Cisco Networking Essentials 25B 2025 – 400 Free Practice Questions to Pass the Exam

The command used to flush the DNS cache in Windows is "ipconfig /flushdns." This command clears the contents of the DNS cache, allowing the system to resolve domain names afresh. Flushing the DNS cache is particularly useful for troubleshooting issues related to DNS resolution, ensuring that any outdated or incorrect entries are removed, and the latest information is obtained from the DNS servers.

The other options associated with the "ipconfig" command serve different purposes. "ipconfig /renew" is used to request a new IP address from a DHCP server, facilitating network connectivity changes. "ipconfig /release" is utilized to release the current DHCP-assigned IP address, effectively disconnecting the device from the network, and "ipconfig /clear" is not a valid option in the context of DNS management in Windows. Thus, selecting "ipconfig /flushdns" is the correct approach for addressing DNS cache related issues.