Systems Security Certified Practitioner – SSCP – Question1029 - Systems Security Certified Practitioner

Why is infrared generally considered to be more secure to eavesdropping than multidirectional radio transmissions?

A. Because infrared eavesdropping requires more sophisticated equipment.
B. Because infrared operates only over short distances.
C. Because infrared requires direct line-of-sight paths.
D. Because infrared operates at extra-low frequencies (ELF).

Correct Answer: C

Explanation:

Infrared is generally considered to be more secure to eavesdropping than multidirectional radio transmissions because infrared requires direct line-of-sight paths. Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 4: Cryptography (page 173).