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NEW QUESTION 37
A small startup firm wishes to move a 4 TB MySQL database from on-premises to AWS through an Amazon RDS for MySQL DB instance.
Which migration approach would result in the LEAST amount of downtime?

A. Deploy a new Amazon EC2 instance, install the MySQL software on the EC2 instance, and configure networking for access from the on-premises data center. Use the mysqldump utility to create a snapshot of the on-premises MySQL server. Copy the snapshot into an Amazon S3 bucket and import the snapshot into a new RDS for MySQL DB instance using the MySQL utilities running on an EC2 instance. Point the application to the DB instance.B. Deploy a new RDS for MySQL DB instance and configure it for access from the on-premises data center. Use the mysqldump utility to create an initial snapshot from the on-premises MySQL server, and copy it to an Amazon S3 bucket. Import the snapshot into the DB instance using the MySQL utilities running on an Amazon EC2 instance. Establish replication into the new DB instance using MySQL replication. Stop application access to the on-premises MySQL server and let the remaining transactions replicate over. Point the application to the DB instance.C. Deploy a new Amazon EC2 instance, install the MySQL software on the EC2 instance, and configure networking for access from the on-premises data center. Use the mysqldump utility to create a snapshot of the on-premises MySQL server. Copy the snapshot into the EC2 instance and restore it into the EC2 MySQL instance. Use AWS DMS to migrate data into a new RDS for MySQL DB instance. Point the application to the DB instance.D. Deploy a new RDS for MySQL DB instance and configure it for access from the on-premises data center. Use the mysqldump utility to create an initial snapshot from the on-premises MySQL server, and copy it to an Amazon S3 bucket. Import the snapshot into the DB instance utilizing the MySQL utilities running on an Amazon EC2 instance. Immediately point the application to the DB instance.

Answer: B

Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/MySQL.Procedural.Importing.NonRDSRepl.html
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/MySQL.Procedural.Importing.External.Repl.html

 

NEW QUESTION 38
A Database Specialist is constructing a new Amazon Neptune DB cluster and tries to load data from Amazon S3 using the Neptune bulk loader API. The Database Specialist is confronted with the following error message:
Unable to establish a connection to the s3 endpoint. The source URL is s3:/mybucket/graphdata/ and the region code is us-east-1. Kindly confirm your Configuration S3.
Which of the following activities should the Database Specialist take to resolve the issue? (Select two.)

A. Check that Amazon EC2 has an IAM role granting read access to Amazon S3B. Check that an Amazon S3 VPC endpoint existsC. Check that Amazon S3 has an IAM role granting read access to NeptuneD. Check that a Neptune VPC endpoint existsE. Check that Neptune has an IAM role granting read access to Amazon S3

Answer: B,E

Explanation:
https://docs.aws.amazon.com/neptune/latest/userguide/bulk-load-tutorial-IAM.html
https://docs.aws.amazon.com/neptune/latest/userguide/bulk-load-data.html
"An IAM role for the Neptune DB instance to assume that has an IAM policy that allows access to the data files in the S3 bucket. The policy must grant Read and List permissions." "An Amazon S3 VPC endpoint. For more information, see the Creating an Amazon S3 VPC Endpoint section."

 

NEW QUESTION 39
A database specialist needs to delete user data and sensor data 1 year after it was loaded in an Amazon DynamoDB table. TTL is enabled on one of the attributes. The database specialist monitors TTL rates on the Amazon CloudWatch metrics for the table and observes that items are not being deleted as expected.
What is the MOST likely reason that the items are not being deleted?

A. The TTL attribute's value is set with an expiration of 1 year.B. The TTL attribute's value is set as a Number data type.C. The TTL attribute's value is a timestamp in the Unix epoch time format in seconds.D. The TTL attribute's value is set as a Binary data type.

Answer: D

Explanation:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html#time-to-live-ttl-before-you-start-formatting

 

NEW QUESTION 40
An online gaming company is planning to launch a new game with Amazon DynamoDB as its data store. The database should be designated to support the following use cases:
Update scores in real time whenever a player is playing the game. Retrieve a player's score details for a specific game session.
A Database Specialist decides to implement a DynamoDB table. Each player has a unique user_id and each game has a unique game_id.
Which choice of keys is recommended for the DynamoDB table?

A. Create a composite primary key with game_id as the partition key and user_id as the sort keyB. Create a global secondary index with user_id as the partition keyC. Create a global secondary index with game_id as the partition keyD. Create a composite primary key with user_id as the partition key and game_id as the sort key

Answer: D

Explanation:
https://aws.amazon.com/blogs/database/amazon-dynamodb-gaming-use-cases-and-design-patterns/
"EA uses the user ID as the partition key and primary key (a 1:1 modeling pattern)." https://aws.amazon.com/blogs/database/choosing-the-right-dynamodb-partition-key/
"Partition key and sort key: Referred to as a composite primary key, this type of key is composed of two attributes. The first attribute is the partition key, and the second attribute is the sort key."

 

NEW QUESTION 41
A database professional maintains a fleet of Amazon RDS database instances that are configured to utilize the default database parameter group. A database expert must connect a custom parameter group with certain database instances.
When will the instances be allocated to this new parameter group once the database specialist performs this change?

A. Within 24 hours after the change is made to the parameter groupB. After the DB instances are manually rebootedC. In the next scheduled maintenance window of the DB instancesD. Instantaneously after the change is made to the parameter group

Answer: B

Explanation:
Explanation
When you associate a new DB parameter group with a DB instance, the modified static and dynamic parameters are applied only after the DB instance is rebooted.

 

NEW QUESTION 42
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