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<html>    <head>        <meta content="en-us" http-equiv="Content-Language">        <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">        <link type="text/css" rel="stylesheet" href="../../../../../css/ccna.css">        <script src="../../../../../js/framesetHelper.js" language="JavaScript"></script><script language="JavaScript">        window.scrollTo(0,0);        function newPage(pageID) {            alert("COMMING SOON!!\nThis feature is currently in development.");        }        function launchMoreInfo(oid) {            dash = oid.indexOf('-');            sub1 = oid.substring(0,dash);            sub2 = oid.substring(dash+1);                                            // this is an URL base on the                                        // system that generated the static                                        // download of the curriculum.            httpref = "http://nomar.sdf.cisco.com/servlet/org.cli.delivery.rendering.servlet.MIServlet/Static=true,LMSID=DTUI,Engine=dynamic,Theme=cnamstheme,Style=ccna,Language=en,Version=2,RootID=knet-v214aCV47051/CHAPID=null/RLOID=null/RIOID=null/";                        newref = httpref + sub1 +"/"+ sub2 +"/moreinfoframeset.html";            //alert("new newref :\n" + newref);            window.open(newref,'MoreInfo','toolbar=no,status=yes,menubar=no,location=no,scrollbars=yes,height=442,width=756,left=20,top=20,resizable=yes')        }        function launchContentResource(contentID) {            top.currentSupport = 0;                        dash = contentID.indexOf('-');            sub1 = contentID.substring(0,dash);            sub2 = contentID.substring(dash+1);                        numbackParams = "CHAPID=" + "knet-v214aCH47506" + "/RLOID=" + "knet-v214aRLO47663" + "/RIOID=" + "knet-v214aRIO121284";                        ContentRef = "../../../../../"+ numbackParams + "/"+ sub1 +"/"+ sub2 +"/";                        eval('parent.frames.content_frame.location.href="'+ContentRef+'content.html"');            eval('parent.frames.media_frame.location.href="'+ContentRef+'media.html"');            eval('parent.frames.navigation_frame.location.href="'+ContentRef+'contentresourcenav.html"');            top.currentSupport++;            top.firstSupportPage = contentID;            top.prevPage = contentID;            top.contentResourceID = contentID;        }                        function launchReference(rioID, rloID, chapterID)        {            contentID = "knet-v214aCV47051";            dash = contentID.indexOf('-');            sub1 = contentID.substring(0,dash);            sub2 = contentID.substring(dash+1);                        numbackParams = "CHAPID=" + chapterID + "/RLOID=" + rloID + "/RIOID=" + rioID;                        ContentRef = "../../../../../"+ numbackParams + "/"+ sub1 +"/"+ sub2 +"/";        			            eval('top.frames.main_frame.location.href="'+ContentRef+'referencecontroller_crf.html"');                        chapter = "knet-v214aCH47506";            ch_dash = chapter.indexOf('-');            ch_sub1 = chapter.substring(0,ch_dash);            ch_sub2 = chapter.substring(ch_dash+1);                        params = "CHAPID=" + chapter + "/RLOID=" + "knet-v214aRLO47663" + "/RIOID=" + "knet-v214aRIO121284";                        returnRef = "../../../../../"+ params + "/"+ ch_sub1 +"/"+ ch_sub2 +"/pageframeset.html";                                    top.prevPage = returnRef;                }        function launchFile(filepath) {              newWindow = window.open(filepath,"","top=70,left=120,width="+(screen.width*.50)+",height="+(screen.height*.50)+",resizable=yes,scrollbars=yes,toolbar=yes,menubar=yes,status=yes");            /*            if (is.ie && filepath.lastIndexOf(".pdf") != -1) {                pageTimer = setInterval("winLoadCheck()", 1000);            }            */        }        function winLoadCheck() {            if (newWindow.document.readyState == 'complete') {                           clearInterval(pageTimer);                newWindow.location.reload();            }        }          // BrowserCheck Object  // provides most commonly needed browser checking variables  // 19990326  // Copyright (C) 1999 Dan Steinman  // Distributed under the terms of the GNU Library General Public License  // Available at http://www.dansteinman.com/dynapi/  function BrowserCheck() {  	var b = navigator.appName  	if (b=="Netscape") this.b = "ns"  	else if (b=="Microsoft Internet Explorer") this.b = "ie"  	else this.b = b  	this.v = parseInt(navigator.appVersion)  	this.ns = (this.b=="ns" && this.v>=4)  	this.ns4 = (this.b=="ns" && this.v==4)  	this.ns5 = (this.b=="ns" && this.v==5)  	this.ie = (this.b=="ie" && this.v>=4)  	this.ie4 = (navigator.userAgent.indexOf('MSIE 4')>0)  	this.ie5 = (navigator.appVersion.indexOf('MSIE 5.0')>0)  	this.ie55 = (navigator.appVersion.indexOf('MSIE 5.5')>0)  	if (this.ie5) this.v = 5  	this.min = (this.ns||this.ie)  }  // automatically create the "is" object  is = new BrowserCheck()</script>    </head>    <body onLoad="window.focus();" alink="#000000" vlink="#000000" link="#000000" bgcolor="#E7E7E7" background="../../../../../images/ccna/common/bg.gif">        <table width="100%" cellspacing="0" cellpadding="2" border="0"><tr>                <td bgcolor="#000000"><img height="1" width="2" border="0" src="../../../../../images/ccna/common/transdot.gif"></td><td class="rlohdr"><img height="1" width="2" border="0" src="../../../../../images/ccna/common/transdot.gif"></td><td valign="top" class="rlohdr">6.1</td><td width="100%" class="rlohdr">                    <table width="90%" cellpadding="0" cellspacing="0" border="0">                        <tr>                            <td class="rlohdr">LAN Standards</td>                        </tr>                    </table>                </td>            </tr>            <tr>                <td bgcolor="#000000"><img height="1" width="2" border="0" src="../../../../../images/ccna/common/transdot.gif"></td><td class="riohdr"><img height="1" width="2" border="0" src="../../../../../images/ccna/common/transdot.gif"></td><td valign="top" class="riohdr">6.1.5</td><td width="100%" class="riohdr">                    <table width="90%" cellpadding="0" cellspacing="0" border="0">                        <tr>                            <td class="riohdr">MAC sublayer</td>                        </tr>                    </table>                </td>            </tr>            <tr>                <td colspan="4">                    <table width="90%" cellspacing="0" cellpadding="0" border="0">                        <tr>                            <td class="smtext">                                <p>                                </p><table cellpadding="0" cellspacing="0" width="100%" border="0" xmlns:java="http://xml.apache.org/xslt/java">                                    <tr>                                        <td width="100%"><img height="10" width="1" border="0" src="../../../../../images/ccna/common/transdot.gif"></td>                                    </tr>                                    <tr>                                        <td width="100%">                                            <table bgcolor="#000000" bordercolor="#000000" cellspacing="0" bordercolorlight="#000000" width="100%" border="0">                                                <tr>                                                    <td width="100%">                                                        <table bgcolor="#FFFFFF" cellspacing="0" cellpadding="2" width="100%" border="0">                                                            <tr>                                                                <td valign="middle"><img height="22" width="22" border="0" src="../../../../../images/ccna/common/inotes.gif"></td><td valign="middle"><span class="cstitle">Instructor Note</span></td>                                                            </tr>                                                            <tr>                                                                <td valign="top">&nbsp;</td><td valign="top"><span class="cstext">                                                                        <p>This target indicator is far more concrete. If we are going to have multiple computers accessing the networking, then some provision for orderly access to that medium must be made. This is the job of the Media Access Control, or MAC, sublayer.</p>                                                                    </span></td>                                                            </tr>                                                        </table>                                                    </td>                                                </tr>                                            </table>                                        </td>                                    </tr>                                </table><p>The Media Access Control (MAC) sublayer deals with the protocols that a host follows in order to access the physical media.</p><table cellpadding="0" cellspacing="4" width="63%" border="0" xmlns:java="http://xml.apache.org/xslt/java">                                    <tr>                                        <td valign="middle" width="8%"><img height="23" width="23" src="../../../../../images/ccna/common/icon2.gif"></td><td valign="middle" width="92%"><span class="cstitle">Web Links</span></td>                                    </tr>                                    <tr>                                        <td valign="middle" width="8%">&nbsp;</td><td valign="middle" width="92%"><span class="smtext"><a target="_blank" href="http://cs.nmhu.edu/osimodel/datalink/">Layer 2 - The Data Link Layer</a></span></td>                                    </tr>                                    <tr>                                        <td valign="middle" width="8%">&nbsp;</td><td valign="middle" width="92%"><span class="smtext"><a target="_blank" href="http://www.100vg.com/white/mac.htm">The Media Access Control (MAC) Sublayer Functions</a></span></td>                                    </tr>                                </table></td>                        </tr>                    </table>                </td>            </tr></table>        <p>        </p>        <table width="100%" cellspacing="0" cellpadding="2" border="0" valign="bottom">            <tr>                <td></td>            </tr>        </table>    </body></html>

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