Model | More of TCP/IP Model | Protocols and Devices on the OSI Model |
|---|---|---|---|---|
|
What is the Physical Layer (Layer 1)
Defines hardware connections and turns binary into physical pulses (electrical or light). Repeaters and hubs operate at this layer.
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What is the Network Layer (Layer 3)
Moves packets between computers on different networks.
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What is Transport Layer (Layer 3 of the TCP/IP Model)
Combines features of OSI's Transport and Session Layers.
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Link Layer (Layer 1 of TCP/IP Model)
Similar to OSI's Data Link and Physical Layers
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What is Application Layer
HTTP, FTP, SMTP, and POP3 are examples of protocols that operate on this layer.
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What is the Presentation Layer (Layer 6)
Manages data encryption, hides the differences among various types of computer signals.
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What is Media Access Control (MAC)
Sublayer of Data Link Layer. The part of the NIC that remembers the NIC's own MAC address and attaches that address to outgoing frames.
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What is Internet Layer (Layer 2 of TCP/IP Model)
Same as OSI's Network Layer
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What is Application Layer (Layer 4 of TCP/IP Model)
This layer consists of the processes that applications use to initiate, control, and disconnect from a remote system.
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What is the Data Link Layer
Bridges operate on this layer
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What is the Application Layer (Layer 7)
Provides tools for programs to use to access the network (and some lower levels).
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What is the Data Link Layer (Layer 2)
Identifies devices on the Physical Layer.
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What is Transport Layer (Layer 3 of the TCP/IP Model)
It is concerned with the assembly and disassembly of data, as well as connection-oriented and connectionless protocols.
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What is the Internet Layer?
Layer 2 of the TCP/IP Protocol
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What is Physical Layer
Repeaters and hubs operate on this layer.
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What is the Session Layer (Layer 5)
Manages connections between machines.
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What is Logical Link Control
The aspect of the NIC that talks to the operating system, places data coming from the software into frames, and creates FCS's on each frame. Also deals with incoming frames - processing those that belong to the NIC and erasing others.
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What is Application Layer (Layer 4 of TCP/IP Model)
Combines the top 3 layers of the OSI Model.
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Link Layer (Layer 1 of TCP/IP Model)
Consists of any part of the network that deals with frames.
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What is the Network Layer
IP and IPX operate on this layer
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What is the Transport Layer (Layer 4)
Breaks data down into manageable chunks.
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What is the Open Systems Interconnection (OSI)
An architecture model based on the OSI Protocol Suite, which defines and standardizes the flow of data between computers.
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What is Internet Layer (Layer 2 of TCP/IP Model)
Any part of the network that deals with pure IP packets - getting a packet to its destination.
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What is the Application Layer
Layer 4 of the TCP/IP Model
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What is Transport Layer
TCP, UDP, SPX, and NetBui operate at this layer
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