BDS-C00 Online Practice Questions and Answers

An administrator is processing events in near real-time using Kinesis streams and Lambda. Lambda intermittently fails to process batches from one of the shards due to a 5-munite time limit.

What is a possible solution for this problem?

A. Add more Lambda functions to improve concurrent batch processing.

B. Reduce the batch size that Lambda is reading from the stream.

C. Ignore and skip events that are older than 5 minutes and put them to Dead Letter Queue (DLQ).

D. Configure Lambda to read from fewer shards in parallel.

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 capture 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 e-commerce application in Oregon to write replica log files in each other region.

B. Use Amazon S3 bucket replication to consolidate log entries and build a single model in Oregon.

C. Use Kinesis as a buffer for web logs and replicate logs to the Kinesis stream of a neighboring region.

D. Use the CloudWatch Logs agent to consolidate logs into a single CloudWatch Logs group.

A solutions architect for a logistics organization ships packages from thousands of suppliers to end customers. The architect is building a platform where suppliers can view the status of one or more of their shipments. Each supplier can have multiple roles that will only allow access to specific fields in the resulting information.

Which strategy allows the appropriate level of access control and requires the LEAST amount of management work?

A. Send the tracking data to Amazon Kinesis Streams. Use AWS Lambda to store the data in an Amazon DynamoDB Table. Generate temporary AWS credentials for the suppliers' users with AWS STS, specifying fine-grained security policies to limit access only to their applicable data.

B. Send the tracking data to Amazon Kinesis Firehose. Use Amazon S3 notifications and AWS Lambda to prepare files in Amazon S3 with appropriate data for each supplier's roles. Generate temporary AWS credentials for the suppliers' users with AWS STS. Limit access to the appropriate files through security policies.

C. Send the tracking data to Amazon Kinesis Streams. Use Amazon EMR with Spark Streaming to store the data in HBase. Create one table per supplier. Use HBase Kerberos integration with the suppliers' users. Use HBase ACL-based security to limit access for the roles to their specific table and columns.

D. Send the tracking data to Amazon Kinesis Firehose. Store the data in an Amazon Redshift cluster. Create views for the suppliers' users and roles. Allow suppliers access to the Amazon Redshift cluster using a user limited to the applicable view.

How should an Administrator BEST architect a large multi-layer Long Short-Term Memory (LSTM) recurrent neural network (RNN) running with MXNET on Amazon EC2? (Choose two.)

A. Use data parallelism to partition the workload over multiple devices and balance the workload within the GPUs.

B. Use compute-optimized EC2 instances with an attached elastic GPU.

C. Use general purpose GPU computing instances such as G3 and P3.

D. Use processing parallelism to partition the workload over multiple storage devices and balance the workload within the GPUs.

An advertising organization uses an application to process a stream of events that are received from

clients in multiple unstructured formats.

The application does the following:

Transforms the events into a single structured format and streams them to Amazon Kinesis for real-time

analysis.

Stores the unstructured raw events from the log files on local hard drivers that are rotated and uploaded to

Amazon S3.

The organization wants to extract campaign performance reporting using an existing Amazon redshift

cluster.

Which solution will provide the performance data with the LEAST number of operations?

A. Install the Amazon Kinesis Data Firehose agent on the application servers and use it to stream the log files directly to Amazon Redshift.

B. Create an external table in Amazon Redshift and point it to the S3 bucket where the unstructured raw

events are stored.

C. Write an AWS Lambda function that triggers every hour to load the new log files already in S3 to Amazon redshift.

D. Connect Amazon Kinesis Data Firehose to the existing Amazon Kinesis stream and use it to stream the event directly to Amazon Redshift.

A user wants to make so that whenever the CPU utilization of the AWS EC2 instance is above 90%, the redlight of his bedroom turns on. Which of the below mentioned AWS services is helpful for this purpose?

A. AWS CloudWatch + AWS SES

B. AWS CloudWatch + AWS SNS

C. It is not possible to configure the light with the AWS infrastructure services

D. AWS CloudWatch and a dedicated software turning on the light

A user has created a launch configuration for Auto Scaling where CloudWatch detailed monitoring is disabled. The user wants to now enable detailed monitoring. How can the user achieve this?

A. Update the Launch config with CLI to set InstanceMonitoringDisabled = false

B. The user should change the Auto Scaling group from the AWS console to enable detailed monitoring

C. Update the Launch config with CLI to set InstanceMonitoring.Enabled = true

D. Create a new Launch Config with detail monitoring enabled and update the Auto Scaling group

Is there any way to own a direct connection to Amazon Web Services?

A. You can create an encrypted tunnel to VPC, but you don't own the connection.

B. Yes, it's called Amazon Dedicated Connection.

C. No, AWS only allows access from the public Internet.

D. Yes, it's called Direct Connect.

You have a video Trans coding application running on Amazon EC2. Each instance pools a queue to find out which video should be Trans coded, and then runs a Trans coding process.

If this process is interrupted, the video will be Trans coded by another instance based on the queuing system. You have a large backlog of videos which need to be Trans coded and would like to reduce this backlog by adding more instances. You will need these instances only until the backlog is reduced. Which type of Amazon EC2 instance should you use to reduce the backlog in the most cost-effective way?

A. Dedicated instances

B. Spot instances

C. On-demand instances

D. Reserved instances

A system admin is planning to setup event notifications on RDS. Which of the below mentioned services will help the admin setup notifications?

A. AWS SES

B. AWS Cloudtrail

C. AWS CloudWatch

D. AWS SNS