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Question 176

You have successfully deployed to production a large and complex TensorFlow model trained on tabular dat a. You want to predict the lifetime value (LTV) field for each subscription stored in the BigQuery table named subscription. subscriptionPurchase in the project named my-fortune500-company-project.
You have organized all your training code, from preprocessing data from the BigQuery table up to deploying the validated model to the Vertex AI endpoint, into a TensorFlow Extended (TFX) pipeline. You want to prevent prediction drift, i.e., a situation when a feature data distribution in production changes significantly over time. What should you do?

A.Add a model monitoring job where 10% of incoming predictions are sampled 24 hours.
B.Add a model monitoring job where 90% of incoming predictions are sampled 24 hours.
C.Implement continuous retraining of the model daily using Vertex AI Pipelines.
D.Add a model monitoring job where 10% of incoming predictions are sampled every hour.

Question 177

Your organization's call center has asked you to develop a model that analyzes customer sentiments in each call. The call center receives over one million calls daily, and data is stored in Cloud Storage. The data collected must not leave the region in which the call originated, and no Personally Identifiable Information (Pll) can be stored or analyzed. The data science team has a third-party tool for visualization and access which requires a SQL ANSI-2011 compliant interface. You need to select components for data processing and for analytics. How should the data pipeline be designed?

A.1 = Dataflow, 2 = BigQuery
B.1 = Dataflow, 2 = Cloud SQL
C.1 = Cloud Function, 2 = Cloud SQL
D.1 = Pub/Sub, 2 = Datastore

Question 178

You are an ML engineer at a manufacturing company. You need to build a model that identifies defects in products based on images of the product taken at the end of the assembly line. You want your model to preprocess the images with lower computation to quickly extract features of defects in products. Which approach should you use to build the model?

A.Reinforcement learning
B.Recommender system
C.Recurrent Neural Networks (RNN)
D.Convolutional Neural Networks (CNN)

Correct Answer: D

Option A is incorrect because reinforcement learning is not a suitable approach to build a model that identifies defects in products based on images of the product taken at the end of the assembly line. Reinforcement learning is a type of machine learning that learns from its own actions and rewards, rather than from labeled data or explicit feedback1. Reinforcement learning is more suitable for problems that involve sequential decision making, such as games, robotics, or control systems1. However, defect detection is a problem that involves image classification or segmentation, which requires supervised learning, not reinforcement learning.
Option B is incorrect because a recommender system is not a relevant approach to build a model that identifies defects in products based on images of the product taken at the end of the assembly line. A recommender system is a system that suggests items or actions to users based on their preferences, behavior, or context2. A recommender system is more suitable for problems that involve personalization, such as e-commerce, entertainment, or social media2. However, defect detection is a problem that involves image classification or segmentation, which requires supervised learning, not recommender system.
Option C is incorrect because recurrent neural networks (RNN) are not the most efficient approach to build a model that identifies defects in products based on images of the product taken at the end of the assembly line. RNNs are a type of neural networks that can process sequential data, such as text, speech, or video, by maintaining a hidden state that captures the temporal dependencies3. RNNs are more suitable for problems that involve natural language processing, speech recognition, or video analysis3. However, defect detection is a problem that involves image classification or segmentation, which does not require temporal dependencies, but rather spatial dependencies. Moreover, RNNs are computationally expensive and prone to vanishing or exploding gradients4.
Option D is correct because convolutional neural networks (CNN) are the best approach to build a model that identifies defects in products based on images of the product taken at the end of the assembly line. CNNs are a type of neural networks that can process image data, by applying convolutional filters that extract local features and reduce the dimensionality of the data5. CNNs are more suitable for problems that involve image classification, object detection, or segmentation5. CNNs can preprocess the images with lower computation to quickly extract features of defects in products, by using techniques such as pooling, dropout, or batch normalization6.
Reference:
Reinforcement learning
Recommender system
Recurrent neural network
Vanishing and exploding gradients
Convolutional neural network
CNN techniques
[Defect detection]
[Image classification]
[Image segmentation]

Question 179

You recently deployed a model lo a Vertex Al endpoint and set up online serving in Vertex Al Feature Store. You have configured a daily batch ingestion job to update your featurestore During the batch ingestion jobs you discover that CPU utilization is high in your featurestores online serving nodes and that feature retrieval latency is high. You need to improve online serving performance during the daily batch ingestion. What should you do?

A.Schedule an increase in the number of online serving nodes in your featurestore prior to the batch ingestion jobs.
B.Enable autoscaling of the online serving nodes in your featurestore
C.Enable autoscaling for the prediction nodes of your DeployedModel in the Vertex Al endpoint.
D.Increase the worker counts in the importFeaturevalues request of your batch ingestion job.

Question 180

Your team has been tasked with creating an ML solution in Google Cloud to classify support requests for one of your platforms. You analyzed the requirements and decided to use TensorFlow to build the classifier so that you have full control of the model's code, serving, and deployment. You will use Kubeflow pipelines for the ML platform. To save time, you want to build on existing resources and use managed services instead of building a completely new model. How should you build the classifier?

A.Use the Natural Language API to classify support requests
B.Use AutoML Natural Language to build the support requests classifier
C.Use an established text classification model on Al Platform to perform transfer learning
D.Use an established text classification model on Al Platform as-is to classify support requests