Network Troubleshooting Chapter 21 Flashcards
What does nslookup do?
Command line tool, used to query DNS servers manually for specific records. Used when a tech needs to see if a DNS record even exists and confirm its value.
Define Time-Domain Reflectometer (TDR)
Advanced cable tester, test lengths of cables and their continuity or their discontinuity and identifies the location of any discontinuity due to a bend break unwanted crimp and so on
Define Optical Time-Domain Reflectometer (OTDR)
Tester for Fiber Optic Cable that determines continuity and reports the location of cable breaks.
Define a Certifier
Device that test the cable to ensure it can handle its rated amount of capacity.
Define Voltage Event Recorder
Tracks voltage over time by plugging into a power outlet
AKA Voltage Quality Recorder
Define Protocol Analylizer
Tool that monitors the different protocols running at different layers on the network and that can give application session network and datalink layer information on every frame going through a network.
Define Cable Stripper
Device that enables the creation of UTP cables
Define Multimeter
Tool for testing voltage (AC/DC) resistance and continuity
Define Toner
Generic term for two devices used together - a tone generator and a tone locater (probe) - to trace cables by sending an electrical signal along a wire at a particular frequency. The tone locater then emits a sound when it distinguishes that frequency. AKA Fox and Hound
Define punch down tool
Specialized tool for connecting UTP wires to a 110-block
AKA 110-Punchdown Tool
Define Wiremap
Test for cooper cables that checks not only for continuity but also that all the wires on both ends of the cable connect to the right spot. Also picks up shorts and crosswires.
Define a Fiber Light Meter
Device that measures the intensity of light pulses within or at the terminal ends of fiber optic cables.
Define Hostname (command)
Command line tool that returns the hostname of the computer its run on
Define TraceRT (also TraceRoute) (Command)
Command line utility used to follow the bath a packet takes between too hosts
Define ipconfig (command)
Command line utility for windows that displays current TCP IP configuration of the machine
MAC (ifconfig)
Linux (ip)