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25 Cards in this Set
- Front
- Back
A static image of a system's (or network's) performance when all elements are known to be working properly.
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Baseline
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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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IFconfig
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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 interface.
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IPconfig
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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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Multi-meter
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A command-line utility used to examine the sockets-based connections open on a given host.
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Netstat
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Software run on a host that gathers packets and analyzes them.
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Packet Sniffer
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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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Ping (Packet Internet Groper)
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A tool that sends out a signal and measures how much time it takes to return. It is used to find short open circuits.
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Time-Domain Reflectormeter
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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 router interface encountered is echoed to the screen along with some statistical information about the path timing.
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Tracert
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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 applications.
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Traffic Shaping
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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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T-Series Connections
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Software tools, either protocol analyzers or performance monitoring tools, used to troubleshoot network problems.
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Network Software Diagnostics
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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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Protocol Analyzers
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The amount of time the system is up and accessible to end-users.
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Uptime
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The technologies that work to deliver voice communications over the internet or other data networks. It may cases it can include voice and vide applications.
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VoIP
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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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Punch-down Tool
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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 memory and attempt to infect other systems.
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Boot Sector Virus
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A virus that attacks executable application and system program files, such as those ending in .com, .exe, and .dll.
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File Virus
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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 propagating across the network.
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Macro Virus
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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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Worm
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Used to perform tests of phone and network lines. Generates a tone to assist in the identification of the wire being checked.
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Tone Generator
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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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Trojan Virus
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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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Virus
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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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NSLOOKUP
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The command-line utility used to view, modify and configure a host's routing table.
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Route
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