A company uses an Amazon EMR cluster to process data once a day. The raw data comes from Amazon S3, and the resulting processed data is also stored in Amazon S3. The processing must complete within 4 hours; currently, it only takes 3 hours. However, the processing time is taking 5 to 10 minutes. longer each week due to an increasing volume of raw data.
The team is also concerned about rising costs as the compute capacity increases. The EMR cluster is currently running on three m3.xlarge instances (one master and two core nodes).
Which of the following solutions will reduce costs related to the increasing compute needs?
Correct Answer:
B
A company stores sales transaction data in Amazon DynamoDB tables. To detect anomalous behaviors and respond quickly, all changes to the items stored in the DynamoDB tables must be logged within 30 minutes. Which solution meets the requirements?
Correct Answer:
C
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html
A Solution Architect is designing a deployment strategy for an application tier and gas the following requirements.
* The application code will need a 500 HB static dataset to be present before application startup.
* The application tier be able to scale Up and down based on demand with as little startup time as possible.
* The development team should be able to update the code multiple times each day.
* Critical operating system (OS) patches must be installed within 48 hours of being released. Which deployment strategy meets these requirements?
Correct Answer:
C
A company is implementing a multi-account strategy; however, the Management team has expressed concerns that services like DNS may become overly complex. The company needs a solution that allows private DNS to be shared among virtual private clouds (VPCs) in different accounts. The company will have approximately 50 accounts in total.
What solution would create the LEAST complex DNS architecture and ensure that each VPC can resolve all AWS resources?
Correct Answer:
A
https://aws.amazon.com/blogs/networking-and-content-delivery/centralized-dns-management-of-hybrid-cloud-w
A company has a 24 TB MySQL database in its on-premises data center that grows at the rate of 10 GB per day. The data center is connected to the company’s AWS infrastructure with a 50 Mbps VPN connection.
The company is migrating the application and workload to AWS. The application code is already installed and tested on Amazon EC2. The company now needs to migrate the database and wants to go live on AWS within 3 weeks.
Which of the following approaches meets the schedule with LEAST downtime?
Correct Answer:
C