2022 Simulation DBS-C01 Questions - DBS-C01 Latest Exam Answers

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NEW QUESTION 40
A retail company is about to migrate its online and mobile store to AWS. The company's CEO has strategic plans to grow the brand globally. A Database Specialist has been challenged to provide predictable read and write database performance with minimal operational overhead.
What should the Database Specialist do to meet these requirements?

A. Use Amazon EMR to copy the orders table data across Regions
B. Use Amazon DynamoDB global tables to synchronize transactions
C. Use Amazon Aurora Global Database to synchronize all transactions
D. Use Amazon DynamoDB Streams to replicate all DynamoDB transactions and sync them

Answer: B
Explanation:
https://aws.amazon.com/dynamodb/features/
With global tables, your globally distributed applications can access data locally in the selected regions to get single-digit millisecond read and write performance.
Not Aurora Global Database, as per this link: https://aws.amazon.com/rds/aurora/global-database/?nc1=h_ls . Aurora Global Database lets you easily scale database reads across the world and place your applications close to your users.

NEW QUESTION 41
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

NEW QUESTION 42
A single MySQL database was moved to Amazon Aurora by a business. The production data is stored in a database cluster in VPC PROD, whereas 12 testing environments are hosted in VPC TEST with the same AWS account. Testing has a negligible effect on the test dat a. The development team requires that each environment be updated nightly to ensure that each test database has daily production data.
Which migration strategy will be the quickest and least expensive to implement?

A. Run the master in Amazon Aurora MySQL using Aurora Serverless. Create 12 clones in VPC_TEST, and script the clones to be deleted and re-created nightly.
B. Run the master in Amazon Aurora MySQL. Create 12 Aurora Replicas in VPC_TEST, and script the replicas to be deleted and re-created nightly.
C. Run the master in Amazon Aurora MySQL. Create 12 clones in VPC_TEST, and script the clones to be deleted and re-created nightly.
D. Run the master in Amazon Aurora MySQL. Take a nightly snapshot, and restore it into 12 databases in VPC_TEST using Aurora Serverless.

Answer: C
Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Managing.Clone.html

NEW QUESTION 43
A company is running a two-tier ecommerce application in one AWS account. The web server is deployed using an Amazon RDS for MySQL Multi-AZ DB instance. A Developer mistakenly deleted the database in the production environment. The database has been restored, but this resulted in hours of downtime and lost revenue.
Which combination of changes in existing IAM policies should a Database Specialist make to prevent an error like this from happening in the future? (Choose three.)

A. Enable multi-factor authentication for sensitive operations to access sensitive resources and API operations
B. Use policy conditions to restrict access to selective IP addresses
C. Use AccessList Controls policy type to restrict users for database instance deletion
D. Enable AWS CloudTrail logging and Enhanced Monitoring
E. Grant least privilege to groups, users, and roles
F. Allow all users to restore a database from a backup that will reduce the overall downtime to restore the database

Answer: A,B,E
Explanation:
Explanation
https://aws.amazon.com/blogs/database/using-iam-multifactor-authentication-with-amazon-rds/
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/security_iam_id-based-policy-htmlhttps://docs.aws

NEW QUESTION 44
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