Where did your web site go?

You’re having problems reaching one of your hosted web servers on the Internet. Before today, you were able to perform a traceroute and reach the server in 14 hops. Today, the traceroute times-out after 7 hops. What is the most likely cause of this issue?

CompTIA Network+ N10-004: 5.1 – Command Line Tools

Many of the most powerful network troubleshooting tools can be found at the command line of your operating system. In this video, you’ll learn the importance of command line tools such as traceroute, ipconfig, ifconfig, ping, arping, nslookup, dig, mtr, route, nbtstat, and netstat.

CompTIA Network+ N10-004: 4.4 – Network Monitoring

The world of network monitoring is a precise science, and it can provide insight into aspects of network performance that would otherwise go unseen. In this module, you’ll learn the use of network analyzers, connectivity software, and load testers to help build a more efficient network. You’ll also learn the value of logs and how the consolidation of logs files can assist in solving issues that span multiple devices.