Domain Name System in Computer Networks

Domain Name System converts your entered commands into the numerical IP code for the web page you desire. Our language is not understood by the internet server. Instead, it use a numerical IP address scheme to determine which sites to link to and load in our browser. DNS is responsible for converting what we write into a numerical IP address that the DNS server recognizes.

Domain Name System example. It's the term that appears just after @ mark in email addresses and after the www. symbol in web addresses. For example, the domain name may correspond to the physical location 198.102.434.8.

How to Troubleshoot DNS Issues

How to resolve DNS issues. Because DNS difficulties can occur at the machine level, as part of a router problem, or as a result of a mistake with your internet service provider (ISP), you may need to try a few different things to narrow down the source and find a solution. Before you do anything else, run the Windows Internet Troubleshooter. This wizard can diagnose and rectify DNS faults without the need for your intervention.
In your task tray, right-click on the internet icon.
Choose Troubleshoot issues.
Allow the wizard to complete all of the steps. This might take some time.
If this does not resolve your issue, go to the remedies below, which are intended for Windows 10 users.

1. Rule Out ISP Problems

Connecting with another device may ensure that you are not experiencing ISP troubles. If you can connect directly to your ISP without going through the router, do so. Follow these steps:
• Disconnect the cable running into the WAN or internet port labeled on the back of your wireless router.
• Plug the free end of this same cable directly into your computer's Ethernet port.
• Turn off the Wi-Fi router so you don't connect to it by accident.
• Allow your computer a few moments to identify the new connection. Make sure you're utilizing an Ethernet or LAN connection rather than Wi-Fi. It is possible that you may need to restart your computer for the new settings to take effect.

If one of your other devices can connect, the problem is not with your ISP. If nothing has changed on your end (all of your settings remain the same) and you can still not connect to any of your devices, contact your ISP to check if they are experiencing service difficulties.

2. Restart Your Networking Hardware

Have you tried unplugging your router? So, how about the modem? Restart both devices, followed by your computer, to see if this answers your problems. For the greatest results, wait for a full 2 to 3 minutes between turning off and powering back on.

3. Clear DNS Cache and Restart Winsock

This easy procedure can often get you back up and surfing the web.
In the Start Search bar, type "cmd" and then click Open Command Prompt.

4. Install and Launch the LLDP Protocol Driver

Activating this driver may help to resolve your DNS issues. To use it:
• To access the Quick Link Menu, press the Windows + X keys together. Choose Network Connections. Alternatively, you may bring up your available networks by clicking on the internet icon in your task tray. Select the Internet and Network Settings option.
• Change Adapter Settings or Change Connection Properties will be shown.
• Right-click on the connection you're running in the current window that pops up. Choose Properties.
• Search for LLDP Protocol Driver on the list. Check the box to the right of it.
• To depart, click OK.

5. Update and Reinstall Network Adapter Drivers as Needed

Is it a long time since you last updated your drivers? This might be causing problems, particularly if you have added additional hardware to your PC since purchasing it. You can address DNS difficulties by checking for network device driver updates and manually upgrading them. To check for driver updates, follow these steps:
• Access the Device Manager software by writing a devmgmt into the Windows Start Menu search field.
• Expand the Network adapters section in the list by clicking on it.
• Locate your network device and right-click it to choose Update driver.
• Select Search automatically for updated driver software when requested. This might take a few seconds to finish.
• Windows will install any accessible drivers.
• Restart your computer and check to see whether the DNS problem has been resolved.
If this happens, you can reinstall the driver. Before you remove a driver, be sure you know what you need and how to get it. Write the driver's name, and then do:
• Steps 1 and 2 should be repeated.
• Locate your driver and select Uninstall from the context menu.
• To replace the driver, use the driver software obtained from the manufacturer's website.
• Restart your computer and double-check the DNS.

6. Examine the Power Settings

Wireless adapters may malfunction because of energy-saving features. Changing your power settings may be enough to bring you back online.
Begin with the following steps:
• From the Start Menu, type Control Panel into the Search box.
• To access the Control Panel, click.
• Choose Hardware & Sound.
• Look for the Power Options section, then select or modify a power plan.
• Select the Change Plan Settings option.
• Change the Advanced Power Settings link.
• Locate Wireless Adapter Settings in the new window. Click to enlarge.
• Expand the Power Saving Mode option by clicking it.
• Change both the On battery and the Plugged-in settings to Maximum Performance.
• To save and depart, click OK.

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