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Cards In This Set
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Define Same-layer interaction
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The communication between two networking devices for the purposes of the functions defined at a particular layer of a networking model. This communication is conducted using a header and encapsulated data defined by that layer of the model.
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Define Adjacent-layer interaction
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The basic concept of how on one computer two adjacent layers in a network model work together with the lower layer providing services to the higher layer.
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In regards to TCP, What is a segment?
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A segment is the term used to describe the TCP header and its encapsulated data. I.E. the transport layer in the TCP/IP model
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What is a packet?
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A Packet is the IP header and its encapsulated data, i.e. the Internet layer of the TCP/IP model
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What is a Frame?
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A frame is the Link Header, it's encapsulated data, and the Link trailer. i.e. the Network access layer of the TCP/IP model.
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What is a protocol data unit (PDU)?
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A PDU is an OSI Layer term to generically refer to a grouping of information at a particular layer of the OSI model. i.e. LxPDU would imply the data and headers as defined by Layer X
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List the layers of the OSI Model.
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(FYI mnemonic: All people seem to need data processing)
7. Application6. Presentation5. Session4. Transport3. Network2. Data-Link1. Physical |
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List the Layers of the TCP/IP models and their OSI Equivalents
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TCP/IP model OSI ModelApplication Layers 5-7 (App, Pres, session)Transport Layer 4 (Transport)Internet Layer 3 (Network)Network Access Layer 2-1 (Data-Link, Physical) Sometimes Network Access is split into Data Link & Physical |
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List and define layer 7 of the OSI Model & Provide an Example(s)
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Application - Interfaces between network and application software. Also includes user authentication services
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List and define layer 6 of the OSI Model & Provide an Example
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Presentation - Defines and negotiates data formats between systems. It also defines encryption. Examples ASCII, JPEG, binary.
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List and define layer 5 of the OSI Model & Provide an Example
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Session - Establishes and maintains end-to-end bidirectional flows between endpoints. Includes managing transaction flows
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List and define layer 4 of the OSI Model & Provide an Example
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Transport - Provides connection establishment and termination, flow control, error recovery, and segmentation of large data blocks into smaller parts for transmission.
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List and define layer 3 of the OSI Model & Provide an Example
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Network - Logical addressing, routing, and path determination.
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List and define layer 2 of the OSI Model & Provide an Example
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Data-link - formats data into frames appropriate for transmission onto some physical medium. Defines rules for when the medium can be used. Defines means by which to recognize transmission errors.
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List and define layer 1 of the OSI Model & Provide an Example
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Physical - Defines the electrical, optical, cabling, connectors, and procedural details required for transmitting bits over a physical medium.
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