Systems Security Certified Practitioner – SSCP – Question0965

Upon which of the following ISO/OSI layers does network address translation operate?

A.
Transport layer
B. Session layer
C. Data link layer
D. Network layer

Correct Answer: D

Explanation:

Network address translation (NAT) is concerned with IP address translation between two networks and operates at the network layer (layer 3). Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002, Chapter 3: Telecommunications and Network Security (page 440).