11.9.3 Troubleshooting Flashcards
Identifying Methods to apply
Localhost (127.0.0.1) checks ?
Checks if the computer can communicate internally with itself, ensuring the basic network settings are good.
Pinging the device’s IP address :?
checks if the computer’s actual connection to the network is working properly.
What is the first step to take when troubleshooting network issues?
The first step is to verify that the network cable is plugged into the computer, wall jack, and network switch.
What tool can you use to check if a network cable is working properly?
A cable tester is used to verify if the network cable is functioning properly.
How do you troubleshoot slow network speeds?
First, verify that the network infrastructure supports the network speed, check for malware, update network adapter drivers, and ensure the network adapter is in full-duplex mode.
What is a common cause of high latency, and how can it be resolved?
Port flapping is a common cause of high latency. It can be resolved by reseating the network cable, moving it to another switch port, or replacing the cable.
What can cause interference in a wireless network?
External devices transmitting at the same radio frequency can cause interference.
How can weak wireless signals be improved?
You can improve weak wireless signals by moving the wireless access point, adding a network extender, or performing a site survey to detect weak spots.
What is the acceptable level of latency for VoIP systems?
Experts advise that 150 milliseconds one way is the maximum acceptable level of latency in VoIP systems.
What is jitter, and how can it affect VoIP calls?
Jitter is the variation in latency during VoIP calls, causing sound issues like choppiness. It can be mitigated by checking Quality of Service (QoS) settings or using jitter buffers if necessary.
