The responses that a DNS server returns to DNS client requests are classified as either
authoritative or non-authoritative. What are two characteristics of non-authoritative responses?
(Choose two.)
A.
can be incorrect if the server’s cache contains stale data
B.
are sourced from a server’s cache
C.
are sourced from a disk-based file
D.
if validated from at least two other sources, are promoted to an authoritative response
E.
are always correct