2025-01-07T21:25:29+03:00[Europe/Moscow] en true What are 5 options to test in the event of no network connectivity?, What are 5 potential causes of intermittent wireless connectivity?, What are 4 predictable sources of wireless interference?, What is a common unpredictable source of wireless interference?, How can you measure signal integrity?, Which is better: high or low SNR?, What should you check if windows says there is limited or no connectivity?, What is jitter?, What is the most common cause of poor VoIP quality?, What is port flapping?, How should you resolve port flapping? flashcards
CompTIA A+ Core 1: Troubleshooting Networks

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