Software that uses the services of a server in a network.
A program which is part of the operating system of a computer and controls part of the hardware of the computer.
Ethernet is a network system which has been standardized by the XEROX company. A differentiation is made between Thin Ethernet (which uses low-cost thin coaxial cable with a maximum length of approximately 185 m per network segment), and 10Base-T Ethernet, which uses standard telephone cable with a connector like a US telephone jack. Network cards for Thin Ethernet are usually provided with coaxial (BNC) connectors. Some network cards have connectors for more than one of these methods. Ethernet (see also
3.4 "Network topology") is logically characterized by a linear bus topology. However, nowadays the 10Base-T Ethernet and 100Base-T Ethernet - also called
Fast Ethernet - sport, from the physical point of view, a star-shaped topology. Fast Ethernet is similar to Ethernet but achieves data transfer rates of 100 Mbit/s (instead of 10 Mbit/s).
A program developed by HELIOS for AppleTalk networks. It allows among other things the sharing of hard disks (file server functionality) and printers (print server functionality), and uses the AppleTalk protocol and AppleShare IP for network communications.
The Fiber Distributed Data Interface (FDDI) is a network system based on fiber-optic cables. FDDI is characterized by very high speed and medium to high cost. It largely is immune to electromagnetic interference, which is an advantage in certain industrial situations.
The IEEE standard, which includes support for transmission rates of 1,000 megabits per second (Mbps) over an Ethernet network. The usual Ethernet standard supports only up to 100 Mbps. Compare
Ethernet, Fast Ethernet.
Private directory provided for each UNIX user. The home directory is the current directory as soon as you log in to a server.
In this manual, the UNIX computer on which the HELIOS software runs.
A cabling system which allows a number of devices such as workstations and printers to communicate with each other. Each device on the network can offer specific services, or be a user of services provided by other devices. For example, when a printer offers services to the network (the printing of documents), it can be used by any of the workstations on the network.
Network Information Service (NIS) is the formal term for the concept of "Yellow Pages", which is the former name of a UNIX utility, provided by SunSoft (Sun Microsystems system software), that maintains a central database of names and locations of the resources on a network. NIS enables processes on any node to locate resources by name.
A node is a data-link addressable entity on a network.
PCShare is a high-end TCP/IP-based file server and print server software for Windows computers which are attached to UNIX computers through Ethernet, Token Ring, etc. Since EtherShare is compatible with PCShare, Macintosh users can share network printers and files with Windows and UNIX users, too.
The
Portable Document Format (PDF) is an Adobe Acrobat file format that has been created for application independent file exchange. With the Acrobat Reader software - which can be installed from our CD-ROM or downloaded from the Adobe web site - you may read and print any given PDF document.
PostScript Printer Description (PPD), is a file format developed by Adobe Systems, Inc. PPD files contain information enabling software to produce the best results possible for each type of designated printer.
Primary Domain Controller (PDC)
1. In Windows NT, a database providing a centralized administration site for resources and user accounts. The database allows users to log onto the domain, rather than onto a specific host machine. A separate account database keeps track of the machines in the domain and allocates the domain's resources to users.
2. In any local area network, the server that maintains the master copy of the domain's user accounts database and that validates logon requests.
A standardized data format which allows workstations to communicate via a network.
A
Raster Image Processor (RIP) performs the final calculation of the data which are sent to the output device. The RIP may be either an external unit or part of the output device itself. A PostScript laser printer for example contains its RIP.
The top-most directory on a UNIX computer is called "root" directory. If you are logged in as "root", you can access all other directories and subdirectories on the system.
A program or hardware unit which interconnects two or more networks (or zones) in order to transfer data in a bidirectional way between them.
Software which provides services to a network, such as printing (print server) or the storage of files (file server).
A socket is an addressable entity within a node connected to a TCP/IP network. Sockets are owned by software processes known as socket clients.
A spooler is a set of programs which manage print jobs.
A spooler acts as a buffer for the files that have been sent to an output device. A spooler may also be called a "printer queue".
An Internet network is a virtual data network specification based on a packet-oriented protocol (
Internet Protocol = IP) which allows data to be transferred between otherwise incompatible networks. Thus, the Internet specification describes a hardware-independent data protocol that lies above the hardware protocol (such as Ethernet). The Internet protocol (IP), however, is only able to exchange data packets between computers. The
Transmission Control Protocol (TCP) extends this ability to allow processes to be addressed on the target computer and to improve the reliability of the inter-process communication. TCP/IP has been implemented by all major software and hardware providers.
A group of users working on a common project and sharing computer files, often over a local area network.
Any computer which is not used as a server connected to a network for example a Macintosh computer, or a PC-compatible computer.
