Which NIST document number is associated with IPSEC according to the source material?

• A. NIST SP 800-77
• B. NIST SP 800-113
• C. NIST SP 800-114
• D. NIST SP 800-56

Answer: (A)

IPsec guidance and implementation details are documented in NIST SP 800-77, titled Guide to IPsec VPNs. That publication is the authoritative source that links IPsec directly to a specific NIST document, which is why it’s the best answer. The other listed documents cover topics outside IPsec—so they aren’t the sources associated with IPsec in the source material.