From CyberNerdz Consulting Wiki
We use the term Information Technology or IT to refer to an entire industry. In actuality, information technology is the use of computers and software to manage information. In some companies, this is referred to as Management Information Services (or MIS) or simply as Information Services (or IS). The information technology department of a large company would be responsible for storing information, protecting information, processing the information, transmitting the information as necessary, and later retrieving information as necessary. Under this department are also two more specific and very important role in running a small business.
System Administrator, systems administrator, or sysadmin, is a person employed to maintain and operate a computer system and/or network. System administrators may be members of an information technology (IT) or Electronics and Communication Engineering department. Cybernerdz Consulting can provide retainer services on-call and tech phone support 24/7 as needed. This reduces your over-head expenses drastically without needing a full time System Admin for your SOHO.
The duties of a system administrator are wide-ranging, and vary widely from one organization to another. Sysadmins are usually charged with installing, supporting, and maintaining servers or other computer systems, and planning for and responding to service outages and other problems. Other duties may include scripting or light programming, project management for systems-related projects, supervising or training computer operators, and being the consultant for computer problems beyond the knowledge of technical support staff. To perform their job well, a system administrator must demonstrate a blend of technical skills and responsibility.
Network administrator is a person responsible for the maintenance of computer hardware and software that comprises a computer network. This normally includes deploying, configuring, maintaining and monitoring active network equipment. A related role is that of the network specialist, or network analyst, who concentrates on network design and security. This again is another service CyberNerdz Consulting specialize on with different service package contract depending on your business needs.
The network administrator (or "network admin") is usually the level of technical/network staff in an organization and will rarely be involved with direct user support. The network administrator will concentrate on the overall integrity of the network, server deployment, security, and ensuring that the network connectivity throughout a company's LAN/WAN infrastructure is on par with technical considerations at the network level of an organization's hierarchy.