Flashcards in Chapter 21: Network Troubleshooting Deck (20):
When a wire doesn't connect from end to end.
When a wire connects to another wire in the cable.
Wire Map Problem
When a wire doesn't connect to the proper place
When the electrical signal bleeds from one wire pair to another.
Tests voltage, resistance, and continuity
Tap into a 110-block to see if a line is working
Command to view and change the ARP table
Command used to display and edit the routing table.
Used to check the NetBIOS name cache and their corresponding IP addresses.
Displays info on your running IP processes
Shows the routing table
Used to look for unintentionally opened ports
Measure the data flow in a network
A popular port scanner
Divide and Conquer
Getting a general sense of where the problem lies, then starting from that layer of the OSI model
If a device is not discovering neighboring devices it may be....
DHCP or DNS issues
Concerning link aggregation, what could cause LACP to not initiate?
Both ports set to passive
Nonstop broadcast frames being sent onto the network.
No one can reach the rest of the network.
Routers loop traffic, causing them to respond slowly or not at all.
Huge amount of traffic on the links between the routers