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<html> <head> <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"> var pageLoaded = false; var current = ''; var currentChapter = 'knet-v214aCH47501'; 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_pf.html"'); } function PrevPage() { top.currentSupport--; if (top.currentSupport <= 0) { returnContent(); } else { if (top.firstSupportPage == top.contentResourceID) { returnContent(); } else if (top.prevPage == quizID) { launchQuiz(); } else { launchReview(); } } } function launchReview(reviewID) { top.currentSupport = 0; chapterID = "knet-v214aCH47501"; nbparams = "CHAPID="+chapterID+"/RLOID="+"knet-v214aRLO47520"+"/RIOID="+reviewID; dash = chapterID.indexOf('-'); sub1 = chapterID.substring(0,dash); sub2 = chapterID.substring(dash+1); ContentRef = "../../../../../"+ nbparams +"/"+ sub1 +"/"+ sub2 +"/"; //alert(ContentRef); eval('top.frames.main_frame.location.href="'+ContentRef+'pageframesetrio.html"'); //added for navigating between Quiz and Review and back to regular Chapter pages top.currentSupport++; top.firstSupportPage = reviewID; top.prevPage = reviewID; top.contentResourceID = ''; } function launchQuiz(quizID) { top.currentSupport = 0; chapterID = "knet-v214aCH47501"; nbparams = "CHAPID="+chapterID+"/RLOID="+"knet-v214aRLO47524"+"/RIOID="+"knet-v214aRIO120878"; dash = chapterID.indexOf('-'); sub1 = chapterID.substring(0,dash); sub2 = chapterID.substring(dash+1); ContentRef = "../../../../../"+ nbparams +"/"+ sub1 +"/"+ sub2 +"/"; //alert(ContentRef); eval('top.frames.main_frame.location.href="'+ContentRef+'pageframesetrio.html"'); //added for navigating between Quiz and Review and back to regular Chapter pages top.currentSupport++; top.firstSupportPage = quizID; top.prevPage = quizID; top.contentResourceID = ''; } function returnContent() { rioID = top.currentPage; rloID = top.currentRLO; ContentID = top.currentChapter; top.firstSupportPage = ''; top.prevPage = ''; top.contentResourceID = ''; top.currentSupport = 0; nbparams = "CHAPID="+ContentID+"/RLOID="+rloID+"/RIOID="+rioID; dash = ContentID.indexOf('-'); sub1 = ContentID.substring(0,dash); sub2 = ContentID.substring(dash+1); ContentRef = "../../../../../"+ nbparams +"/"+ sub1 +"/"+ sub2 +"/" eval('top.frames.main_frame.location.href="'+ContentRef+'pageframesetrio.html"'); } </script> </head> <body leftmargin="20" topmargin="10" marginwidth="30" marginheight="10" bgcolor="#FFFFFF" onLoad="window.focus();" background="../../../../../images/ccna/common/lab/bglab.gif"> <table bgcolor="#000000" cellspacing="0" width="100%" border="0"> <tr> <td width="100%"> <table cellpadding="4" cellspacing="1" width="100%" border="0"> <tr> <td width="10%" bgcolor="#FFFFFF" valign="top"> <table cellpadding="0" cellspacing="0" width="100%" border="0"> <tr> <td width="33%"><script language="JavaScript"> //if (parent.parent.getTopName() == "chapterframeset") //{ var imgSource = '../../../../../images/ccna/common/lab/labback.gif'; document.write('<a href="javascript:PrevPage();">'); document.write('<img src="' + imgSource + '" border="0">'); document.write('</a>'); //} </script></td><td width="33%"><img border="0" src="../../../../../images/ccna/common/icon4.gif"></td> </tr> </table> <p> </p> </td><td bgcolor="#FFFFFF" valign="top"> <p align="left"> <span class="resourceTitle">Lab 1.3.6 Binary Numbering</span> </p><p class="smtext">Estimated time: 30 min.</p><p align="left"> <span class="resourceSectionTitle">Objectives:</span> </p> <blockquote> <p class="smtext">This lab will focus on your ability to accomplish the following tasks:</p> <span class="smtext"> <ul type="disc"><li>Identify the positions in a binary number and know the value of each</li><li>Identify the positions in a decimal number and know the value of each</li><li>Work with Base 10 exponents (powers of 10) and understand how position defines value</li><li>Work with Base 2 exponents (powers of 2) and understand how position defines value</li><li>Manually convert simple binary numbers and decimal numbers</li><li>Manually convert 32-bit binary IP addresses and dotted decimal IP addresses</li><li>Use the Windows Scientific Calculator to check your answers (go to the View Menu in the calculator window and select the Scientific option)</li><li>Describe the differences between binary and decimal numbering systems</li></ul> </span> </blockquote><p align="left"> <span class="resourceSectionTitle">Background:</span> </p> <blockquote> <p class="smtext">This lab will help you learn to work with the binary numbering system. You will convert binary numbers (Base 2) to decimal numbers (Base 10) and decimal to binary. Computers and networking equipment such as routers work with binary numbers, a series of BITS (short for Binary Digits), which are either ON (a binary 1) or OFF (a binary 0). They are encoded internally in the PC and on networking media (cables) as either electrical voltages on copper cable such as Unshielded Twisted Pair (UTP) or as light pulses on fiber cable. The current version of the Internet Protocol (IPv4) uses a 32-bit address (usually divided into four "octets" or 8-bit bytes) to identify a particular network and a host on that network. Humans are more comfortable working with decimal numbers, so IP addresses are usually written as four decimal numbers separated by periods (dots), each representing an octet, to make them easier to read. This is referred to as "dotted decimal notation". Understanding binary numbers and how they relate to decimal numbers is critical to understanding IP addresses, subnets and network routing.</p> </blockquote><p align="left"> <span class="resourceSectionTitle">Tools / Preparation:</span> </p> <blockquote> <p class="smtext">This is primarily a written lab exercise but you will use the Windows Scientific Calculator so you will need access to a PC. You may want to refer back to Lab 1.2.1.1 -- TCP/IP Network Settings for some real IP addresses to convert. The following resources will be required:</p> <span class="smtext"> <ul type="disc"><li>PC workstation with Windows operating system (Win 95, 98, NT, or 2000) installed on PC and access to the Windows Calculator.</li></ul> </span> </blockquote><p align="left"> <span class="resourceSectionTitle">Notes:</span> </p> <blockquote> <p class="smtext"> <img border="0" src="../../../../../CHAPID=knet-v214aCH47501/RLOID=knet-v214aRLO47520/RIOID=knet-v214aRIO125207/knet/v214aclixsi144/line450.gif" width="450" height="1"></p> <p class="smtext">⌨️ 快捷键说明
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