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| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Bachelor/CCNA4/en_CCNA4_v30/ch2/2_2_8/content.html | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch2/2_2_8/content.html')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch2/2_2_8/content.html | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_2_8/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_2_8/content.html new file mode 100644 index 0000000..8e11a56 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_2_8/content.html @@ -0,0 +1,126 @@ +<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns="http://www.w3.org/TR/REC-html40">
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+
+
+
+<title>Content</title>
+<base target="_self">
+</head>
+
+<body background="../../images/bg.gif" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0" onLoad="window.focus();" link="#808080" vlink="#808080" alink="#808080">
+
+<table border="0" cellpadding="0" cellspacing="0" width="100%">
+ <tr>
+ <td bgcolor="#336666" width="18" valign="top">
+ <img border="0" src="../../images/content_lines.gif" width="16" height="25">
+ <img border="0" src="../../images/transdot.gif" width="2" height="1"></td>
+ <td bgcolor="#336666"><b><font face="Arial" size="2" color="#FFFFFF">2.2</font></b></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%">
+ <strong><font face="Arial" size="2" color="#FFFFFF">WAN Technologies</font></strong></td>
+ <td width="9" bgcolor="#336666"> </td>
+ </tr>
+ <tr>
+ <td bgcolor="#669999" height="25" width="18"> </td>
+ <td bgcolor="#669999" height="25"><b><font face="Arial" size="2" color="#FFFFFF">
+ 2.2.8</font></b></td>
+ <td bgcolor="#669999"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#669999" height="25" width="100%">
+ <strong><font face="Arial" size="2" color="#FFFFFF">Cable modem</font></strong></td>
+ <td bgcolor="#669999" height="25" width="9"> </td>
+ </tr></table>
+
+<table border="0" cellpadding="0" cellspacing="0" width="95%" bordercolor="#111111">
+
+ <tr>
+ <td width="15"></td>
+ <td>
+ <font face="Arial" size="2">Coaxial cable is
+ widely used in urban areas to distribute television signals.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"> Network
+ access is available from some cable television networks. This allows
+ for greater bandwidth than the conventional telephone local loop.
+ </font>
+ <p><font face="Arial" size="2">Enhanced cable modems enable two-way,
+ high-speed data transmissions using the same coaxial lines that
+ transmit cable television. Some cable service providers are promising data speeds up
+ to 6.5 times that of T1 leased lines. This speed makes cable an
+ attractive medium for transferring large amounts of digital
+ information quickly, including video clips, audio files, and large
+ amounts of data. Information that would take two minutes to download
+ using ISDN BRI can be downloaded in two seconds through a cable modem
+ connection. </font></p>
+ <p><font face="Arial" size="2">Cable modems provide an always-on
+ connection and a simple installation. An always-on cable
+ connection means that connected computers are vulnerable to a security
+ breach at
+ all times and need to be suitably secured with firewalls. To address
+ security concerns, cable modem services provide capabilities for using
+ Virtual Private Network (VPN) connections to a VPN server, which is
+ typically located at the corporate site. </font></p>
+ <p><font face="Arial" size="2">A cable modem is capable of delivering
+ up to 30 to 40 Mbps of data on one 6 MHz cable channel. This is almost
+ 500 times faster than a 56 Kbps modem.</font></p>
+ <p><font face="Arial" size="2">With a cable modem, a subscriber can
+ continue to receive cable television service while simultaneously
+ receiving data to a personal computer. This is
+ accomplished with the help of a simple one-to-two splitter.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"></font></p>
+ <p><font face="Arial" size="2">Cable modem subscribers must use the
+ ISP associated with the service provider. All the local subscribers
+ share the same cable bandwidth. As more users join the service, available
+ bandwidth may be below the expected rate.
+ <img border="0" src="../../images/3.gif" align="absmiddle" width="12" height="12">
+ -
+ <img border="0" src="../../images/5.gif" align="absmiddle" width="12" height="12"></font></p>
+ <TABLE bgcolor="#B0AFAF" width="95%" border="0" cellspacing="0" cellpadding="0">
+ <TR>
+ <TD valign="top">
+ <TABLE bgcolor="#669999" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD width="5">
+ <img border="0" src="../../images/lab_toplft.gif" width="116" height="23"></TD>
+ <TD><IMG alt="" height="1" width="3" src="../../images/s.gif"></TD><TD align="right" valign="top">
+ <IMG alt="" src="../../images/corner_ur_7.gif" width="7" height="7"></TD>
+ </TR>
+ </TABLE>
+
+ <TABLE bgcolor="#B0AFAF" width="100%" cellspacing="0" cellpadding="0" border="0">
+ <TR>
+ <TD>
+ <TABLE width="100%" cellpadding="2" cellspacing="0" border="0" bordercolor="#111111">
+ <TR>
+ <TD bgcolor="#ffffff" width="15"> </TD>
+ <TD bgcolor="#ffffff"><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><font color="#808080">
+ <a href="javascript:void(0)" onClick="window.open('../../activities/ch02/activity_2_2_8.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');">
+ <img border="0" src="../../images/media_icon.gif" width="25" height="25"></a> <b>
+ <a onClick="window.open('../../activities/ch02/activity_2_2_8.html','Interactivity','width=740,height=390,toolbar=0,resizable=yes,scrollbars=0,screenX=26,screenY=38,left=26,top=38');" href="javascript:void(0)">Interactive Media Activity</a></b></font></p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#808080">
+ <p>Checkbox: WAN Technologies Cable Modems</p>
+ <p>Upon completing this activity, the student
+ will be able to identify the characteristics associated with
+ cable modems.</p>
+ </font><font FACE="Arial" SIZE="2" COLOR="#000000">
+ <p><IMG alt="" height="2" width="1" src="../../images/s.gif"></p></TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+ </TD>
+ </TR>
+ </TABLE>
+
+
+ <p>
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
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