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Exam N10-008 topic 1 question 320 discussion

Actual exam question from CompTIA's N10-008
Question #: 320
Topic #: 1
[All N10-008 Questions]

Given the following information:



Which of the following would cause performance degradation between PC A and PC B?

  • A. Attenuation
  • B. Interference
  • C. Decibel loss
  • D. Incorrect pinout
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Suggested Answer: A 🗳️

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Xigema
Highly Voted 1 year, 11 months ago
Correct me if I am wrong. But from my understanding, since majority of Cat cables, especially a Cat 5 cable only has a max length of 100m, since this cable in PC A to switch 1 exceeds that length, wouldn't attenuation be the cause of performance degradation? dB loss or gain shouldn't CAUSE a problem, that's more of a metric than an actual problem.
upvoted 17 times
Rongupta
1 year, 11 months ago
you are right. DB loss decreases as the length increases. but cat 5 is limited to 100m, so it will result in attenuation.
upvoted 3 times
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superzeke
8 months, 3 weeks ago
That makes sense. I hate this question, but the way you put it is logical.
upvoted 2 times
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LeonardSnart
Highly Voted 1 year, 11 months ago
Selected Answer: A
For sure attenuation for reasons others have mentioned already. Mike Meyers "Attenuation is the weakening of a signal as it travels long distances and is caused when wave signals travel too far without help. As a cable run gets longer, the attenuation increases, and the signal becomes weaker."
upvoted 10 times
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Paula77
Most Recent 10 months, 1 week ago
Selected Answer: A
The Cat5 cable is longer than 100m
upvoted 1 times
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Mehsotopes
11 months, 1 week ago
Selected Answer: C
Cat 5's maximum cable distance is 100 meters, there would be a loss of signal strength also known as decibel loss moving away from the transmission source. https://infinity-cable-products.com/blogs/terms/insertion-loss#:~:text=Insertion%20loss%20in%20ethernet%20cable,through%20a%20DCM%20testing%20machine Attenuation is a form of signal being blocked, or interfered with that will reduce it's effect. Distance can be a factor in attenuation, but decibel loss is a more precise answer.
upvoted 2 times
[Removed]
10 months, 1 week ago
Another wrong answer.
upvoted 4 times
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Mehsotopes
11 months, 1 week ago
Selected Answer: C
Cat 5's maximum cable distance is 100 meters, there would be a loss of signal strength also known as decibel loss moving away from the transmission source. https://infinity-cable-products.com/blogs/terms/insertion-loss#:~:text=Insertion%20loss%20in%20ethernet%20cable,through%20a%20DCM%20testing%20machine
upvoted 1 times
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phoenix98
11 months, 4 weeks ago
Selected Answer: C
g. Signal loss along this cable is referred to as antenna cable attenuation. LMR/HDF/CFD 200 cable has attenuation of about 0.6 dB/m (decibels per meter), while 400 cable improves that to about 0.22 dB/m. Connector loss is usually calculated as 0.15 dB. Which means it has to be C because Attenuation is measured in db.
upvoted 1 times
phoenix98
11 months, 4 weeks ago
Signal loss along this cable is referred to as antenna cable attenuation. LMR/HDF/CFD 200 cable has attenuation of about 0.6 dB/m (decibels per meter), while 400 cable improves that to about 0.22 dB/m. Connector loss is usually calculated as 0.15 dB.
upvoted 1 times
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jeanj
12 months ago
Attenuation is the loss of signal strength in networking cables or connections. This typically is measured in decibels (dB) or voltage and can occur due to a variety of factors. It may cause signals to become distorted or indiscernible. An example of this is Wi-Fi signal and strength getting noticeably weaker the further that your device is from the router. DB is a measurement for Attenuation,
upvoted 1 times
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Juliana1017
1 year, 2 months ago
Selected Answer: A
correct answer is A
upvoted 1 times
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Juliana1017
1 year, 2 months ago
Selected Answer: A
It's A, decibel loss does not even make sense
upvoted 2 times
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[Removed]
1 year, 7 months ago
this is poor choice of answers b/c dB measures Attenuation. Very frustrating.
upvoted 2 times
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MelzTheArtist
1 year, 8 months ago
Selected Answer: A
answer is A The cable length, cable type, and configuration are all factors that can contribute to performance degradation between PC A and PC B. However, the cable length of 394ft (120m) between PC A and switch 1 is the most likely cause of performance degradation. This length is beyond the maximum recommended length for Cat5 cable and may result in significant attenuation and signal degradation, causing slower data transfer speeds and possibly even disconnections.
upvoted 2 times
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mr_reyes
1 year, 10 months ago
Selected Answer: A
Attenuation for sure.
upvoted 2 times
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AustinKelleyNet
1 year, 10 months ago
Selected Answer: A
Cat 5 starts to degrade at 100 meters and it at first has to go 120 meters. It is A
upvoted 2 times
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