ITPEC IP October 2024 Question 30
ITPEC IP October 2024 — Question 30 of 100
NAT converts between private IP addresses used inside a LAN and a global IP address used on the Internet. A router replaces address information as packets cross the network boundary and keeps translation state so returning traffic reaches the correct internal host. Variants using port numbers allow many private hosts to share one public address.
Answer (b)
Why not others:
- (a) MAC addresses identify network interfaces at the local data-link layer and are not the public side of NAT
- (c) and (d) host-name resolution is performed by DNS, not NAT
Key rule: DNS translates names to IP addresses; NAT translates IP addressing between private and public network realms.
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