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Definition
| Transmission Control Protocol/Internet Protocol |
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Term
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Definition
| Systems Network Architecture - Networking model published by IBM in 1974. Others followed it and enabled products to communicate to IBM computers. |
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Definition
| International Organization for Standardization |
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Term
| Open System Interconnection (OSI) |
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Definition
| Network model, comprised of seven layers, is used as a point of reference for discussion other protocol specifications. TCP/IP is often compared to it. |
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Definition
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Term
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Definition
Application Layer (HTTP, POP3, SMTP)
Transport Layer (TCP, UDP)
Internet Layer (IP)
Network Access Layer (Ethernet, Frame Relay) |
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Term
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Definition
| Provides the interface between software on a computer and the network itself. Example: web browser. |
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Term
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Definition
| Hypertext Transfer Protocol - Performs requests for files and actual transfer of the file. Used to transfer web pages. |
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Term
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Definition
| Hypertext Markup Language - Defines how the web browser interprets text inside files (size, font, color) and directions about other files the web browser should get (pictures, animations, etc.). |
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Term
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Definition
| Universal Resource Locator |
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Term
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Definition
| The mechanism that guarantees delivery of data across a network. TCP provides an error-recovery feature to the application protocols by using acknowledgements. |
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Term
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Definition
| In TCP, a term used to describe a transport layer header and its encapsulated data (also called an L4PDU). |
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Definition
| Defines the details of network infrastucture (IP addresses, routing, etc.) so the network can deliver data. |
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Term
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Definition
| A logical grouping of information that includes the network layer header and encapsulated data, but specifically does not include any headers and trailers below the network layer. |
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Term
| TCP/IP Network Access Layer |
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Definition
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Includes protocols, cabling standards, headers, and trailers that define how to send data across a wide variety of physical networks. Many describe it as two layers - data link layer and physical layer - which is consistent with the OSI model.
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Term
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Definition
| The process of putting headers, and sometimes trailers, around some data. Each layer adds its own header to the data supplied by the higher level. |
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Term
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Definition
| A term referring to a data-link header and trailer, plus the data encapsulated between the header and trailer. |
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Term
| Application Layer - OSI Layer 7 (Functional Description) |
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Definition
| Interface between network and application software. Also includes authentication services. |
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Term
| Presentation Layer - OSI Layer 6 (Functional Description) |
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Definition
| Presentation Layer: Defines the format and organization of data. Includes encryption. |
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Term
| Session Layer - OSI Layer 5 (Functional Description) |
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Definition
| Session Layer: Establishes and maintains end-to-end bidirectional flows between endpoints. Includes managing transaction flows. |
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Term
| Transport Layer - OSI Layer 4 (Functional Description) |
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Definition
| Transport Layer: Provides a variety of services between two host computers, including connection establishment and termination, flow control, error recovery, and segmentation of large data blocks into smaller parts for transmission. |
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Term
| Network Layer - OSI Layer 3 (Functional Description) |
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Definition
| Network Layer: Logical addressing, routing, and path determination. |
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Term
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Definition
| Defines how each device can have an address that can be used by the routing process. Part of OSI Layer 3 - Network Layer. |
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Term
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Definition
| Defines how devices (typically routers) forward packets to their final destination. Part of OSI Layer 3 - Network Layer |
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Term
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Definition
| The work done by routing protocols by which all possible routes are learned, but the best route is chosen for use. |
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Term
| Data link Layer - OSI Layer 2 (Functional Description) |
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Definition
| Data Link Layer: 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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Term
| Physical Layer - OSI Layer 1 (Functional Description) |
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Definition
| Physical Layer: Defines the electrical, optical, cabling, connectors, and procedural edtails required for transmitting bits, represented as some form of energy passing over a physical medium. |
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Term
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Definition
All People Seem To Need Data Processing (7-1)
Please Do Not Take Sausage Pizzas Away (1-7)
Pew! Dead Ninja Turtles Smell Particularly Awful (1-7) |
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Term
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Definition
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Term
| Request for Comments (RFC) |
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Definition
| A document used as the primary means for communicating information about TCP/IP protocols. Some are designated by the Internet Architecture Board (IAB) as Internet standards, and others are informational. |
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Term
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Definition
| OSI Model encapsulation terminology. A PDU represents the bits that include the headers and trailers for that layer, as well as encapsulated data. |
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Term
| Universal Resource Locator (URL) |
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Definition
| The text that identifies web pages; often called web address. |
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Term
| Hypertext Markup Language (HTML) |
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Definition
| Defines how the web browser interprets text inside files (size, font, color) and directions about other files the web browser should get (pictures, animations, etc.). |
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Term
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Definition
| Systems Network Architecture |
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Term
| Systems Network Architecture (SNA) |
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Definition
| Networking model published by IBM in 1974. Others followed it and enabled products to communication to IBM computers. |
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Term
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Definition
| Hypertext Transfer Protocol |
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Term
| Hypertext Transfer Protocol (HTTP) |
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Definition
| Performs requests for files and actual transfer of the file. Used to transfer web pages. |
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Term
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Definition
| On a computer that receives data over a network, the process in which the device interprets the lower-layer headers and, when finished with each header, removes the header, revealing the next-higher-layer PDU (Protocol Data Unit). |
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Term
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Definition
| The communication between two networking devices for the purposes of the functions defined at a particular layer of a networking model, with that communication happening by using a header defined by that layer of the model. The two devices set values in the header, send the head and encapsulated data, with the receiving device(s) interpreting the header to decide what action to take. |
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Term
| Adjacent-layer Interaction |
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Definition
| The general topic of how on one computer, tow adjacent layers in a networking architectural model work together, with the lower layer providing services to the upper layer. |
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Term
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Definition
| A generic term referring to any set of protocols and standards collected into a comprehensive grouping that, when followed by the devices in a network, allows all the devices to communicate. Example include TCP/IP and OSI. |
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Term
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Definition
| Open System Interconnection |
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Term
| List benefits of layered networking |
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Definition
- less complex
- standard interfaces
- easier to learn
- easier to develop
- multivendor interoperability
- modular engineering
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Term
| List protocols and specifications of Layers 5-7: Application, Presentation, Session |
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Definition
- Telnet
- HTTP
- FTP
- SMTP
- POP3
- VoiP
- SNMP
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Term
| List devices related to Layers 5-7: Application, Presentation, Session |
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Definition
- Firewall
- Intrusion detection system
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Term
| List protocols and specifications of Layer 4: Transport |
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Definition
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Term
| List devices related to Layer 4: Transport |
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Definition
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Term
| List protocols and specifications of Layer 3: Network |
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Definition
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Term
| List devices related to Layer 3: Network |
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Definition
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Term
| List protocols and specifications of Layer 2: Data link |
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Definition
- Ethernet (IEEE 802.3)
- HDLC
- Frame Relay,
- PPP
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Term
| List devices related to Layer 2: Data link |
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Definition
- LAN switch
- wireless access point
- cable modem
- DSL modem
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Term
| List protocols and specifications of Layer 1: Physical |
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Definition
- RJ-45
- EIA/TIA-232
- V.35
- Ethernet (IEEE 802.3)
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Term
| List devices related to Layer 1: Physical |
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Definition
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