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Question ID 10082	Your network contains a domain controller that is configured as a DNS server. The server hosts an Active Directory-integrated zone for the domain. You need to reduce how long it takes until stale records are deleted from the zone. What should you do?
Option A	From the configuration directory partition of the forest, modify the tombstone lifetime.
Option B	From the configuration directory partition of the forest, modify the garbage collection interval.
Option C	From the aging properties of the zone, modify the no-refresh interval and the refresh interval.
Option D	From the start of authority (SOA) record of the zone, modify the refresh interval and the expire interval.
Correct Answer	C

Explanation Explanation/Reference: Explanation: Scavenging automates the deletion of old records. When scavenging is enabled, then you should also change the no-refresh and refresh intervals of the aging properties of the zone else it may take too long for stale records to be deleted and the size of the DNS database can become large and have an adverse effect on performance.

Question ID 10087	You have an Active Directory domain named contoso.com. You have a domain controller named Server1 that is configured as a DNS server. Server1 hosts a standard primary zone for contoso.com. The DNS configuration of Server1 is shown in the exhibit. You discover that stale resource records are not automatically removed from the contoso.com zone. You need to ensure that the stale resource records are automatically removed from the contoso.com zone. What should you do?
Option A	Set the scavenging period of Server1 to 0 days.
Option B	Modify the Server Aging/Scavenging properties.
Option C	Configure the aging properties for the contoso.com zone.
Option D	Convert the contoso.com zone to an Active Directory-integrated zone.
Correct Answer	C

Explanation Explanation/Reference: Explanation: Scavenging or aging as it is also known as automates the deletion of old records. When scavenging is disabled, these records must be deleted manually or the size of the DNS database can become large and have an adverse effect on performance. In the exhibit it shows that scavenging is enabled on Server1, thus you should configure the aging properties for the zone.

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