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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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Arthur

1 months ago

You know, if this was a trick question, I'd say C) OFDM just to mess with the instructor. But in reality, B) DSSS is the correct answer, no doubt about it.

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Lavera

25 days ago

I agree, DSSS is the correct spread spectrum technique.

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Azzie

1 months ago

I think the answer is B) DSSS.

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Rolande

2 months 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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Edison

5 days ago

I think B) DSSS is the correct answer.

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Annabelle

27 days ago

Yes, you're right. DSSS is the spread spectrum technique that multiplies the original data signal with a pseudo random noise spreading code.

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Kristofer

28 days ago

I think B) DSSS is the correct answer.

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Cassie

2 months 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

2 months ago

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

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Barrett

2 months 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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Rashad

7 days ago

Got it, thanks for clarifying!

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Art

8 days ago

So, B) DSSS is the correct answer.

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Mauricio

9 days ago

Yeah, DSSS is the spread spectrum technique that multiplies the original data signal with a pseudo random noise spreading code.

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Adolph

11 days ago

I think FHSS is the one that hops around the frequency spectrum.

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Antonio

12 days ago

DSSS is the spread spectrum technique we're looking for.

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Veta

13 days ago

So, the answer is definitely B.

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Elden

17 days ago

Yeah, DSSS multiplies with pseudo random noise spreading code.

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Francoise

1 months ago

I think you're right, FHSS hops around frequencies.

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Lavina

2 months 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

2 months ago

I think the answer is B) DSSS.

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