diff options
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/buttons.html | 110 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/content.html | 115 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/index.html | 29 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/media.html | 21 |
4 files changed, 275 insertions, 0 deletions
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/buttons.html b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/buttons.html new file mode 100644 index 0000000..4b75757 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/buttons.html @@ -0,0 +1,110 @@ +<html>
+
+<head>
+
+
+
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+<meta http-equiv="Content-Language" content="en-us">
+
+
+
+<title>New Page 1</title>
+<script language="JavaScript" src="../../javascript/buttons.js"></script>
+
+
+<script language="JavaScript">
+
+<!--
+
+if (document.images) {
+ image1on = new Image();
+ image1on.src = "../../images/index_ov.gif";
+
+ image2on = new Image();
+ image2on.src = "../../images/glossary_ov.gif";
+
+ image3on = new Image();
+ image3on.src = "../../images/back_ov.gif";
+
+ image4on = new Image();
+ image4on.src = "../../images/next_ov.gif";
+
+ image5on = new Image();
+ image5on.src = "../../images/quiz_ov.gif";
+
+ image1off = new Image();
+ image1off.src = "../../images/index_up.gif";
+
+ image2off = new Image();
+ image2off.src = "../../images/glossary_up.gif";
+
+ image3off = new Image();
+ image3off.src = "../../images/back_up.gif";
+
+ image4off = new Image();
+ image4off.src = "../../images/next_up.gif";
+
+ image5off = new Image();
+ image5off.src = "../../images/quiz_up.gif";
+
+ image1hint = new Image();
+ image1hint.src = "../../images/menu_index.gif";
+
+ image2hint = new Image();
+ image2hint.src = "../../images/menu_glossary.gif";
+
+ image3hint = new Image();
+ image3hint.src = "../../images/menu_back.gif";
+
+ image4hint = new Image();
+ image4hint.src = "../../images/menu_next.gif";
+
+ image5hint = new Image();
+ image5hint.src = "../../images/menu_quiz.gif";
+
+ imageHint = new Image();
+ imageHint.src = "../../images/menu_up.gif";
+}
+
+function changeImages() {
+ if (document.images) {
+ for (var i=0; i<changeImages.arguments.length; i+=2) {
+ document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
+ }
+ }
+}
+
+// -->
+</script>
+
+
+<base target="_self">
+
+
+</head>
+
+<body bgcolor="#cccccc" topmargin="0" leftmargin="0" marginheight="0" marginwidth="0">
+
+<table border="0" cellpadding="0" cellspacing="0" height="48" width="100%" style="border-collapse: collapse" bordercolor="#111111">
+ <tr>
+ <td bgcolor="#336666" width="100%" height="48" align="right"><font color="#FFFFFF" size="2" face="Arial"><b> </b></font>
+ <img name="hint" border="0" src="../../images/menu_up.gif" width="136" height="19"></td>
+ <td bgcolor="#336666" align="left" height="48"><a onMouseOver="changeImages('image1', 'image1on'); changeImages('hint', 'image1hint');" onMouseOut="changeImages('image1', 'image1off'); changeImages('hint', 'imageHint');" href="javascript:openIndex('ch2');">
+ <img name="image1" border="0" src="../../images/index_up.gif" width="31" height="48"></a></td>
+ <td bgcolor="#336666" align="left" height="48"><a onMouseOver="changeImages('image5', 'image5on'); changeImages('hint', 'image5hint');" onMouseOut="changeImages('image5', 'image5off'); changeImages('hint', 'imageHint');" href="javascript:openQuiz('ch02');">
+ <img name="image5" border="0" src="../../images/quiz_up.gif" width="31" height="48"></a></td>
+ <td bgcolor="#336666" align="left" height="48"><a href="javascript:openGlossary();" onMouseOver="changeImages('image2', 'image2on'); changeImages('hint', 'image2hint');" onMouseOut="changeImages('image2', 'image2off'); changeImages('hint', 'imageHint');">
+ <img name="image2" border="0" src="../../images/glossary_up.gif" width="31" height="48"></a></td>
+
+ <td bgcolor="#336666" valign="middle" align="left" height="48">
+ <a target="main" onMouseOver="changeImages('image3', 'image3on'); changeImages('hint', 'image3hint');" onMouseOut="changeImages('image3', 'image3off'); changeImages('hint', 'imageHint');" href="../2_3_2/index.html">
+ <img name="image3" border="0" src="../../images/back_up.gif" width="30" height="48"></a></td>
+ <td bgcolor="#336666" width="100%" valign="middle" height="48">
+ <a target="main" onMouseOver="changeImages('image4', 'image4on'); changeImages('hint', 'image4hint');" onMouseOut="changeImages('image4', 'image4off'); changeImages('hint', 'imageHint');" href="../2_3_4/index.html">
+ <img name="image4" border="0" src="../../images/next_up.gif" width="30" height="48"></a></td>
+ <td height="48"><img border="0" src="../../images/menu_bar.gif" width="15" height="48"></td>
+ </tr>
+</table>
+
+</html>
\ No newline at end of file diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/content.html b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/content.html new file mode 100644 index 0000000..d06aba9 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/content.html @@ -0,0 +1,115 @@ +<html>
+
+<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"><font face="Arial" size="2" color="#FFFFFF"><b>2.</b></font><b><font face="Arial" size="2" color="#FFFFFF">3</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 Design</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">
+ 2.3.3</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%">
+ <font size="2" color="#FFFFFF"><b><span style="font-family: Arial">How to
+ identify and select networking capabilities</span></b></font></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">Designing a WAN essentially consists of
+ the following:</font><ul>
+ <li><font face="Arial" size="2">Selecting an interconnection pattern
+ or layout for the links between the various locations</font></li>
+ <li><font face="Arial" size="2">Selecting the technologies for those
+ links to meet the enterprise requirements at an acceptable cost</font></li>
+ </ul>
+ <p><font face="Arial" size="2">Many WANs use a star topology. As the
+ enterprise grows and new branches are added, the branches are connected
+ back to the head office, producing a traditional star topology.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"> Star
+ end-points are sometimes cross-connected, creating a mesh or partial
+ mesh topology.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"> This
+ provides for many possible combinations for interconnections. When
+ designing, re-evaluating, or modifying a WAN, a
+ topology that meets the design requirements must be selected.
+ <img border="0" src="../../images/3.gif" align="absmiddle" width="12" height="12"></font></p>
+ <p><font face="Arial" size="2">In selecting a layout, there are several
+ factors to consider. More links will increase the cost of the network
+ services, and having multiple paths between destinations increases
+ reliability. Adding more network devices to the data path will increase
+ latency and decrease reliability. Generally, each packet must be completely received at one
+ node before it can be passed to the next. A range of dedicated
+ technologies with different features is available for the data links.
+ <img border="0" src="../../images/4.gif" align="absmiddle" width="12" height="12"></font></p>
+ <p><font face="Arial" size="2">Technologies that require the establishment of a connection before data
+ can be transmitted, such as basic telephone, ISDN, or X.25, are not
+ suitable for WANs that require rapid response time or low latency. Once
+ established, ISDN and other dialup services are low latency, low jitter
+ circuits. ISDN is often the application of choice for connecting a small
+ office or home office (SOHO) network to the enterprise network,
+ providing reliable connectivity and adaptable bandwidth. Unlike cable
+ and DSL, ISDN is an option wherever modern telephone service is
+ available. ISDN is also useful as a backup link for primary connections
+ and for providing bandwidth-on-demand connections in parallel with a
+ primary connection. A feature of these technologies is that the
+ enterprise is only charged a fee when the circuit is in use.</font></p>
+ <p><font face="Arial" size="2">The different parts of the enterprise may
+ be directly connected with leased lines, or they may be connected with
+ an access link to the nearest point-of-presence (POP) of a shared
+ network. X.25, Frame Relay, and ATM are examples of shared networks.
+ Leased lines will generally be much longer and therefore more expensive
+ than access links, but are available at virtually any bandwidth. They
+ provide very low latency and jitter.</font></p>
+ <p><font face="Arial" size="2">ATM, Frame Relay, and X.25 networks carry
+ traffic from several customers over the same internal links. The
+ enterprise has no control over the number of links or hops that data
+ must traverse in the shared network. It cannot control the time data
+ must wait at each node before moving to the next link. This uncertainty
+ in latency and jitter makes these technologies unsuitable for some types
+ of network traffic. However, the disadvantages of a shared network may
+ often be outweighed by the reduced cost. Because several customers are
+ sharing the link, the cost to each will generally be less than the cost
+ of a direct link of the same capacity.</font></p>
+ <p><font face="Arial" size="2">Although ATM is a shared network, it has
+ been designed to produce minimal latency and jitter through the use of
+ high-speed internal links sending easily manageable units of data,
+ called cells. ATM cells have a fixed length of 53 bytes, 48 for data and
+ 5 for the header. ATM is widely used
+ for carrying delay-sensitive traffic. Frame Relay may also be used for
+ delay-sensitive traffic, often using QoS mechanisms to give priority to
+ the more sensitive data.</font></p>
+ <p><font face="Arial" size="2">A typical WAN uses a combination of technologies that are usually chosen
+ based on traffic type and volume. ISDN, DSL, Frame Relay, or
+ leased lines are used to connect individual branches into an area. Frame Relay, ATM, or
+ leased lines are used to connect external areas back to the backbone.
+ ATM or leased lines form the WAN backbone.</font></p>
+ <p><font face="Arial" size="2"> </font>
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
\ No newline at end of file diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/index.html b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/index.html new file mode 100644 index 0000000..82a25be --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/index.html @@ -0,0 +1,29 @@ +<html>
+
+<head>
+
+<title>Cisco Global Learning Network</title>
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+
+</head>
+
+<frameset cols="490,301" framespacing="0" border="0" frameborder="0" marginheight=0 marginwidth=0 topmargin=0 leftmargin=0>
+ <frameset rows="100%,48">
+ <frame name="graphics" scrolling="no" marginwidth="0" marginheight="0" src="media.html">
+ <frame name="bottom" scrolling="no" marginwidth="0" marginheight="0" src="../../navigation.html" target="contents">
+ </frameset>
+ <frameset rows="100%,48">
+ <frame name="content" scrolling="yes" marginwidth="0" marginheight="0" target="_self" src="content.html">
+ <frame name="navigation" scrolling="no" marginwidth="0" marginheight="0" noresize src="buttons.html" target="self">
+ </frameset>
+
+ <noframes>
+ <body>
+
+ <p>This page uses frames, but your browser doesn't support them.</p>
+
+ </body>
+ </noframes>
+</frameset>
+
+</html>
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/media.html b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/media.html new file mode 100644 index 0000000..ea223d1 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_3/media.html @@ -0,0 +1,21 @@ +<html>
+
+<head>
+
+
+
+<title>Flash Graphic</title>
+</head>
+
+<body bgcolor="#FFFFFF" topmargin="1" leftmargin="1">
+<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
+ codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
+ WIDTH="100%" HEIGHT="100%">
+ <PARAM NAME=movie VALUE="../../flash/ch02/2_3_3.swf"> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=#FFFFFF>
+ <EMBED src="../../flash/ch02/2_3_3.swf" quality=high bgcolor=#FFFFFF WIDTH="100%" HEIGHT="100%" TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer"></EMBED></OBJECT>
+
+
+
+</body>
+
+</html>
\ No newline at end of file |