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| A static image of a system's (or network's) performance when all elements are known to be working properly. |
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| A command-line utility for Linux servers and workstations that displays the current TCP/IP configuration of the machine |
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| The command-line utility used to display the current TCP/IP configuration on the local computer and to modify the DHCP addresses assigned to each inteface. |
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| A multitasking electronic measuring instrument which typically includes features like the ability to measure voltage, current and resistance. |
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| A command-line utility used to examine the sockets-based connections open on a given host. |
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| Software run on a host that gathers packets and analyzes them. |
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Term
Ping
(Packet Internet Groper) |
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Definition
| Term for a small network message (ICMP ECHO)sent by a computer to check for the presence and responsiveness of another. also used to verify the presence of another system. |
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| Time-Domain Reflectormeter |
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Definition
| A tool that sends out a signal and measures how much time it takes to return. It is used to find short or open circuits. |
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| Utility commonly used to locate failures along a TCP/IP communication path by tracing the route from origin to destination. Each route interface encountered is echoed to the screen along with some statistical information about the path timing. |
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| A form of bandwidth optimization that works by delaying packets that meet a certain criteria to guarantee usable bandwidth for other applicants. |
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| Digital connections leased from the telephone company. The connection type is denoted by the letter T plus a number and is an indication of throughput. |
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| Network Software Diagnostics |
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Definition
| Software tools,either protocol analyzers or performance monitoring tools,used to troubleshoot network problems. |
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Definition
| A software and hardware troubleshooting tool that is used to decode protocol information to try to determine the source of a network problem and to establish baselines. |
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| The amount of time the system is up and accessible to end-users. |
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| The technologies that work to deliver voice communications over the internet or other data networks. It many cases it can include voice and vide applications. |
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| The tool used to install twisted pair cabling into patch panels and wiring closets. It forces the wire down into the insulation displacement connector. |
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| A virus that alters the code in the MBR of a hard drive. Once a machine is booted, the virus will reside in the memory and attempt to infect other systems. |
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| A virus that attacks executable applications and system program files, such as those ending in .com, .exe. and .d11. |
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| A specially written macro that performs the same functions as a virus. These macros normally auto start within the application is run and then make copies of themselves, often propagation across the network. |
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Definition
| A type of virus that can reproduce itself, is self-contained and doesn't need a host application to be transported. |
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| Used to perform test of phone and network lines. Generator a tone to assist in the identification of the wire being checked. |
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| A program that enters a system or network under the guise of another program. Often may be included as an attachment or as part of an installation program.. |
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| A program that can make a copy of itself without you necessarily being aware of it; some viruses can destroy or damage files, and generally the best protection is always to maintain backups of your files. |
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| The command-line utility that allows you to query a name server to see which IP Address a name resolves to. |
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Definition
| The command-line utility used to view, modify and configure a host's routing table. |
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