In the client/server model, what roles do client computers and server computers play?
A client/server network is a system where one or more computers called clients connect to a central computer named a server to share or use resources. Each client computer must use an operating system that allows it to be identified to participate in the network. A computer network is referred to as client/server if (at least) one of the computers is used to "serve" other computers referred to as "clients". Besides the computers, other types of devices can be part of the network:
In a client/server environment, each computer still holds (or can still hold) its (or some) resources and files. Other computers can also access the resources stored in a computer, as in a peer-to-peer scenario. One of the particularities of a client/server network is that the files and resources are centralized. This means that a computer, the server, can hold them and other computers can access them. Since the server is always ON, the client machines can access the files and resources without caring whether a certain computer is ON. One of the consequences of a client/server network is that, if the server is turned OFF, its resources and sometimes most of the resources on the network are not available. In fact, one way to set up a client/server network is to have more than one server. In this case, each server can play a different role. Another big advantage of a client/server network is that security is created, managed, and can highly get enforced. To access the network, a person, called a user must provide some credentials, such as a username and a password. If the credentials are not valid, the user is prevented from accessing the network. The client/server type of network also provides many other advantages such as centralized backup, Intranet capability, Internet monitoring, etc. In a small network, all these services can be handled by one server:
In a medium to large network, there can be many servers with each performing a different task:
In these series of lessons, we will build a Microsoft Windows network (I love Linux and Apple but at the time of this writing, I want to make lessons simple by dealing with only a simple network; normally, you can connect a Linux workstation, such as Novell SUSE Linux, to a Microsoft Windows network; this is extremely easy to do; based on my experience, there is nothing significant to do; once the network is setup and you connect the Linux workstation to the network, the Linux computer will find everything on the network; the Linux OS is so intelligent it would take care of everything). If you purchase new computers in a store or from a web store, the computers will most likely have an operating system. At the time of this writing, most computers sold in stores have Microsoft Windows 7 Home Premium. Some other computers, such as netbooks, run Microsoft Windows 7 Starter. For our network, we will use Microsoft Windows 7 Professional, Ultimate, or Enterprise. Microsoft Windows 7 Home Premium cannot join a domain-based network (but it can participate in a peer-to-peer network). If the computer(s) you are planning to use for your network doesn't (don't) have the Microsoft Windows 7 Professional, Microsoft Windows 7 Ultimate, or Microsoft Windows 7 Enterprise operating system, you must upgrade it. Among the ways you can acquire the upgrade, you can purchase it from a computer store or a web store. Another option is to get an MSDN subscription. If you have built your own computer(s) or you acquired (a) "barebone" computer(s), once it's ready with the necessary hardware parts, you must acquire and install the operating system.
A new installation of operating system (OS) is suitable if:
To perform a new installation:
At the time of this writing, most computers sold in stores run Microsoft Windows 7 Home Premium. In fact, if you just go a computer store and decide to purchase computers for your network, that's the operating system the computer may have. If you already have one (or more) computer(s) that you plan to use as workstation(s), it (they) may be running a previous operating system such as Microsoft Windows XP or Windows Vista. If you purchased a regular computer in a store, it may run Microsoft Windows 7 Home Premium. For our network, we will use Microsoft Windows 7 Professional, Ultimate, or Enterprise. Microsoft Windows 7 Home Premium cannot join a domain-based network (but it can participate in a peer-to-peer network). If the computer(s) you are planning to use for your network doesn't (don't) have one of those operating systems, you should upgrade it. Among the ways you can acquire the upgrade, you can purchase it from a computer store or a web store. Another option is to get an MSDN subscription. To upgrade from Microsoft Windows 7 Home Premium to Microsoft Windows 7 Professional, Ultimate, or Enterprise:
</td> </tr> </table></div> <div align="center"> <table border="0" width="900"> <tr> <td width="680" rowspan="2"> <span name="KonaBody"> <table border="0" width="100%" cellspacing="0" cellpadding="0"> <tr> <td width="100%"> <p class="paratitle">Server Operating System Installation</p> </td> </tr> <tr> <td width="100%" bgcolor="#FF0000" height="1"></td> </tr> </table> <table border="0" width="100%" cellspacing="0" cellpadding="0"> <tr> <td width="100%"> <p class="subtitle">Introduction</p></td> </tr> <tr> <td width="100%" height="1" bgcolor="#0000FF"></td> </tr> </table> <p class="parajust">A client server network is a system where a computer named a server is used to provide resources to other computers named clients. A server is a computer that can participate in a client/server network to hold resources and items that other computers would need:</p> <p class="pcenter"><img border="0" src="https://www.functionx.com/illustrations/network4.gif" width="283" height="217"></p> <p class="parajust">A server is primarily a regular computer. To create a client/server network, first identify the computer that you will use as the server. You can use an existing computer or purchase a new one. When planning the server, if you plan to use one of your (existing) computers as the server, check its hardware and make sure it meets the necessary hardware requirements.</p> <p class="parajust">If you have a computer with no operating system because either you got/built it ("barebone"�) without an operating system or you bought a server that came without an operating system (or you removed the operating system for example by formatting the hard drive or you created two or more partitions on the hard drive)), make sure it meets the necessary hardware requirements.</p> <p class="parajust">You will also need a monitor attached to the server. If you will not work closely with the server, that is, if you will not "watch" the server all day long, the type of monitor you connect to it may not be important. A monitor that can handle a 1024 x 768 resolution will be fine.</p> <table border="0" width="100%" cellspacing="0" cellpadding="0"> <tr> <td width="100%"> <p class="subtitle"> Server Operating System</p></td> </tr> <tr> <td width="100%" height="1" bgcolor="#0000FF"></td> </tr> </table> <p class="parajust"> As its name implies, the role of a server is to serve. To perform this job, it must be loaded with a special operating system (OS), such as Microsoft Windows Server 2008. That's the one we will use.</p> <p class="parajust"> If you already have a computer that has an operating system whose version is lower than the one you want to use (Microsoft Windows Server 2008), you may have to upgrade it. Otherwise, you may have to get the OS and install it. You may have a computer with an operating system but that OS cannot be upgraded into Microsoft Windows Server 2008.</p> <p class="parajust">To get an operating system, you have many options:</p><ul> <li> You can purchase a computer that has the operating system already. In this case, if you order the computer from a web store, you must indicate that you want it to have the OS already, which would be installed by the manufacturer</li> <li> You can acquire and install the OS. You can purchase the OS from the operating system publisher (either buy the OS from Microsoft or purchase an MSDN Subscription), from a software dealer, or a web store</li> </ul> <p class="parajust"> To install Microsoft Windows Server 2008:</p> <ol type="a"> <li>Start the computer. You may receive a message stating that the operating system is missing or something like that</li> <li>Open the DVD drive</li> <li>Put the disc in the drive, and close it</li> <li>Restart the computer. You should receive a message stating <b> Press Any Key To Boot From CD or DVD</b></li> <li>Press any key to start the installation.<br> (If your computer already has an operating system, start it. Open the DVD drive, put the DVD in it, and close its door. If the operating system cannot be upgraded, a message box and display and let you know)</li> <li>At one time, a window will come up, asking you to select the language. Click the desired language, such as My Language is English<br> <br> <img alt="Language Selection" height="374" src="https://www.functionx.com/networking/windows/language2.gif" width="500"></li> <li>The next screen will display details of the selected language:<br> <br> <img alt="Language Selection" height="375" src="https://www.functionx.com/networking/windows/language1.gif" width="500"><br> <br>Click Next</li> <li>Click Install Now<br> <br> <img alt="Install Now" height="374" src="https://www.functionx.com/networking/windows/in1.gif" width="500"></li> <li>The next screen will ask what version of the operating system you want to install. For our example, we click Windows Server 2008 R2 Server Enterprise with Service Pack 1<br> <br> <img alt="Operating System Version" height="381" src="https://www.functionx.com/networking/windows/version1.gif" width="500"></li> <li>To continue, click Next</li> <li>The next screen will show the Microsoft Software License Terms. Read it. Since it is long, to navigate up and down, you can press Page Up or Page Down. After reading it, if you accept the terms of the license, click I Accept The License Terms<br> <br> <img alt="Microsoft Software License Terms" height="350" src="https://www.functionx.com/networking/dlgboxes/license1.gif" width="500"></li> <li>Click Next.<br>If you don't like what it says, press ESC and stop the installation.</li> <li>The next screen asks you to upgrade or perform a new installation. For our example, we will perform a new installation<br> <br> <img alt="New Installation or Upgrade" height="395" src="https://www.functionx.com/networking/dlgboxes/installation1.gif" width="500"></li> <li>The next screen asks you to select the partition you want to use to install the operating system. In most cases, you should create partitions. For example, if you have only one partition but it is large and you want to create various partitions, click it to select it. Then, click New. A spin button will diplay, allowing you to decrease or manage the size(s) of the partition(s). When you reach the desired size, click Apply. You can also format a partition as necessary. If you do, make sure you use NTFS</li> <li>After creating the partitions, select the partition you want to use<br> <br> <img alt="Partition Selection" height="401" src="https://www.functionx.com/networking/dlgboxes/partition1.gif" width="500"></li> <li>Click Next<br> <br> <img alt="Copying Files" height="384" src="https://www.functionx.com/networking/dlgboxes/installation2a.gif" width="500"><br> <br> <img alt="Copying Files" height="381" src="https://www.functionx.com/networking/dlgboxes/installation2b.gif" width="500"><br> <br> <img alt="Copying Files" height="380" src="https://www.functionx.com/networking/dlgboxes/installation2c.gif" width="500"></li> <li>The installation will start copying files. This may take a while.<br> When the installation has finished copying the files, it will reboot</li> <li>When the computer reboots, it may display a message to Press Any Key to Boot From CD or DVD. Don't press any key.<br>The installation will perform new operations about Completing Installation.<br>When it has finished Completing Installation, the computer may reboot.<br> The next screen asks you to set the administrator's password:<br> <br> <img alt="Password" height="380" src="https://www.functionx.com/networking/windows/password1.gif" width="500" border="1"><br> <br>Click OK</li> <li>Type the password</li> <li>Press Tab to access the other text box and type the same password<br> <br> <img alt="Password" height="377" src="https://www.functionx.com/networking/windows/password2.gif" width="500" border="1"></li> <li>Click the right-pointing button or press Enter<br> </li> <li>A message will tell you that Your Password Has Been Changed.<br> <br> <img alt="Password" height="376" src="https://www.functionx.com/networking/windows/password3.gif" width="500" border="1"><br> <br> Click OK</li> <li>When asked to login, press Ctrl + ALT + DELETE<br> <br> <img alt="Password" height="375" src="https://www.functionx.com/networking/windows/password4.gif" width="500" border="1"></li> <li>Enter the password and press Enter</li> </ol> </span></td> <td> <table border="0" width="100%"> <tr> <td width="100%"> </td> </tr> </table> <table border="0" width="100%" cellspacing="0" cellpadding="0" height="106"> <tr> <td width="100%" height="15"> <p class="titlenote">:: Note</p> </td> </tr> <tr> <td width="100%" bgcolor="#0000FF" height="1"></td> </tr> <tr> <td width="100%" height="73"> <p class="paranote"> If you are planning to use a lot of Microsoft products, you should consider getting an MSDN subscription. You can get more information from <a href="http://msdn.microsoft.com/" target="_blank" class="notelink">msdn.microsoft.com</a>. Do a search on MSDN Subscription.</p></td> </tr> </table> </td> </tr> <tr> <td style="text-align:center"> <table border="0" width="100%"> <tr> <td width="100%" align="center"> </td> </tr> </table> </td> </tr> </table></div> <div align="center"> <table border="0" width="900"> <tr> <td width="100%" align="center"> <script type="text/javascript"><!-- google_ad_client = "pub-3968514660870014"; google_ad_width = 728; google_ad_height = 90; google_ad_format = "728x90_as"; google_ad_type = "image"; google_ad_channel =""; //--> Bài Viết Liên QuanQuảng CáoCó thể bạn quan tâmToplist được quan tâm#2
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