Practice Quiz

MSCA 70-291 Windows Server 2003 Exam Prep

Category - 70-291

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The mnc.com network has a DNS server configured to resolve queries for external internet resources, and it also hosts the mnc.com internal zone for Active Directory. Employees report that they are directed to the wrong Web site when browsing the Internet. What should you do to minimize the occurrence of unexpected results when users browse the Internet in the future?
  1. Enable the Secure cache against pollution setting in the advanced properties of the server.
  2. Enable Fail on load if bad zone data setting in the advanced properties of the server.
  3. Enable the Disable recursion setting in the advanced properties of the server.
  4. Enable the Enable automatic scavenging of stale resource records setting in the advanced properties of the server and set it to 7 days.
Explanation
Answer - A - To minimize the occurrence of unexpected results when users browse the Internet in the future, Chad should enable the Secure cache against pollution setting in the advanced properties of the server.

Key Takeaway: When the Secure cache against pollution setting is disabled, all records received in response to DNS queries are cached. This happens even when the records do not match to a queried domain name. Enabling the Secure cache against pollution setting disables the ability to pollute the DNS cache with incorrect information and to spoof DNS queries. With Windows Server 2003, the caches are secured against pollution by default. This will prevent users browsing the Internet from being directed to the wrong websites.
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