Assessments - 3, GPA: 4.7
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FastConnect The OfficeConnect Remote’s proprietary connection protocol that allows fast connection between units either over the ISDN link or over a permanent leased line WAN link. Fiber optics A technology that uses laser light pulses, sent over thin glass fibres, which is able to deliver data at speed up to several gigabits per second. File server A computer running a special operating system that allows workstations to access files. Filter A configuration that removes types of data frames based on user-entered parameters. Firewall A method of preventing unauthorized access to a network or a host on a network. A firewall is usually implemented within a router’s software. Gateway Another name for a router on a network. HDLC High-level Data Link Control. OSI’s bit orientated protocol. Hop count The number of routing nodes between a source and destination device on a LAN or WAN. Host A device or computer on an IP network to which you can connect. Hub A cabling centre in a star topology that either amplifies a signal and transmits it (active hub) or simply passes the signal along (passive hub) . Hyperterminal The terminal emulation program provided with Microsoft Windows 95 ™ . IEEE The Institute of Electronic and Electrical Engineers. IPX Internetwork Packet Exchange, the default data packet protocol for Novell’s NetWare operating system. ISDN Integrated Services Digital Network. A multi-channel digital end-to-end telecommunications network that provides a virtually error free transmission of data. ISO International Standards Organization. Refer to Open Systems Interconnection. Kbps A measurement of data transmission speed in kilo bits per second. Keep alives A message sent by one network device to inform another network device that the virtual circuit between them is still active. LAN Local area network, a network that covers a group of local workstations and peripherals that require to share information. Learn A bridge learns addresses received at any of its interfaces and adds them to its filter address table. MAC Medium access control, a protocol for determining which device has access to the network at any one time. Mbps A measurement transmission megabits per second. MAN Metropolitan area network, a network that covers a city. MIB Management information base. NETBIOS Network Basic Input/Output System, a standard for supporting network communications that is independent of the underlying network transport type. NetWare Novell’s Network Operating System (NOS) line. Network A method of connecting computers and other devices together with cabling so that they can communicate with each other. NIC Network interface card, an expansion card that enables a PC to communicate on a network. Network layer The third layer of the OSI reference model. This layer is responsible for controlling message traffic. NFS A network file system developed by Sun Microsystems for shared files a UNIX platform. Node An alternative name for a computer or device (such as a printer or modem) that is connected to a network. NOS Network operating system. OSI Open Systems Interconnection, a body of standards set by the International Standards Organization to define the activities that must occur when computers communicate. There are seven layers, and each contains a specific set of rules to follow at that point in the communication. PAP Password Authentication Protocol. Part of the PPP protocol to ensure authentication of the connection between two devices. Peer-to-peer network A network which contains workstations which are able to act as both client and client servers. Piggyback A way of transmitting routing information over ISDN lines by adding it to valid data frames. This avoids ISDN calls being generated solely for passing routing Polling A method of controlling terminals on a multi-point network where each device is interrogated, in turn, to determine if the device is ready to receive or transmit data. PPP Point-to-Point Protocol. The de facto standard protocol for routing between devices made by different manufacturers. Presentation layer The sixth layer of the OSI network layer model. This layer controls the formatting and translation of data. Protocol A set of rules and procedures that govern the exchange of data between two communicating systems. PSTN Public switched telephone network. Quick Configuration A set of menu driven forms in the management to configure the unit for most of ISDN connection. REN Ringer equivalence number. RIP Routing information protocol. Router A protocol transparent device that links networks. A router can be used to separate unwanted traffic on either side of the bridge, reduce the traffic, or to provide security from unauthorized users. SAP Source address protocol. Segment A section of an Ethernet network, typically connected by repeater or a bridge to another segment. SPX Sequenced Packet Exchange, Novell’s guaranteed-delivery version of IPX. Session A logical connection between two communicating ...
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