Your Internet connectivity has suddenly stopped working in the middle of a download. You can surf to your local newspaper’s web site, but whenever you ping the Google name server (220.127.116.11) you do not get an echo reply. Which of these could be a cause of this problem?
A) Your DHCP address has expired
B) Your Internet router is faulty
C) Your ISP is having connectivity issues
D) Your download has overloaded your Internet connection
E) If you disconnect your Ethernet connection and put it to your ear, you can tell if a train is coming
The answer: C) Your ISP is having connectivity issues
Since you have some connectivity, you know that your computer has an IP address and your Internet router is operating properly. However, because your Internet connectivity works to some sites and not others, the issue must be related to connectivity somewhere in the Internet “cloud.”
Want to know more? Watch “Network Troubleshooting Tools.”
There are many network troubleshooting tools available at the command line. In this video, you’ll learn how to use tools such as ping, tracert, nslookup, netstat, and many others.