Recent questions

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Q: Which of the following is true about the Stream.collect() method in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following interfaces represents a function that accepts a long-valued argument and produces a result of the specified type in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the Optional class in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following interfaces represents a supplier of objects in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following interfaces represents a sequence of primitive double values in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about method references in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the StringJoiner class in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the Files.walk() method in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the Stream.concat() method in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about parallel streams in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: What is the purpose of the Stream.Builder interface in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following interfaces is not a subtype of the Function interface in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is not a functional interface in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the Optional class in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the collect() method in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: Which of the following is true about the reduce() method in Java 8?

asked Apr 30 in JAVA by john ganales

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Q: What is the difference between peek() and forEach() in a stream pipeline?

asked Apr 30 in JAVA by john ganales

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Q: A company is planning on using Amazon Kinesis firehose to stream data into an S3 bucket. They need the data to be transformed first before it can be sent to the S3 bucket. Which of the following would be used for the transformation process?

asked Apr 29 in AWS by DavidAnderson

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Q: Your company has large data sets that need to be streamed directly into Amazon S3. Which of the following would be the easiest way for such a requirement?

asked Apr 29 in AWS by DavidAnderson

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Q: Your team is developing a solution that will make use of DynamoDB tables. Currently, the application is designed to perform scans on the entire table. Which of the following can be done to re-design and improve the application's performance when it interacts with the DynamoDB table?

asked Apr 29 in AWS by DavidAnderson

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Q: Your team is developing a solution that will make use of DynamoDB tables. Due to the nature of the application, the data is needed across a couple of regions across the world. Which of the following would help reduce the latency of requests to DynamoDB from different regions?

asked Apr 29 in AWS by DavidAnderson

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Q: How many read request units of the DynamoDB table are required for an item up to 8 KB using one strongly consistent read request?

asked Apr 29 in AWS by DavidAnderson

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Q: Your company has asked you to maintain an application using Elastic Beanstalk. At times, you normally hit the application version limit when deploying new versions of the application. Which of the following is the most effective way to manage this issue?

asked Apr 29 in AWS by DavidAnderson

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Q: Your company has asked you to maintain an application using Elastic Beanstalk. They have mentioned that when updates are made to the application, the infrastructure maintains its full capacity. Which of the following deployment methods should you use for this requirement?

asked Apr 29 in AWS by DavidAnderson

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Q: You've developed a Lambda function and now want to debug it, after the execution completes. You add the necessary print statements in the code to assist in the debugging process. You go to Cloudwatch logs but there are no logs for the Lambda function.

asked Apr 29 in AWS by DavidAnderson

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Q: You are working on an application that uses Amazon Cognito. Data in Amazon Cognito needs to be further analyzed using Amazon Redshift. You are planning to use Kinesis streams for this purpose.

asked Apr 29 in AWS by DavidAnderson

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Q: Your company is planning to use the Simple Storage Service to host objects that users will access. You need to store the photos based on the date and you also need the folder structure to be concise. There is a speculation that there would be roughly 6000 GET requests per second.

asked Apr 29 in AWS by DavidAnderson

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Q: Your company currently stores its objects in S3.The current request rate is around 11000 GET requests per second. There is now a mandate for objects to be encrypted at rest. So you enable encryption using KMS. There are now performance issues being encountered.

asked Apr 29 in AWS by DavidAnderson

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Q: Your company is planning to use the Simple Storage Service to store objects that will be accessed by users. There is speculation that there would be roughly 6000 GET requests per second. Which of the following could be used to ensure optimal performance? (Select TWO)

asked Apr 29 in AWS by DavidAnderson

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Q: Which of the following is a valid method reference in Java 8?

asked Apr 28 in JAVA by Robin

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