ITPEC IP October 2020 Question 30
ITPEC IP October 2020 — Question 30 of 100
NAT converts between private IP addresses used inside a LAN and a global IP address used on the Internet. The gateway rewrites address information as packets cross the network boundary and maintains the mapping required for returning traffic.
Answer (b)
Why not others:
- MAC addresses identify network interfaces on the local link and are not the address type translated by NAT
- host-name-to-IP-address conversion is performed by DNS
- therefore neither option involving host names describes NAT
Key rule: NAT translates IP address spaces; DNS resolves names, and link-layer communication uses MAC addresses.
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