ITPEC FE Morning April 2019 Question 31
ITPEC FE Morning April 2019 — Question 31 of 80
NAT (Network Address Translation) — translates between private and global IP addresses on a router.
NAT allows multiple devices on a local network to share a single public IP address by converting private addresses (e.g., 192.168.x.x) to a global address and back.
Why not others:
- (a) Caching Internet access — describes a proxy server, not NAT
- (c) Inspecting packets for attacks — describes an IDS/IPS (Intrusion Detection/Prevention System)
- (d) Passing packets for specific terminals — describes packet filtering (firewall function)
Key rule: NAT = address translation (private ↔ global). Don't confuse with proxy (caching), IDS (inspection), or firewall (filtering).
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