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Computer Networks · Network Address Translation
Official IIT answer key · IISc Bangalore · Audited Aug 2026
GATE CSE 2024 Set 1 Q31 · MSQ · 1 mark
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Topic notes
Network Address Translation (NAT) is tested on the fundamental mechanics of header modification during packet traversal between private and public networks. GATE evaluates precise knowledge of which IPv4 header fields (and transport layer fields such as port numbers) are altered, preserved, or recalculated when traversing a NAT router.
Full Network Address Translation guide →Which of the following fields is/are modified in the IP header of a packet going out of a network address translation (NAT) device from an internal network to an external network?
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