The default value at which a refresh interval (an interval a sec. server check for zone updates) is 15 minutes.
If this value is increased, the network traffic is reduced. In the eventuality that the refresh interval expires, the secondary zone will contact the primary zone and request it to initiate the zone transfer.
<span>tunneling Term used
process of encasing one protocol or packet inside another protocol or packet</span>
Answer:
Explanation:
a = input("what kind of pet the user has")
if a == 'cat':
print("Too bad")
elif a == 'dog':
print("Lucky you!")