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Huawei H35-481_V2.0 Exam - Topic 1 Question 3 Discussion

If the subcarrier spacing (SCS) of a low-frequency cell Is 30 kHz and the bandwidth of each RB Is 360 kHz, theoretically, what value should the noise (dBm) over the air interface be?
B) -116
A) -105
C) -120
D) -97

Huawei H35-481_V2.0 Exam - Topic 1 Question 3 Discussion

Actual exam question for Huawei's H35-481_V2.0 exam
Question #: 3
Topic #: 1
[All H35-481_V2.0 Questions]

If the subcarrier spacing (SCS) of a low-frequency cell Is 30 kHz and the bandwidth of each RB Is 360 kHz, theoretically, what value should the noise (dBm) over the air interface be?

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Suggested Answer: B

The theoretically noise (dBm) over the air interface should be -116 dBm. The noise is calculated by subtracting the noise figure of the receiver from the thermal noise floor, which is determined by the subcarrier spacing and the bandwidth of each Resource Block (RB). In this case, the subcarrier spacing is 30 kHz and the bandwidth of each RB is 360 kHz, so the thermal noise floor is -116 dBm.


by Loren at Feb 04, 2023, 10:25 PM

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Chantell
10 months ago
I agree with -116 dBm, makes sense with the SCS and RB bandwidth!
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Yvonne
10 months ago
Wait, how can it be -97 dBm? That sounds off.
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Elke
10 months ago
Not sure about that, -105 dBm seems too high for low-frequency.
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Carissa
10 months ago
Definitely -120 dBm, that’s what I calculated too!
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Maurine
10 months ago
I think the noise should be around -116 dBm.
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Anastacia
11 months ago
I vaguely remember that lower frequencies might have different noise characteristics. I’m tempted to choose -116 dBm, but I need to double-check my notes.
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Keith
11 months ago
I feel like the noise level should be around -120 dBm, but I can't recall the exact formula we used in class.
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Hildred
11 months ago
I think we practiced a similar question where we had to calculate noise levels. I might lean towards option B, but I’m not completely confident.
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Cherrie
11 months ago
I remember something about calculating noise based on bandwidth and subcarrier spacing, but I'm not sure how to apply it here.
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Corazon
11 months ago
I'm a bit confused on this one. I know we can recreate the view, but that seems like a lot of work if we just need to change a few columns. Is there a more efficient way to update the view definition?
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Paul
11 months ago
I'm leaning towards option C - multiple Regional Cloud Storage buckets, one per zone per region. That should provide good latency while still being cost-effective.
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Beula
11 months ago
Hmm, this is a tricky one. I'll need to think carefully about the permissions and ownership for the /etc/passwd file.
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Natalie
11 months ago
I'm pretty sure the Tl-LFA only applies to the instance and makes the interfaces inherit the configuration, not the entire OSPF network. But I'll double-check my notes to be sure.
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