Question

A security administrator wants to empty the DNS cache after a suspected attack that may have corrupted the DNS server. The server has been repaired, however it is feared that DNS entries may remain in client computer caches. Which of the following tools can be used to flush the DNS cache on a Windows client?

Answer 1

Answer:

The easiest method to clear a DNS cache is to use either the command line, PowerShell or Windows Server's DNS Manager

Explanation:

You can use either the ipconfig /flushdns (command line), Clear-DnsClientCache (PowerShell) or DNS->(name)->Clear Cache (from the DNS Manager)

source:

https://activedirectorypro.com/clear-windows-dns-cache/

https://www.technipages.com/flush-and-reset-the-dns-resolver-cache-using-ipconfig

Answer 2

Answer:

hi your question lacks the option but here is the best tool to be used by the security administrator

using the IPCONFIG

Explanation:

The DNS cache on a windows client is the temporary storage of the DNS files on the client system that was connected to a DNS server. if there has been a suspected attack on the DNS server it is necessary that after clearing the DNS cache of the server it is necessary to clear that of the client system because the corrupted/attacked DNS file might be retained in the DNS cache of the client system.

The security administrator can use a tool called IPCONFIG to perform this task of clearing/flushing the DNS cache on a windows client system to eliminate completely the corrupted files that the attacked DNS server might have transmitted to systems connected to it.