Free Amazon AWS-Big-Data-Specialty Exam Dumps Questions & Answers

A company hosts a portfolio of e-commerce websites across the Oregon, N.Virginia, Ireland and Sydney AWS regions. Each site keeps log files that captures user behavior. The company has built an application that generates batches of product recommendations with collaborative filtering in Oregon. Oregon was selected because the flagship site is hosted there and provides the largest collection of data to train machine learning models against. The other regions do NOT have enough historic data to train accurate machine learning models.
Which set of data processing steps improves recommendations for each region?

• A.  Use the CloudWatch Logs agent to consolidate logs into a single CloudWatch logs group
• B.  Use the e-commerce application in Oregon to write replica log files in each other region
• C.  Use Kinesis as a butler for web logs and replicate logs to the Kinesis streams of a neighboring region
• D.  Use Amazon S3 bucket replication to consolidate log entries and builds a single model in Oregon

A large grocery distributor receives daily depletion reports from the field in the form of gzip archives of CSV files uploading to Amazon S3. The files range from 500MB to 5GB. These files are processes daily by an EMR job.
Recently it has been observed that the file sizes vary, and the EMR jobs take too long. The distributor needs to tune and optimize the data processing workflow with this limited information to improved the performance of the EMR job.
Which recommendation should an administrator provide?

• A.  Use Avro rather than gzip for the archives
• B.  Use bzip2 or Snappy rather than gzip for the archives
• C.  Reduce the HDFS block size to increase the number of task processors
• D.  Decompress the gzip archives and store the data as CSV files

A real-time bidding company is rebuilding their monolithic application and is focusing on serving real-time data. A large number of reads and writes are generated from thousands of concurrent users who follow items and bid on the company's sale offers.
The company is experiencing high latency during special event spikes, with millions of concurrent users.
The company needs to analyze and aggregate a part of the data in near real time to feed an internal dashboard.
What is the BEST approach for serving and analyzing data, considering the constraint of the row latency on the highly demanded data?

• A.  Use Amazon Redshift with a DC2 node type and a multi-mode cluster. Create an Amazon EC2 instance with pgpoo1 installed. Create an Amazon ElastiCache cluster and route read requests through pgpoo1, and use Amazon Redshift for analysis.
• B.  Use Amazon RDS with Multi Availability Zone. Provisioned IOPS EBS volume for storage. Enable up to five read replicas to serve read-only content quickly. Use Amazon EMR with Sqoop to import Amazon RDS data into HDFS for analysis.
• C.  Use Amazon DynamoDB to store real-time data with Amazon DynamoDB. Accelerator to serve content quickly. use Amazon DynamoDB Streams to replay all changes to the table, process and stream to Amazon Elasti search Service with AWS Lambda.
• D.  Use Amazon Aurora with Multi Availability Zone and read replicas. Use Amazon ElastiCache in front of the read replicas to serve read-only content quickly. Use the same database as datasource for the dashboard.

A user is receiving a notification from the RDS DB whenever there is a change in the DB security group. The user does not want to receive these notifications for only a month. Thus, he does not want to delete the notification. How can the user configure this?

• A.  Change the Disable button for notification to "Yes" in the RDS console
• B.  Change the Enable button for notification to "No" in the RDS console
• C.  Set the send mail flag to false in the DB event notification console
• D.  The only option is to delete the notification from the console

A user is planning to host a mobile game on EC2 which sends notifications to active users on either high score or the addition of new features. The user should get this notification when he is online on his mobile device.
Which of the below mentioned AWS services can help achieve this functionality?

• A.  AWS Simple Email Service
• B.  AWS Simple Queue Service
• C.  AWS Simple Notification Service
• D.  AWS Mobile Communication Service