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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/ch6/6_1_4 | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/buttons.html | 107 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/content.html | 135 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/index.html | 29 | ||||
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/media.html | 21 |
4 files changed, 292 insertions, 0 deletions
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/buttons.html b/Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/buttons.html new file mode 100644 index 0000000..afbcbd5 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch6/6_1_4/buttons.html @@ -0,0 +1,107 @@ +<html>
+
+<head>
+
+
+
+<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
+<meta http-equiv="Content-Language" content="en-us">
+
+
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+<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";
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+ 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";
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+ image5on.src = "../../images/quiz_ov.gif";
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+ 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";
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+ 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('ch6');">
+ <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('ch06');">
+ <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 href="../../ch6/6_1_3/index.html" target="main" onMouseOver="changeImages('image3', 'image3on'); changeImages('hint', 'image3hint');" onMouseOut="changeImages('image3', 'image3off'); changeImages('hint', 'imageHint');">
+ <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 href="../../ch6/6_1_5/index.html" target="main" onMouseOver="changeImages('image4', 'image4on'); changeImages('hint', 'image4hint');" onMouseOut="changeImages('image4', 'image4off'); changeImages('hint', 'imageHint');">
+ <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>
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+
+<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">6.1</b></font></td>
+ <td bgcolor="#336666"><img border="0" src="../../images/transdot.gif" width="10" height="1"></td>
+ <td bgcolor="#336666" width="100%"><b><font face="Arial" size="2" color="#FFFFFF">
+ <b>Workstations and Servers</b></font></b></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">6.1.4</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">Introduction to NOS</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 size="2" face="Arial">A computer operating system (OS) is the
+ software foundation on which computer applications and services run on
+ a workstation. Similarly, a network operating system (NOS) enables
+ communication between multiple devices and the sharing of resources
+ across a network. A NOS operates on UNIX, Microsoft Windows NT, or
+ Windows 2000 network servers.
+ <img border="0" src="../../images/1.gif" align="absmiddle" width="12" height="12"></font><p>
+
+ <font face="Arial" size="2">Common functions of an OS on a workstation
+ include controlling the computer hardware, executing programs and
+ providing a user interface. The OS performs these functions for a
+ single user. Multiple users can share the machine but they cannot log
+ on at the same time. In contrast, a NOS distributes functions over a
+ number of networked computers. A NOS depends on the services of the
+ native OS in each individual computer. The NOS then adds functions
+ that allow access to shared resources by a number of users
+ concurrently. </font></p>
+ <p>
+
+ <font size="2" face="Arial">Workstations function as clients in a NOS
+ environment. When a workstation becomes a client in a NOS environment,
+ additional specialized software enables the local user to access
+ non-local or remote resources, as if these resources were a part of
+ the local system. The NOS enhances the reach of the client workstation
+ by making remote services available as extensions of the local
+ operating system. </font></p>
+ <p>
+
+ <font face="Arial" size="2">A system capable of operating as a NOS
+ server must be able to support multiple users concurrently. The
+ network administrator creates an account for each user, allowing the
+ user to logon and connect to the server system. The user account on
+ the server enables the server to authenticate that user and allocate
+ the resources that the user is allowed to access. Systems that provide
+ this capability are called multi-user systems.</font></p>
+ <p>
+
+ <font face="Arial" size="2">A NOS server is a multitasking system,
+ capable of executing multiple tasks or processes at the same time. The
+ NOS scheduling software allocates internal processor time, memory, and
+ other elements of the system to different tasks in a way that allows
+ them to share the system resources. Each user on the multi-user system
+ is supported by a separate task or process internally on the server.
+ These internal tasks are created dynamically as users connect to the
+ system and are deleted when users disconnect.</font></p>
+ <p>
+
+ <font face="Arial" size="2">The main features to consider when
+ selecting a NOS are performance, management and monitoring tools,
+ security, scalability, and robustness or fault tolerance. The
+ following section briefly defines each of these features.
+ <img border="0" src="../../images/2.gif" align="absmiddle" width="12" height="12"></font></p>
+ <p>
+
+ <font size="2" face="Arial"><b>Performance</b><br>
+ A NOS must perform well at reading and writing files across the
+ network between clients and servers. It must be able to maintain fast
+ performance under heavy loads, when many clients
+ are making requests. Consistent performance under heavy demand is an
+ important standard for a NOS.</font></p>
+ <p>
+
+ <font size="2" face="Arial"><b>Management and monitoring</b><br>
+ The management interface on the NOS server provides the tools for
+ server monitoring, client administration, file, print, and disk
+ storage management. The management interface provides tools for the
+ installation of new services and the configuration of those services.
+ Additionally, servers require regular monitoring and adjustment.</font></p>
+ <p>
+
+ <font size="2" face="Arial"><b>Security</b><br>
+ A NOS must protect the shared resources under its control. Security
+ includes authenticating user access to services to prevent
+ unauthorized access to the network resources. Security also performs
+ encryption to protect information as it travels between
+ clients and servers.</font></p>
+ <p>
+
+ <font size="2" face="Arial"><b>Scalability</b><br>
+ Scalability is the ability of a NOS to grow without degradation in
+ performance. The NOS must be capable of sustaining performance as new
+ users join the network and new servers are added to support them.</font></p>
+ <p>
+
+ <font size="2" face="Arial"><b>Robustness/fault tolerance</b><br>
+ A measure of robustness is the ability to deliver services
+ consistently under heavy load and to sustain its services if
+ components or processes fail. Using redundant disk devices and
+ balancing the workload across multiple servers can improve NOS
+ robustness.</font></p>
+ <p><font face="Arial" size="2"> </font>
+ </td>
+ </tr>
+ </table>
+
+</body>
+
+</html>
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+
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+ <frame name="navigation" scrolling="no" marginwidth="0" marginheight="0" noresize src="buttons.html" target="self">
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+
+ </body>
+ </noframes>
+</frameset>
+
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+<head>
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+
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+<title>Flash Graphic</title>
+</head>
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