70-642 · Question #321
Your network contains a DNS zone for contoso.com. All servers register their host names in DNS by using dynamic updates. The network contains a server named Server1.contoso.com. From a computer…
The correct answer is A. Run ipconfig.exe and specify the /flushdns parameter. ipconfig/flushdns - Flushes and resets the contents of the DNS client resolver cache. During DNS troubleshooting, you can use this procedure to discard negative cache entries from the cache, as well as any other entries that have been added dynamically. us/ipconfig.mspx?mfr=true
Question
Your network contains a DNS zone for contoso.com. All servers register their host names in DNS by using dynamic updates. The network contains a server named Server1.contoso.com. From a computer named Computer1 that runs Windows 7, you successfully resolve Server1.contoso.com to an IP address. You change the IP address of Server1.contoso.com. From Computer1, you discover that server1.contoso.com still resolves to the old IP address. You successfully connect to server1.contoso.com by using the new IP address. You need to ensure that you can immediately resolve Server1.contoso.com to the new IP address. What should you do on Computer1?
Options
- ARun ipconfig.exe and specify the /flushdns parameter.
- BRun netsh.exe and specify the dnsclient context.
- CRestart the Peer Name Resolution Protocol (PNRP) service.
- DRun dnscacheugc.exe.
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Explanation
ipconfig/flushdns - Flushes and resets the contents of the DNS client resolver cache. During DNS troubleshooting, you can use this procedure to discard negative cache entries from the cache, as well as any other entries that have been added dynamically. us/ipconfig.mspx?mfr=true
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