Network Troubleshooting Ch.19

Question 1

Copper Cabling issues

Answer 1

incorrect termination/bad wiring/bad connector,crosstalk,

attenuation/DB loss/distance limitation

Question 2

Fiber cable issues

Answer 2

fiber type mismatch

dirty connectors; connector mismatch; bend radius limitations; distance limitations, wavelength mismatch

Question 3

Wireless issues

Answer 3

interference; device saturation/bandwidth saturation; simultaneous wired/wireless connections; configurations (incorrect encryption; incorrect, overlapping, or mismatched channels; incorrect frequency/incompatibilities; essid mismatch; wireless standard mismatch; untested updates); distance/signal strength/power levels; latency; bounce; incorrect antenna or switch

Question 4

Probable causes to network issues

Answer 4

port speed
port duplex mismatch
mismatched MTU 
incorrect VLAN
Incorrect IP settings such as IP, gateway, mask

Question 5

Issues that likely require escalation

Answer 5

switching loops, 
missing routes, 
routing loops, 
routing problems MTU black hole, 
bad modules, 
proxy ARP, broadcast storms, 
NIC teaming misconfiguration, 
power failure/ power anomalies.