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| | Data link layer - Wikipedia, the free encyclopedia |
 | | The data link layer is often implemented in software as a "network card driver". | | | The data link is all about getting information from one place to a selection of other places. | | | The operating system will have a defined software interface between the data link and the network transport stack above. |
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http://en.wikipedia.org/wiki/Data_link_layer
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| | Free GIS Data - GIS Data Depot |
| | Data that is particularly troublesome for users is USGS SDTS formatted data. | | | For those of you wishing to simply "view" the data we introduce you to a nifty, free viewing program you can use to quickly and easily view E00 and more than 80 other common data formats. | | | This document serves to help users of the derived DEM data and to better understand the data format. |
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http://data.geocomm.com
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| | CCNA Study Notes - OSI - Data Link Layer |
| | The receiving computer recalculates the CRC and compares it to the one sent with the data. | | | Packets and datagrams are converted into frames and the Data Link header is added. | | | There are two types of flow control implemented in data communications - software and hardware: |
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http://defoenet.com/ccna/osi_l2.html
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| | Integrated Postsecondary Education Data System (IPEDS), Data Files |
| | The Dataset Cutting Tool (DCT) is a function within the PAS that allows users to download IPEDS data to use with software packages for analysis and comparisons. | | | IPEDS data starting from 1986 are available through the IPEDS Peer Analysis System (PAS). | | | Use the DCT to obtain complete data files and codes or to create customized datasets according to your specifications. |
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http://nces.ed.gov/ipeds/data.asp
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| | Information about RAID, NAS, Email Recovery and Hard Drive Data Recovery Services |
| | The demand for data recovery is rising steadily and throughout time numerous devices have been created that have aided the data recovery process. | | | ESS Data Recovery has worked hard to be approved by all hard disk manufacturers, so you have piece of mind when it comes to warranty maintenance. | | | Our comprehensive approach to evaluating and recovering your hard drive will leave you certain that your data is in the right hands. |
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http://www.essdatarecovery.com
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| | The Data Link Layer |
| | It accomplishes this task by having the sender break the input data up into data frames (typically a few hundred bytes), transmit the frames sequentially, and process the acknowledgment frames sent back by the receiver. | | | If there is a chance that these bit patterns might occur in the data, special care must be taken to avoid confusion. | | | Frequently, flow regulation and error handling are integrated, for convenience. |
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http://www2.rad.com/networks/1994/osi/datalink.htm
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| | Timex - Data Link (Previous Products) |
| | Current Data Link product information is available here. | | | Send important information from your personal computer to the award-winning Timex Data Link® watch... | | | In seconds, you can send up to 150 entries from the Timex and Microsoft-developed software that's included. |
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http://www.timex.com/html/data_link.html
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| | LAN Data Link Layer Protocols - CIF Ethernet FDDI GARP GMRP GVRP LLC Multiprotocol over ATM SNAP SRP MAC ... |
| | The Fiber Distributed Data Interface (FDDI) is a 100 Mega-bit technology using a timed token over a dual ring of trees. | | | Ethernet is a widely used data communications network standard developed by DEC, Intel, and Xerox. | | | Both the SDEL and EDEL have intentional Manchester code violations in certain bit positions so that the start and end of a frame can never be accidentally recognized in the middle of other data. |
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http://www.protocols.com/pbook/lan.htm
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| | Data-Link Switching (DLSw) |
| | The acks are between the end device and the local DLSw switch (router). | | | Message length—Defines the number of bytes within the data field following the header. | | | This value is set to 0x10 for information and independent flow control messages, indicating a decimal value of 16 bytes. |
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http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/dlsw.htm
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| | Synchronous Data Link Control (SDLC)and Derivatives |
| | The SDLC protocol was developed by IBM in the mid-1970s for use in SNA environments. | | | The SNA data is carried as user data in Layer 3 X.25 packets. | | | In other words, after the receiving node's IEEE 802.2 implementation completes its processing, the upper-layer process identified in the DSAP field receives the remaining data. |
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http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/sdlcetc.htm
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| | Data Link Switching (DLSw) |
| | The Data Link Connections (DLCs) are terminated at the router so that the RIF ends at a virtual ring within the router. | | | The RIF (which enforces this 7 hop limit) terminates at the peer router where a 'virtual ring' is configured. | | | The original RFC 1434 described DLSw but this has been superceded by RFC 1795 which describes DLSw version 1. |
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http://data-link-switching-dlsw.cybersabotage.com/dlsw.htm
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| | Notes on Data Link Layer |
| | A simple way is for the sender to sum the binary values of all of the bytes sent. | | | If there are no errors end to end, then there could not have been any errors on the links. | | | A frame generally has a header followed by the transmitted data. |
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http://williams.comp.ncat.edu/Networks/datalink.htm
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| | HDLC - High-level Data Link Control(HDLC),Link Access Procedure Balanced(LAPB) - X.25 |
| | If data is flowing in both directions (full duplex), the data frames themselves carry all the information required to ensure data integrity. | | | There are two distinct HDLC implementations: HDLC NRM (see SDLC) and HDLC Link Access Procedure Balanced (LAPB). | | | Supervisory frames perform the flow control and error recovery functions. |
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http://www.sangoma.com/hdlc.htm
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| | Basic HTML data types |
| | character references, but style sheet data that is the value of an attribute may contain them. | | | User agents must not evaluate style data as HTML markup. | | | case-sensitivity of style data depends on the style sheet language. |
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http://www.w3.org/TR/REC-html40/types.html
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| | SLIDAD |
| | You can see directly the data you send on LED's and you may connect a logic state analyser to the three 20-pin connectors. | | | You can use it to test the hardware of a FEMB at its S-LINK interface without having to set up a real S-LINK with software on the receiving side. | | | Three connectors allow direct observation of data and control signals with a logic analyser |
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http://hsi.web.cern.ch/HSI/s-link/devices/slidad
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| | Soil Data Mart - Help. |
| | The Soil Data Mart website will be unavailable during this time while any updates are being processed. | | | Instead, these download requests are placed into a queue and processed to package the requested data together into a zip file. | | | Note that the page header may not be displayed at all if the Soil Data Mart is being viewed through another application. |
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http://soildatamart.nrcs.usda.gov
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| | Laser data link |
| | One evening I got an idea to make a simple laser data link using this semiconductor laser module and some kind of receiver. | | | For those interrested in faster laser link shoud take a look at the laser tranceiver project described at http://www.alphalink.com.au/~derekw/upntcvr.htm. | | | I started to test the system using computer. |
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http://www.tkk.fi/Misc/Electronics/circuits/laserlink.html
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| | Data Warehousing: A Look at Business Intelligence and Data Warehouse |
| | This Data Warehousing and Business Intelligence site aims to help people get a good high-level understanding of what it takes to implement a successful data warehouse project. | | | This section discusses business intelligence, as wellas the relationship between business intelligence and data warehousing. | | | - Business Intelligence: Business intelligence is closely related to data warehousing. |
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http://www.1keydata.com/datawarehousing/datawarehouse.html
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| | ECMWF Data Server |
| | Choose one of the links below to retrieve data from a given project. | | | A more comprehensive data set may be obtained from the ERA-40 project which is listed below. | | | You will find on this web server data from various projects hosted by ECMWF. |
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http://data.ecmwf.int/data
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| | UGS: Products: Tecnomatix |
| | Managing resource data - information on such assets as machine tools, fixtures, robots, welding guns and process templates - is a difficult challenge. | | | Without a data management solution as robust as in Tecnomatix, your manufacturing process will not operate at peak efficiency. | | | Tecnomatix Part Manufacturing is a managed environment of applications for creating process plans, managing and associating tools to that plan, optimizing tool behavior, and creating flexible reports targeted at part manufacture. |
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http://www.ugs.com/products/tecnomatix
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| | Data Match |
| | With Data Match, there are no upfront costs—and you pay only for the Data Match printouts you actually sell. | | | To see just how much fun students have with the Data Match fundraising program, watch our recent segment on CBS’s The Early Show. | | | As such, our program is designed to be fun, profitable and hassle-free. |
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http://www.data-match.com
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| | BUBL LINK: Chemical data |
| | Large searchable database of experimentally determined crystal structures, with details of graphical search, retrieval and data visualisation software. | | | Database of references on atomic spectral line broadening containing numerical data, comments, and review articles. | | | Author: Committee on Data for Science and Technology |
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http://bubl.ac.uk/link/c/chemicaldata.htm
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| | BUBL LINK: Geographical data |
| | Includes background to the project, a description of the database, the methodology used to create and define the dataset, an analysis of the projects result, and a facility to download the database. | | | Provides links to collections of resources, projects, programmes, software, online journals, and events. | | | A starting point for finding sources of digital geospatial data and attributes related to the US. |
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http://bubl.ac.uk/link/g/geographicaldata.htm
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| | Dr. John A. Shaw - EconData&Links |
| | In addition, when it was feasible the links in the table were chosen so the user has access to time series or data for other areas and to related data. | | | The document entitled BUSINESS and ECONOMIC NUMERIC DATA is an excellent place to seek additional data and sources. | | | Agricultural Trade This data is mostly in (.WK*) files. |
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http://zimmer.csufresno.edu/~johnsh/econ/econ_EDL.htm
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| | DATA BECKER - Software |
| | At DATA BECKER, the future of the software industry has already begun. | | | PDF Professional 2 Custom-made high-end PDF files with up to 4,800 dpi! |
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http://www.databecker.com
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| | High Level Data Link Control (HDLC) Protocol |
| | Each piece of data is encapsulated in an HDLC frame by adding a trailer and a header. | | | The header contains an HDLC address and an HDLC control field. | | | The HDLC protocol is a general purpose protocol which operates at the data link layer of the OSI reference model. |
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http://www.erg.abdn.ac.uk/users/gorry/course/dl-pages/hdlc.html
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| | Data Recovery Link 1-800-625-6451 |
| | We have spent 14 years building custom tools and machinery specifically designed to replace the delicate internal components of all kinds of storage devices. | | | For computer forensics services, please visit Computer Forensic Labs at | | | Though some local companies may advertise to provide data recovery services, be aware that they may only provide basic off-the-shelf software recoveries because walk-in clean rooms are very expensive investments. |
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http://www.datarecoverylink.com
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| | ITPRC - Data Link |
| | Ryan's Gigabit Network and Distributed Computing Home Page - Collection of links to research projects on gigabit networking | | | Gigabit Ethernet Links Page - IEEE's links to Gigabit Ethernet Information | | | FDDI - System Level Description - A detailed white paper on FDDI technology |
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http://www.itprc.com/datalink.htm
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| | Scientific Data, Surveillance, & Injury Statistics - NCIPC |
| | (Web-based Injury Statistics Query and Reporting System) is the Injury Center's interactive, online database that provides customized injury-related mortality data and nonfatal injury data. | | | NCIPC Guidelines for Implementing the CDC/ATSDR Policy on Releasing and Sharing Data | | | This data is useful for research and for making informed public health decisions. |
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http://www.cdc.gov/ncipc/osp/data.htm
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| | MODIS-Aqua Data Products |
| | Most of the files are in HDF-EOS format, while the Ocean binned and Level 4 products are in the native HDF4 format. | | | MODIS Level 1A and Level 1B data (Radiance counts, calibrated radiances and geolocation) | | | For more information on MODIS and its data products please see this MODIS Data Support or click on the MDST Home icon at the bottom of this page. |
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http://disc.gsfc.nasa.gov/data/dataset/MODIS-Aqua
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| | Raining Data - Home |
| | Pick Data Provider for.NET for the Microsoft.NET Framework | | | A comprehensive, server-based reporting solution that can author, manage, and deliver both paper-oriented and interactive, Web-based reports and allows access to your IBM UniVerse, IBM UniData and Pick D | | | Provides high-performance management and query of XML data by leveraging the time-proven Pick® Universal Data Model (Pick UDM). |
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http://www.rainingdata.com/index2.html
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| | Network Data Link Technology.net |
| | We are up to date on the most current software and hardware devices available in the market, as well as the upcoming technological advances. | | | For more information in this topic Click Here. | | | Network Data Link Technology is a company whose main focus is the future of technology. |
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http://www.ndl.net
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| | Welcome to IrDA |
| | IrDA currently has data rates up to 16 Mbit/s available with 100 Mbit/s data rates under development. | | | A definitive book on IrDA standards accessible to novices while delivering the most relevant technical details for experts. | | | If you are interested in working with this development, click here to |
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http://www.irda.org
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| | HDLC - High Level Data Link Control |
| | Data Communications, Computer Networks and Open Systems, by Fred Halsall 2. | | | The two basic functions in the protocol are link management and data transfer (which includes error and flow control). | | | Layer 2 of the OSI model is the data link layer. |
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http://www2.rad.com/networks/1994/hdlc/hdlc.htm
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| | Financial Data Finder |
| | Proceed here to the new interactive Financial Data Finder, where you can search our database of web sites targeted for finance researchers and scholars. | | | You can also use an old text based version of Financial Data Finder. |
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http://fisher.osu.edu/fin/osudata.htm
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| | The Data Link Layer |
| | Note: maximum thorughput is 18% of physical channel capacity | | | padding: used to insure data plus padding > 46 bytes | | | data link level addresses different from network layer addresses! |
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http://www-net.cs.umass.edu/cs653-1997/notes/ch7/ch7-1.htm
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| | Arrick Robotics --- OCI Wireless Data Link |
| | Data is packetized and checked for accuracy after transmission then resent if errors occur. | | | Includes 2 data links, cables, AC adapters, PC-based configuration software. | | | Parameters are set with PC-based software and retained in the unit. |
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http://www.robotics.com/oci.html
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| | Data Link Systems is a PLC Robot Systems Integrator for automation and information ... |
| | We utilize technology tools such as robots, programmable controllers (PLC's) and information systems tools such as database software and reporting tools to produce superior project results for our customers. | | | Data Link Systems is a PLC Robot Systems Integrator for automation and information systems. | | | We are an integrator using cad drafting programming by a programmer consultant including hmi scada control systems. |
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http://www.datalinksystems.com
(101 words)
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| | Texas LMI TRACER, Data Link |
| | Because of substantial methodology changes in geographic areas below the state level, data from 2005 and 2004 or earlier is not considered comparable. | | | Because of substantial methodology changes between 2004 and 2005 in estimating city unemployment statistics, Texas city data is not available prior to 2005. | | | Select area types and areas for which you would like to view the data |
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http://www.tracer2.com/cgi/dataanalysis/AreaSelection.asp?tableName=Labforce
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| | Data |
| | Files with authors or sources listed to the right of the link are available from the NBER or are otherwise associated with the NBER research program. | | | SEE ALSO NBER LINKS for other data series. | | | To find other data on the web, try Resources for Economists, new economic releases, Statistical Abstracts of the United States, Google, NBER papers. |
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http://www.nber.org/data
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| | NCSA data link |
| | Welcome to data link, your source for timely technical information about NCSA computational resources. | | | For further information, see "Writing the Book of the Universe." | | | Please note: There will be no January issue of data link. |
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http://www.ncsa.uiuc.edu/News/datalink
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| | Stats about all US cities - maps, race, income, photos, education, crime, weather, houses, etc. |
| | We've collected and analyzed data from numerous sources to create as complete and interesting profiles of all U.S. cities as we could. | | | If you ever need to research any city for any reason, from considering a move there to just checking where somebody you know is staying, this is the site for you. | | | Or browse by state (first link for each state is for cities with over 6000 residents, second is for smaller towns): |
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http://www.city-data.com
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| | Data Wales index and search page. |
| | The idea is to emulate the Parish Magazine (local history and local knowledge) rather than the Glossy Magazine (irrelevant ads and graphics). | | | Data Wales is written, illustrated and published here in Wales. | | | These are some links relating to notes of a more personal interest. |
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http://www.data-wales.co.uk
(539 words)
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| | Free Economic Data Economic, Financial, and Demographic Data |
| | Finding and downloading data has never been this fast, simple, or free! | | | Copyright © 2005 Economy.com, Inc. Reproduction and/or redistribution of material from any Economy.com pages without written permission is strictly prohibited. |
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http://www.freelunch.com
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| | Global Financial Data |
| | The files have also been reorganized to make the data more easily accessible. | | | Global Financial Data is an unparalled source for historical stock market, financial, and economic data unavailable from any other online source. | | | The Annual Files for GDP and Trade have been updated with data through 2004 for many of the countries. |
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http://www.globalfindata.com
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| | nada.org - National Automobile Dealers Association |
| | These PDF files require Adobe Acrobat Reader software to view (If you don’t have the Acrobat Reader, download here from the Adobe Web site). | | | NADA Data is published annually in the May issue of NADA's AutoExec magazine. | | | Download 2003 NADA Data report in key segments: |
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http://www.nada.org/Content/NavigationMenu/MediaCenter/NADAData/NADA_Data.htm
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| | Data Access and Storage Developer Center |
| | Microsoft Data Access Components (MDAC) 2.8 Start Page | | | JDBC 2005 Beta 2 Data Coercion [Angel-Saenz Badillos] | | | John Papa demonstrates several ways the Enterprise Library DAAB can be used to retrieve and modify data, how you can implement transactions with it, and how to set up NUnit to test your data access code. |
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http://msdn.microsoft.com/data/Default.aspx
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