What command is used to clear the DNS cache on a Windows machine?

What command is used to clear the DNS cache on a Windows machine?

• A. ipconfig /renewdns
• B. ipconfig /clearcache
• C. ipconfig /flushdns
• D. ipconfig /resetdns

Answer: (C)

The command used to clear the DNS cache on a Windows machine is 'ipconfig /flushdns'. When this command is executed, it instructs the system to discard all entries in the DNS resolver cache. This is often necessary when there are issues with DNS resolution, such as when a website has changed its IP address or if stale DNS entries are causing connectivity problems. Using 'ipconfig /flushdns' ensures that the system retrieves fresh DNS information from configured DNS servers rather than relying on potentially outdated cached data. As a result, it is an essential troubleshooting step for resolving DNS-related issues on Windows systems.

The command used to clear the DNS cache on a Windows machine is 'ipconfig /flushdns'. When this command is executed, it instructs the system to discard all entries in the DNS resolver cache. This is often necessary when there are issues with DNS resolution, such as when a website has changed its IP address or if stale DNS entries are causing connectivity problems.

Using 'ipconfig /flushdns' ensures that the system retrieves fresh DNS information from configured DNS servers rather than relying on potentially outdated cached data. As a result, it is an essential troubleshooting step for resolving DNS-related issues on Windows systems.