When the DNS server checks the age of each dynamically assigned record and removes records that are older than a certain period that you specify, this process is known as _____________
a. Scavenging
b. Recursion
c. Garbage collection
d. Updating
A. When DHCP registers A and PTR resource records automatically, these records remain in the DNS zone data indefinitely. If computers are frequently added to or removed from the network (for example, when many portable computers are in use), many stale resource records can accumulate. These records can degrade the DNS server's performance.
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