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Eccouncil Exam 312-38 Topic 6 Question 105 Discussion

Actual exam question for Eccouncil's 312-38 exam

Question #: 105
Topic #: 6

[All 312-38 Questions]

Identify the spread spectrum technique that multiplies the original data signal with a pseudo random noise spreading code.

AFHSS

BDSSS

COFDM

DISM

Show Suggested Answer

Suggested Answer: B

The spread spectrum technique that involves multiplying the original data signal with a pseudo-random noise spreading code is known as Direct Sequence Spread Spectrum (DSSS). In DSSS, the data signal is combined with a higher data-rate bit sequence, also known as a chipping code, which divides the data according to a spreading ratio. The chipping code is a pseudo-random code sequence that spreads the signal across a wider bandwidth. This process allows the signal to be more resistant to interference and eavesdropping.

by Rikki at Apr 03, 2025, 02:57 PM

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Rolande

8 days ago

Hmm, OFDM is for multi-carrier transmission, not spread spectrum. And ISM is just a frequency band, not a technique. B) DSSS is the winner here!

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Cassie

10 days ago

I'm not sure, but I think FHSS is also a spread spectrum technique. Can someone explain why DSSS is the correct answer?

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Ryan

13 days ago

I agree with Emeline, DSSS is the spread spectrum technique that uses pseudo random noise spreading code.

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Barrett

17 days ago

I'm pretty sure FHSS is the one that hops around the frequency spectrum, not DSSS. B is the right answer for sure.

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Lavina

18 days ago

B) DSSS is the way to go! Spreading the signal with a pseudo-random code is the essence of direct sequence spread spectrum.

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Emeline

21 days ago

I think the answer is B) DSSS.

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