Which of the following is a key difference between KNN and k-means machine-learning techniques?
Answer(s): D
KNN is a supervised algorithm that assigns labels based on the closest labeled examples, whereas k- means is an unsupervised method that partitions data into clusters by finding centroids without using any pre-existing labels.
A data scientist needs to:Build a predictive model that gives the likelihood that a car will get a flat tire.Provide a data set of cars that had flat tires and cars that did not.All the cars in the data set had sensors taking weekly measurements of tire pressure similar to the sensors that will be installed in the cars consumers drive. Which of the following is the most immediate data concern?
Because tire-pressure sensors report only weekly measurements, you risk missing the critical pressure drop immediately preceding a flat. Those stale ("lagged") readings may not reflect the condition just before failure, undermining your model's ability to learn the true precursors to a flat tire.
The term "greedy algorithms" refers to machine-learning algorithms that:
Greedy algorithms build the solution iteratively by choosing at each step the option that appears best at that moment, without reconsidering earlier choices.
A data scientist is deploying a model that needs to be accessed by multiple departments with minimal development effort by the departments. Which of the following APIs would be best for the data scientist to use?
RESTful APIs use standard HTTP methods and lightweight data formats (typically JSON), making them easy for diverse teams to integrate with minimal effort and without heavy tooling.
Which of the following compute delivery models allows packaging of only critical dependencies while developing a reusable asset?
Answer(s): B
Containers encapsulate just the application and its critical dependencies on a lightweight runtime, making the resulting asset portable and reusable without bundling an entire operating system.
A data analyst is analyzing data and would like to build conceptual associations. Which of the following is the best way to accomplish this task?
Answer(s): A
n-grams capture contiguous sequences of words, revealing which terms co-occur and form meaningful multi-word concepts. By analyzing these frequent word combinations, you directly uncover conceptual associations in the text.
Which of the following belong in a presentation to the senior management team and/or C-suite executives? (Choose two.)
Answer(s): C
Senior leaders need actionable insights and the overarching outcomes, not the implementation details, so you present your key recommendations alongside a summary of results at a high level.
During EDA, a data scientist wants to look for patterns, such as linearity, in the dat
Scatter plots display pairs of numeric values on two axes, letting you visually assess relationships and patterns, such as linear trends, between variables.
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please upload the question dump for professional machinelearning
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number 52 answer is d
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question 35 is incorrect, the correct answer is c, it even states so: explanation: when a vm is infected with ransomware, you should not restore the vm to the infected vm. this is because the ransomware will still be present on the vm, and it will encrypt the files again. you should also not restore the vm to any vm within the companys subscription. this is because the ransomware could spread to other vms in the subscription. the best way to restore a vm that is infected with ransomware is to restore it to a new azure vm. this will ensure that the ransomware is not present on the new vm.
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anyone use this? the question dont seem to follow other formats and terminology i have been studying im getting worried
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#229 in incorrect - all the customers require an annual review
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question #3 refers to vnet4 and vnet5. however, there is no vnet5 listed in the case study (testlet 2).
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qs 4 answer seems wrong- please check
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i just wrote this exam and it is still valid. the questions are exactly the same but there are about 4 or 5 questions that are answered incorrectly. so watch out for those. best of luck with your exam.
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