The time-to-live for a DNS record specifies the _____.
A) the maximum number of hops allowed for a packet to reach the host
B) the mean number of hops allowed for a packet to reach the host
C) the time at which the host is expected to be taken down for maintenance
D) the duration for which the name to IP address mapping is expected to be valid
Correct Answer:
Verified
Q15: Dynamic allocation by DHCP is useful for
Q16: DHCP _.
A)automates the allocation of IP addresses
B)enables
Q17: When NAT is used in home networks,RFC
Q18: Address resolution protocol ARP)is used to _.
A)automate
Q19: Clients locate the DHCP server on their
Q20: Non-routable addresses are also called _.
A)useless addresses
B)experimental
Q21: _ knows)the name to IP address mapping
Q22: DNS organizes the name to IP address
Q24: In a typical home network,all computers in
Q25: In a typical home network,the router also
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