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New AWS-Certified-Database-Specialty Dumps Book | Pdf AWS-Certi

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    The Amazon DBS-C01 certification exam is designed for database professionals who want to demonstrate their knowledge and skills in designing, deploying, and managing database solutions on the Amazon Web Services (AWS) platform. The certification focuses on various database services offered by AWS, including Amazon Relational Database Service (RDS), Amazon DynamoDB, Amazon Aurora, and Amazon Redshift. Candidates who pass the DBS-C01 exam validate their ability to design and implement scalable, highly available, and fault-tolerant database solutions on AWS.

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    Amazon AWS Certified Database - Specialty (DBS-C01) Exam Sample Questions (Q253-Q258):

    NEW QUESTION # 253
    A company has a production Amazon Aurora Db cluster that serves both online transaction processing (OLTP) transactions and compute-intensive reports. The reports run for 10% of the total cluster uptime while the OLTP transactions run all the time. The company has benchmarked its workload and determined that a six-node Aurora DB cluster is appropriate for the peak workload.
    The company is now looking at cutting costs for this DB cluster, but needs to have a sufficient number of nodes in the cluster to support the workload at different times. The workload has not changed since the previous benchmarking exercise.
    How can a Database Specialist address these requirements with minimal user involvement?

    • A. Use the stop cluster functionality to stop all the nodes of the DB cluster during times of minimal workload. The cluster can be restarted again depending on the workload at the time.
    • B. Set up automatic scaling on the DB cluster. This will allow the number of reader nodes to adjust automatically to the reporting workload, when needed.
    • C. Split up the DB cluster into two different clusters: one for OLTP and the other for reporting. Monitor and set up replication between the two clusters to keep data consistent.
    • D. Review all evaluate the peak combined workload. Ensure that utilization of the DB cluster node is at an acceptable level. Adjust the number of instances, if necessary.

    Answer: B


    NEW QUESTION # 254
    Recently, a gaming firm purchased a popular iOS game that is especially popular during the Christmas season.
    The business has opted to include a leaderboard into the game, which will be powered by Amazon DynamoDB. The application's load is likely to increase significantly throughout the Christmas season.
    Which solution satisfies these criteria at the lowest possible cost?

    • A. DynamoDB Streams
    • B. DynamoDB with on-demand capacity mode
    • C. DynamoDB with provisioned capacity mode with Auto Scaling
    • D. DynamoDB with DynamoDB Accelerator

    Answer: C

    Explanation:
    Explanation
    "On-demand is ideal for bursty, new, or unpredictable workloads whose traffic can spike in seconds or minutes" vs.
    'DynamoDB released auto scaling to make it easier for you to manage capacity efficiently, and auto scaling continues to help DynamoDB users lower the cost of workloads that have a predictable traffic pattern."
    https://aws.amazon.com/blogs/database/amazon-dynamodb-auto-scaling-performance-and-cost-optimization-at-a


    NEW QUESTION # 255
    A large financial services company requires that all data be encrypted in transit. A Developer is attempting to connect to an Amazon RDS DB instance using the company VPC for the first time with credentials provided by a Database Specialist. Other members of the Development team can connect, but this user is consistently receiving an error indicating a communications link failure. The Developer asked the Database Specialist to reset the password a number of times, but the error persists.
    Which step should be taken to troubleshoot this issue?

    • A. Ensure that the connection is using SSL and is addressing the port where the RDS DB instance is listening for encrypted connections
    • B. Ensure that the RDS DB instance has not reached its maximum connections limit
    • C. Ensure that the RDS DB instance's subnet group includes a public subnet to allow the Developer to connect
    • D. Ensure that the database option group for the RDS DB instance allows ingress from the Developer machine's IP address

    Answer: A

    Explanation:
    Explanation
    https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/SQLServer.Concepts.General.SSL.Using.html


    NEW QUESTION # 256
    A Database Specialist is working with a company to launch a new website built on Amazon Aurora with several Aurora Replicas. This new website will replace an on-premises website connected to a legacy relational database. Due to stability issues in the legacy database, the company would like to test the resiliency of Aurora.
    Which action can the Database Specialist take to test the resiliency of the Aurora DB cluster?

    • A. Stop the DB cluster and analyze how the website responds
    • B. Use Aurora Backtrack to crash the DB cluster
    • C. Use Aurora fault injection to crash the master DB instance
    • D. Remove the DB cluster endpoint to simulate a master DB instance failure

    Answer: C

    Explanation:
    https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managing.FaultInjectionQueries.html
    "You can test the fault tolerance of your Amazon Aurora DB cluster by using fault injection queries. Fault injection queries are issued as SQL commands to an Amazon Aurora instance and they enable you to schedule a simulated occurrence of one of the following events: A crash of a writer or reader DB instance A failure of an Aurora Replica A disk failure Disk congestion When a fault injection query specifies a crash, it forces a crash of the Aurora DB instance. The other fault injection queries result in simulations of failure events, but don't cause the event to occur. When you submit a fault injection query, you also specify an amount of time for the failure event simulation to occur for."


    NEW QUESTION # 257
    A company uses an on-premises Microsoft SQL Server database to host relational and JSON data and to run daily ETL and advanced analytics. The company wants to migrate the database to the AWS Cloud. Database specialist must choose one or more AWS services to run the company's workloads.
    Which solution will meet these requirements in the MOST operationally efficient manner?

    • A. Use Amazon RDS for relational data. Use Amazon Neptune for JSON data
    • B. Use Amazon Redshift for relational data. Use Amazon S3 for JSON data.
    • C. Use Amazon Redshift for relational data. Use Amazon DynamoDB for JSON data
    • D. Use Amazon Redshift for relational data and JSON data.

    Answer: D

    Explanation:
    https://docs.aws.amazon.com/redshift/latest/dg/super-overview.htm


    NEW QUESTION # 258
    ......

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