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Linux Foundation KCNA Exam - Topic 2 Question 58 Discussion

Actual exam question for Linux Foundation's KCNA exam
Question #: 58
Topic #: 2
[All KCNA Questions]

Which prometheus metric type represents a single number value that can increase and decrease over time?

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Suggested Answer: A

https://prometheus.io/docs/concepts/metric_types/#gauge


by Linwood at Jan 24, 2025, 03:18 AM

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Carma
4 months ago
Pretty sure it's not a Histogram or Summary.
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Brianne
4 months ago
Yeah, I always mix those up!
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Janine
4 months ago
Wait, are you sure? I thought it was a Counter.
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Lili
4 months ago
Agreed, Gauges can go up and down.
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Tamera
5 months ago
It's definitely a Gauge!
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Samira
5 months ago
I'm leaning towards Gauge too, but I wonder if there's a trick in the wording that I'm missing.
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Cyril
5 months ago
Histogram and Summary seem more about distributions, right? I feel like they don't fit this question.
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Berry
5 months ago
I remember practicing a question about metric types, and I think Counters only increase, so that can't be it.
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Bernadine
5 months ago
I think the answer might be Gauge since it can go up and down, but I'm not completely sure.
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Tammi
5 months ago
I've got this! The answer is Gauge. It's the perfect fit for a metric that represents a single value that can fluctuate over time.
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Shoshana
5 months ago
Okay, let me think this through. Histogram and Summary are used for more complex metrics, so those don't seem right. Counter is for metrics that only go up. That leaves Gauge as the best option for a single number that can increase and decrease.
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Deandrea
5 months ago
I'm a bit unsure about this one. I know Gauge is used for metrics that can go up and down, but I'm not totally confident that's the right answer here. Might need to think it through a bit more.
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Van
6 months ago
Hmm, this one seems straightforward. I think the answer is Gauge, since it represents a single number that can increase and decrease over time.
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Cyndy
1 year ago
I'm feeling a bit Gauged about this question. But I'm sure I'll nail it when I'm not so Prometheus-ed.
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Ivette
1 year ago
A) Gauge is the way to go here. It's the one that's designed to handle dynamic values, unlike those other static metrics.
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Douglass
1 year ago
B) I agree, Gauge is perfect for tracking values that can change over time.
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Nu
1 year ago
A) Gauge is definitely the best choice for this type of metric.
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Chandra
1 year ago
Hmm, I was thinking B) Histogram, because that can show the distribution of values. But I guess that's not the best fit for a single number that fluctuates.
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Edelmira
1 year ago
I'm going to go with D) Counter, because that's the one that keeps track of a value that can only increase over time, right?
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Youlanda
12 months ago
No problem! It can be a bit confusing, but now you know that Gauge is the metric type that can increase and decrease over time.
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Fletcher
12 months ago
I see, thanks for the clarification. I thought it was Counter because it keeps track of values that can only increase.
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Glory
1 year ago
Actually, the correct answer is A) Gauge. A Gauge represents a single number value that can increase and decrease over time.
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Tamekia
1 year ago
Yes, you're correct! Counter is the metric type that represents a single number value that can only increase over time.
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Nettie
1 year ago
Actually, a Counter is a cumulative metric that can only increase, while a Gauge can increase and decrease.
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Armanda
1 year ago
I'm not sure, but I think it's D) Counter because it counts occurrences.
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Annelle
1 year ago
I agree with Nettie, a Gauge represents a single number value that can increase and decrease over time.
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Kaycee
1 year ago
A Gauge sounds like the perfect choice to represent a number that can go up and down. The other options seem more for counting or binning data.
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Yesenia
1 year ago
Yeah, a Gauge makes sense for that type of metric. Counters are more for incrementing values and histograms are for distribution data.
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Tamera
1 year ago
I agree, a Gauge is definitely the best choice for representing a single number that can change over time.
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Nettie
1 year ago
I think the answer is A) Gauge.
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