N10-005 · Question #328
A technician suspects invalid information in the local DNS cache of a workstation. Which of the following commands can be used to clear this?
The correct answer is D. ipconfig. On Windows, the command 'ipconfig /flushdns' clears the local DNS resolver cache, removing any stale or invalid cached records. This forces the workstation to query the DNS server fresh on the next lookup. 'nslookup' is a DNS query tool used to look up hostnames and IP…
Question
A technician suspects invalid information in the local DNS cache of a workstation. Which of the following commands can be used to clear this?
Options
- Anslookup
- Bifconfig
- Cdig
- Dipconfig
How the community answered
(33 responses)- A3% (1)
- C6% (2)
- D91% (30)
Explanation
On Windows, the command 'ipconfig /flushdns' clears the local DNS resolver cache, removing any stale or invalid cached records. This forces the workstation to query the DNS server fresh on the next lookup. 'nslookup' is a DNS query tool used to look up hostnames and IP addresses-it does not flush the cache. 'ifconfig' is a Linux/Unix command used to configure or display network interface settings and has no DNS cache management function. 'dig' (Domain Information Groper) is a Unix/Linux DNS lookup tool similar to nslookup-it queries DNS but does not clear the local cache.
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