Shared Flashcard Set

Details

N10-006 4.0
Net+ Troubleshooting
34
Computer Networking
Intermediate
03/05/2018

Additional Computer Networking Flashcards

 


 

Cards

Term
Width of networking equipment rack
Definition
19"
Term
Used to measure height in an equipment rack
Definition
U (1.75")
Term
110block advantages over the 66block
Definition
Less Crosstalk
Can exceed 10Mbps
Term
Any two stands of bare copper touching.
Definition
Short
Term
Any broken wires in a your cabling.
Definition
An Open
Term
Wiring error where two wires of a twisted pair are instead connected using two wires from different pairs and can cause crosstalk
Definition
Split pair
Term
Multimeter on each end of a cable, showing infinite Ohms
Definition
No connection, as opposed to 0Ohms which signals a connection
Term
Testing for crosstalk on the same end of cable
Definition
Near end cross talk (NEXT)
Term
Testing for crosstalk at the other end of the cable
Definition
Far end cross talk (FEXT)
Term
These can cause _______
Broken cables / Open connections
SFP/GBIC (s)
Dirty connector
Connector mismatch
Definition
Signal loss/Degradation
Term
Plugging a singlemode into a switch that expects multimode or viceversa
Definition
cable or fiber mismatch
Term
Plugging a 1310nm wavelength into a switch that expects 1530
Definition
wavelength mismatch
Term
Controls how multiple network devices send and receive data as a single connection
Definition
LACP Link aggregation control protocol
Term
Used to extend a cable past its distance limitations
Definition
Coupler
Term
Test a cable to ensure it can handle its rated amount of capactity
Definition
Certifier
Term
Save the amount of light loss in fiber optic cable
Definition
Optical Power Meter / Light Meter
Term
Monitors protocols running on different layers of the network (commonly 2-7 excluding presentation)
Definition
Protocol Analyzer
Term
Used to locate particular cables from a mess of cables
Definition
Tone Probe AND Tone Generator
Term
Format for adding an IP to the arp table
Definition
arp -s IP MAC
Term
Ping sent using frames on the same network rather than with ICMP
Definition
Arping
Term
Command to view a systems local routing table
Definition
route print / netstat -r
Term
Windows only command for displaying other systems on your windows network
Definition
nbtstat (-n)
Term
Displays current state information on running IP processes
Definition
netstat (-r)
Term
Checks and logs the state of all ports on a network, used to fix vulnerabilities or even by hackers to find them
Definition
Port scanner (nmap is a popular port scanning tool)
Term
7 Steps of troubleshooting method
Definition
Identify
Establish theory of probable cause
Test theory to determine cause
Establish plan of action
Implement plan of action
Verify full system functionality
Document findings
Term
Explain NIC teaming misconfiguration in a LACP setup
Definition
2 or more NICs all set in (Passive/Passive)

(Active/Passive) or (Active/Active) would work fine
Term
Acronym:
VRRP
HSRP
Definition
Virtual Router Redundancy Protocol
Hot Standby Router Protocol (Cisco)
Term
Explain PMTU
Definition
Path MTU Discovery
Sends a set size ICMP with a (DF) Dont fragment header if it fails it decreases size and sends again until it works to fine the max/best MTU size. Routers that block ICMP will not cooperate with PMTU making the router a MTU black hole
Term
Network appliance configured incorrectly, some or all data is blocked or sent out a wrong interface
Definition
Interface misconfiguration
Term
-Every activity light on nodes are solid
-Computers on other broadcast domains work
-Every computer under one broadcast domain cant connect to eachother

These are symptoms of ________
Definition
Broadcast storm
Term
After a router learns a route through a certain interface it will not communicate that route out the same interface
Definition
Split Horizon
Term
-Huge amounts of traffic between routers
-Usually caused by static routes
Symptoms of ____ ___
Definition
Routing Loop
Term
Most VPN concentrators also hold ___ ___ information so that remote VPN clients can truly behave as if they were on the LAN
Definition
Proxy ARP
Term
IEEE 1905.1
Definition
Creates a networking hybrid mesh of Wifi Ethernet MoCA and powerline (HomePlug IEEE1901)
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