That would just tell me that my local DNS server is down for the moment. Now the A+ doesn't expect you to fix DNS servers, but it does expect you to recognize a DNS problem so you can get on the phone and call whoever is administrating your DNS server and say hey man, fix it.
How do I know DNSCrypt is working? – OpenDNS Jul 18, 2013 How can I check if my DNS server is working? - Unix The DNS server seems to be working fine. The likely bug is that your system is asking it for an IPV6 address even though your system doesn't have IPV6 connectivity. An IP address can also be unreachable from your system if some ISP in between has a broken router. What is DNS (Domain Name System) and How it Works Nov 05, 2015
How to verify whether DNS is working correctly
May 25, 2020 · Scenario 4: Working, but filtering isn't working or isn't correctly working Resolution 1: We advise that you clear the cache on your network's devices to ensure that your DNS settings take effect immediately. The DNSChanger Working Group has compiled a list of many of these services, which you can use to test your system (for those in the U.S., you can go to dns-ok.us to test your connection). DNS packages doesn't contain information about its source and destination they are doing automatically using the DNS query cascade. What you can do to know if it's working the forwarders or not is to set up a client with the Windows Server DNS IP as only DNS. Make sure to clean up the cache by executing (ipconfig /flushdns) on client. Apr 15, 2020 · If your computer’s DNS is set to your router’s IP address, most commonly a single DNS server is listed, and it’s the same as the “Default Gateway” listed in the ipconfig output. To see what DNS server you’re really using for requests the router can’t fulfill, check the router’s configuration.
Identifying whether your DNS server is working correctly is one step in solving your internet connection issues. These 4 tips will help you know whether you need to change your DNS server or make adjustments to your router. However, you can make use of these tools to also identify the best DNS server for your network.
Mar 21, 2020 How to ''Quickly'' Test DNS Resolution Jan 05, 2005 How can you know if DHCP server working or not? - Bayt.com