Connect the cable to a different switch port and

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through the wall and ceiling. Connect the cable to a different switch port and check the status lights on the port. Try installing a different network adapter, such as an external adapter that connects through a USB port. For wireless networks, you can use wireless network locator software to do the following: o Locate wireless networks. o Verify the wireless network configuration. o Find locations with poor wireless coverage. o Detect causes of wireless interference. o Detect rogue access points. Verify the IP configuration If the network adapter has a physical connection, verify the IP configuration for the connection. Use the ipconfig utility to view the IP address, subnet mask, and default gateway configured for the system. Use ipconfig /all to view additional information (e.g., the DHCP and DNS server addresses). Verify that all configuration values are correct. If the IP address begins with 169.254. x.x and has a mask of 255.255.0.0, the computer was not able to contact the DHCP server and used APIPA to configure the address automatically. In this case, verify that the DHCP server is connected to the network and properly configured. Verify network connectivity If the computer has a valid network connection and IP configuration values are correctly set, use the ping utility to test connectivity with other network hosts. Ping sends out a request that is answered by the destination device. If the ping test succeeds, the destination device is working. If you are still having problems, check issues with logon, resource sharing, permissions, or services. If the ping test fails only to that device, then the device might not be properly configured. If a ping test fails to any network device, check routers and other devices. If you can ping the device by the IP address but not the host name, then the problem is likely with the DNS configuration. Be aware that many devices are now configured to ignore ping requests. A failed ping test might not give you reliable information about the status of network devices. Wireless Network Troubleshooting 0:00-0:24 In this lesson, we're going to review several common wireless networking issues that you may need to troubleshoot as a PC technician. Now, understand the purpose of this lesson is not to make you an expert wireless networking troubleshooter. Instead, the goal is to review basic issues that are frequently encountered by PC technicians along with how to resolve these issues. Poor Connectivity 0:25-0:50 So let's begin by reviewing issues where no wireless networking connectivity is available or the networking connectivity is intermittent. Now poor connectivity is a significant issue with wireless networks. More so than with wired networks. This is because wireless networks rely on radio signals instead of electrical signals being transmitted on a wire. As a result, the causes of poor connectivity could be much more complex than those experienced with wired networks.
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