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What Does Network Administrator Do?
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Network administrator has full rights and permissions to all resources on a network. The administrator is usually responsible for installing, managing, and controlling servers and networking components. Administrators can also modify the properties of user accounts and the membership of groups, create and manage printers, install printers, share resources and assign permissions to those resources. Database administrator is responsible for programming and maintaining a large multi-relational database in a networked environment and facilitating direct access to the database by individuals on the network. Workgroup manager is responsible for solving problems, implementing standards and solutions, reviewing performance, and facilitating the efficiency of a specific group of individuals who are connected to larger network environment. Support staff is responsible for providing technical assistance to the system administrator in large complex network environments, and providing routine problem-solving and spot training to end-users. Maintenance contractor is responsible for hardware repairs and upgrades. Webmaster is responsible for implementing and maintaining the content and style of the company's Internet site, keeping the information accurate, up-to-date, and interesting.
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The development of network technology is continuous up to present. The benefits of computer network are as follows:
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.Sharing information: the computer can help you centralize the information and maintain control over it if you select one computer to store the shared information and have all other computers reference the information on that computer over the network.
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.Sharing hardware resources: a network allows anyone connected to the network to use printers, fax/modem, scanners, tape backup units or almost any other device that can be attached to a computer.
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.Sharing software resources: administrator can centrally install and configure the software and also restrict access to the software. It is easier than doing it on every one of the computers in an organization.
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.Preserving information: a network also allows for information to be backed up to a central location. It is difficult to maintain regular backups on a number of stand-alone computers so important information can be lost easily by mistake or by accident.
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.Protecting information: a network provides a more secure environment for a company's important information than stand-alone computers. Networks provide an additional layer of security by way of passwords.
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.Electronic-mail (E-mail): the computer network can also help people communicate by E-mail.You can attach electronic documents to mail message like photo, sound and video clip.
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网络管理员对一个网络上的所有资源拥有完全占有权和许可权。网络管理员通常负责安装、管理、控制服务器和网络组件。网络管理员还可以修改用户账号的属性、工作组的成员资格，创建和管理打印机、安装打印机，共享资源以及为那些资源分配权限。数据库管理员负责在一个网络环境中编程和维护一个大型的多关系型数据库，并且为个人在网络上直接访问数据库提供便利。工作组管理员负责解决问题、实现标准和解决方案、检查性能以及提高连接到一个更大的网络环境的特定的一组人员的效率。维护人员负责为在大型复杂的网络环境中工作的系统管理员提供技术帮助，为终端用户提供常规问题解答和现场培训。维修承包商负责对硬件的维修和升级。Web站点管理员负责实现和维护公司Internet站点的内容和风格，保证网站信息正确、及时、有趣。
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至今网络技术仍然在继续发展。计算机网络的优越性如下。
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.共享信息：如果你选择一台计算机存储要共享的信息，并且使其他的所有计算机能够通过网络访问这些信息，那么这台计算机就能帮助你集中管理信息和对它进行维护控制。
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.共享硬件资源：一个网络允许任何一位连接到这个网络的用户使用打印机、传真／调制解调器、扫描仪、磁带备份设备或者几乎所有能够连接到计算机上的其他设备。
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.共享软件资源：系统管理员能够集中安装和配置软件，还可以限制对软件的访问。这比在一个机构中的每台计算机上都做这些事情要容易得多。
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.保存信息：一个网络还允许将信息备份到一个集中的位置上。在大量的单独的计算机上维护常规备份是很困难的，因此重要信息很容易因错误或意外而丢失。
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.保护信息：一个网络比单机可以为一家公司的重要信息提供更加安全的环境。通过密码网络提供了一个附加的安全层。
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.电子邮件（E-mail）：计算机网络还能通过电子邮件来帮助人们进行通信。可以将诸如相片、声音和视频剪辑等电子文档附加在邮件信息上。
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