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Huawei H13-723_V2.0 Exam - Topic 1 Question 14 Discussion

existSparkIn application development, which of the following codes can correctly count words?
B) val counts=textFile.flatMap(line=>line.split(' ')).map(word=>(word,1)).reduceByKey(_+_)
A) val counts=textFile.map(line=>line.split(' ')).map(-rd=>(word,1)).reduceByKey(_+_)
C) val counts=textFile.map(line=>line.split(' ')).map(word=>(word,1)).groupByKey()
D) val counts=textFile.flatmap(line=>line.split(' ')).map(-rd=>(word,1)).reduceByKey()

Huawei H13-723_V2.0 Exam - Topic 1 Question 14 Discussion

Actual exam question for Huawei's H13-723_V2.0 exam
Question #: 14
Topic #: 1
[All H13-723_V2.0 Questions]

existSparkIn application development, which of the following codes can correctly count words?

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Suggested Answer: B

by Elli at Dec 30, 2022, 01:34 AM

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Nickole
11 months ago
I’m not sure about C, it doesn’t seem right for counting.
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Dannie
11 months ago
Definitely B, it’s the standard way to count words in Spark.
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Leila
11 months ago
Wait, isn’t D just a typo with "flatmap"?
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Detra
11 months ago
I think A could work too, but not as efficiently.
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Chauncey
11 months ago
Option B is the correct one for counting words!
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Donte
12 months ago
I feel like option C could work too, but I’m not confident about using `groupByKey` for counting words.
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Jerlene
12 months ago
I practiced a similar question, and I think option B is the right choice since it correctly maps and reduces the word counts.
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Marti
12 months ago
I'm not entirely sure, but I think option A might be incorrect because it uses `map` instead of `flatMap`.
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Veronika
12 months ago
I remember we discussed how `flatMap` is often used for word counting because it flattens the results.
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Corazon
12 months ago
Hmm, I'm not sure about this one. I'll have to think it through carefully. Maybe I can find some information about RFM in the documentation.
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Craig
12 months ago
Okay, let me think this through step-by-step. Handlebar Templates are used for the UI, so they're likely defined in a UI-related configuration. The options mention uiProperties, Configuration Settings, and Page Settings, so I'll try to eliminate the less likely ones and go with the best fit.
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Cornell
12 months ago
I remember that if a business isn't registered for sales tax, it probably won't be charging it to customers, but I'm not entirely sure which option reflects that.
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Sarah
12 months ago
It seems to me that the accuracy of the new system is key; I just hope it can match what's currently in place at our university.
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Jacqueline
12 months ago
I think the best practice is to use the '--addressForce' parameter when deploying a new contract. That should help maintain the same address, right?
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Sheron
12 months ago
I think user awareness and training is the most effective method to counter phishing attacks. Educating users on how to identify and avoid phishing attempts is crucial.
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