Back
Flashcards: CompTIA A+ Core 1: Troubleshooting Networks
What are 5 options to test in the event of no network connectivity?
Check the link light, ping loopback (127.0.0.1), ping the local IP, ping the default gateway, ping devices on the router’s side
What are 5 potential causes of intermittent wireless connectivity?
Interference, signal strength, incorrect channel, bounce latency (interference from physically intersecting channels), incorrect access point placement
What are 4 predictable sources of wireless interference?
Fluorescent lights, microwaves, cordless telephones, high-voltage sources
What is a common unpredictable source of wireless interference?
Living in a multiple tenant building
How can you measure signal integrity?
Signal to noise ratio (SNR) or using a performance monitor
Which is better: high or low SNR?
High
What should you check if windows says there is limited or no connectivity?
Check the APIPA and ping the local gateways
What is jitter?
Packet loss during real-time communication that causes jumps or stutters in the feed
What is the most common cause of poor VoIP quality?
Insufficient network resources, VoIP requires high speeds and low latency
What is port flapping?
Intermittent shutdowns or disconnections of the network interface
How should you resolve port flapping?
Verify the integrity of the cables, change switch interfaces, replace any malfunctioning components