Networking & Security

A network administrator oversees computer networks to ensure that they function smoothly. A network consists of a grouping of computers that communicate with each other or a central computer known as a server, on which computer files, programs, and other information are stored. A network may be as small as two or three computers or as large as the Internet, the world's largest computer network.
Whereas a network technician or engineer designs and sets up the infrastructure for a computer network, a network administrator usually configures and manages an existing network. He or she may be responsible for customizing the network to an individual company's needs by connecting the necessary hardware and software to the network. Once the network is configured, the administrator adds computer programs, such as e-mail, that the company's employees use on a daily basis. A network administrator's work usually depends on the size of the network for which he or she is responsible. The smaller the network, the more duties a network administrator handles. For large networks, several individuals may perform different tasks related to the network. The administrator then monitors the performance of the network and troubleshoots any problems such as slow performance or network crashes. The administrator must also work with individual users who are having network problems that are not experienced by other users.
A security specialist is responsible for changing passwords periodically and updating security measures and procedures. Information security is one of the main concerns of businesses. By ensuring security, they are protecting the data of their clients as well as their own. Without any security, data loss might happen or worst, the data extracted could be used in identity theft which could destroy the reputation of the company. Providing full security to the network and its users is the job of the internet security professional.