Discuss ISC2 SSCP Exam Topic 3 Question 28

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

ABecause infrared eavesdropping requires more sophisticated equipment.

BBecause infrared operates only over short distances.

CBecause infrared requires direct line-of-sight paths.

DBecause infrared operates at extra-low frequencies (ELF).

Suggested Answer: C

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).

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12 comments · newest first

Teddy 11 months ago

I thought radio was secure too, this is interesting!

Timothy 12 months ago

Definitely, ELF frequencies are not the main issue here.

Keneth 12 months ago

Wait, does that really mean it's more secure?

Solange 12 months ago

I agree, short distances make it harder to intercept.

Alonzo 1 year ago

Infrared needs line-of-sight, that's a big factor!

Tammara 1 year ago

I practiced a question similar to this, and I think the key point was about the short distance and line-of-sight requirements for infrared.

Freeman 1 year ago

I'm not entirely sure, but I feel like the equipment needed for infrared eavesdropping is more complex than for radio transmissions.

Clare 1 year ago

I think I read somewhere that infrared needs a direct line of sight, which makes it harder for eavesdroppers to pick up the signal.

Jackie 1 year ago

I remember studying that infrared signals are less likely to be intercepted because they don't travel as far as radio waves.

Lynette 1 year ago

This looks like a compound interest problem. I'll need to calculate the future value of the monthly investments over the first 12 years, then add the fixed payments for the next 12 years.

Marguerita 1 year ago

Aha, I know this one! The employee used steganography to hide the information in the picture attachments. That's the technique Lori discovered when she examined the files more closely.

Brandon 1 year ago

I'm pretty sure the Kanban approach is about visualizing and controlling work in progress, so I'll go with option A.

ISC2 SSCP Exam - Topic 3 Question 28 Discussion