1. You need to monitor the performance of your EC2 instances and ensure that your applications are running smoothly. Which of the following statements about Amazon CloudWatch is true?

A) Amazon CloudWatch can only monitor metrics for Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS).
B) Amazon CloudWatch does not provide alerting and notification capabilities for metric thresholds.
C) Amazon CloudWatch can only monitor metrics for EC2 instances that are running Amazon Linux 2.
D) Amazon CloudWatch can monitor CPU utilization, disk I/O, and network traffic for EC2 instances.



2. Which of the following statements accurately describe Amazon Textract?

A) Amazon Textract is an optical character recognition (OCR) service that only extracts text from printed documents.
B) Amazon Textract is a fully-managed machine learning service that automatically extracts text and data from scanned documents.
C) Amazon Textract is a natural language processing (NLP) service that extracts insights and sentiments from scanned documents.
D) Amazon Textract is a document storage service that provides secure and scalable storage for scanned documents.



3. What is the purpose of regularization in machine learning, and what are some common regularization techniques?

A) Regularization is used to decrease the complexity of a model in order to prevent overfitting, and common techniques include L1 and L2 regularization.
B) Regularization is used to increase the complexity of a model in order to prevent overfitting, and common techniques include dropout and early stopping.
C) Regularization is used to increase the complexity of a model in order to better fit the training data, and common techniques include L1 and L2 regularization.
D) Regularization is not necessary in modern machine learning, as models are already optimized for generalization.



4. What is the maximum size of a single record that can be sent to Amazon Kinesis Data Streams?

A) 4 KB
B) 100 KB
C) 512 KB
D) 10 MB
E) 1 MB


5. Which of the following is a feature of Amazon S3?

A) No limit to the number of files in a bucket
B) Serverless file system
C) Run code in response to events
D) Ability to host static websites