AWS Certified SysOps Administrator Official Study Guide. Cole Stephen
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Название: AWS Certified SysOps Administrator Official Study Guide
Автор: Cole Stephen
Издательство: Автор
Жанр: Зарубежная образовательная литература
isbn: 9781119377436
isbn:
D. Two Provisioned Amazon EBS (io1) 10 TB volumes with 5,000 IOPS per volume and RAID0 striping
8. What is the purpose of Amazon Elastic Compute Cloud (Amazon EC2) user data?
A. To install software on the Amazon EC2 instance at boot
B. To list any public keys associated with the instance
C. To show a Public IP address to an Amazon EC2 instance
D. To show the localhost name for the instance
9. You have created an Amazon Virtual Private Cloud (Amazon VPC) with the CIDR of 10.0.0.0/16. You now need to divide that VPC into a Public Subnet and a Private Subnet. Which one below is a valid combination?
A. Public 10.1.0.0/24
Private 10.2.0.0/24
B. Public 10.0.0.1/24
Private 10.0.0.2/24
C. Public 10.0.1.0/24
Private 10.0.2.0/24
D. Public 10.0.1.0/16
Private 10.0.2.0/16
10. You have created an Auto Scaling group with a minimum of two Amazon Elastic Compute Cloud (Amazon EC2) instances, a maximum of six instances, and a desired capacity of four instances. Your instances take 20 minutes to launch, and they take three minutes to start once built. How can you configure autoscaling to start and stop instances versus launching new instances from Amazon Machine Instances (AMIs)?
A. Create a new Auto Scaling launch configuration, and configure the Auto Scaling group to start the instances.
B. Edit the Auto Scaling group’s launch configuration to start instances.
C. This is not possible, as Auto Scaling cannot stop and start instances.
D. Configure the Auto Scaling group to use the Amazon EC2 recovery service.
11. You have a Multi-AZ Amazon Relational Database Service (Amazon RDS) database running MySQL. During a planned outage, how does AWS ensure that, when switching from the primary DB to the standby, it will not affect your application servers?
A. Amazon RDS uses Elastic IP addresses that are detached from the primary database and then attached to the standby instance. This promotes the standby to be the primary.
B. Amazon RDS uses the Elastic Queue Service to process requests from application servers and send them to database engines. Since this is done at the Hypervisor, no user intervention is required.
C. Amazon RDS runs both database instances independently, and each has their own connection string. You will have to update the code on your application servers because AWS has no visibility above the Hypervisor.
D. Amazon RDS uses Amazon Route 53 to create connection strings and will automatically update the IP address to point at the standby instance.
12. When attaching an Amazon Elastic Block Store (Amazon EBS) volume to an Amazon Elastic Compute Cloud (Amazon EC2) instance, what conditions must be true?
A. The Amazon EBS volume must be in the same Availability Zone (AZ) as the instance.
B. The Amazon EBS volume must be in the same account as the instance.
C. The Amazon EBS volume must be assigned to an AMI ID.
D. The Amazon EBS volume must have the same security group as the instance.
13. You’ve been asked to migrate a busy Amazon Relational Database Service (Amazon RDS) for MySQL database to Amazon Aurora. You need to do so with little downtime and with no lost data. What is the best way to meet the above requirements?
A. Take a snapshot of the MySQL Amazon RDS instance. Use that snapshot to create an Amazon Aurora Read Replica of the Amazon RDS for MySQL database. Once replication catches up, make the Aurora Read Replica into a standalone Amazon Aurora DB cluster, and point the application to the new Amazon Aurora DB cluster.
B. Create an Amazon Simple Storage Service (Amazon S3) bucket, and upload the Amazon RDS database as a flat file dump into the bucket. Restore from the dump to a new Amazon Aurora database.
C. Restore the most recent Amazon RDS automated backup to a new Amazon Aurora instance. Stop the application, point the application at the new Amazon Aurora DB instance, and start the application.
D. Take a snapshot. Restore the snapshot to a new Amazon Aurora instance. Point the application to the new Amazon Aurora DB instance, and start the application.
14. In case of a failure of the primary node of an Amazon Relational Database Service (Amazon RDS) instance with an RDS Multi-AZ deployment, you must do the following to recover:
A. Nothing. The node will automatically fail over to each of the three included read replicas in alternative regions.
B. Nothing. The node will automatically fail over to the standby instance; a short amount of downtime may occur.
C. Manually stand up a new instance by restoring from the most recent automatic backup.
D. Manually initiate the failover using the AWS CLI initialize-rds-failover command.
15. As part of an application requirement that you’ve been given, you must deploy a new Amazon DynamoDB database. You must do so in a highly available manner. How do you deploy this database?
A. Deploy the Amazon DynamoDB database in a single Availability Zone (AZ). Set up an automatic backup job to Amazon S3 and an automatic restore job from S3 to a DynamoDB database in a second AZ.
B. Use the Amazon DynamoDB Local version in two AZs.
C. You can’t use Amazon DynamoDB for HA requirements.
D. Deploy an Amazon DynamoDB database in the desired region.
16. Your application has a database that has been reported as being slow by your end users. Upon investigation, you find that the database is seeing an extraordinarily high volume of read activity. What is one way to overcome this constraint?
A. Place an Amazon CloudFront distribution between the application layer and the database.
B. Use AWS Shield to protect against too many reads from the application layer to the database.
C. Use Amazon ElastiCache to provide a cache for frequent reads between the application layer and database.
D. Use AWS Route53 Latency Based Routing to direct traffic to the least latent database node.
17. You have assigned an Elastic IP to an Amazon Elastic Compute Cloud (Amazon EC2) instance. You then terminate that instance. What happens to that Elastic IP?
A. The Elastic IP remains associated with the account, and you start getting charged for it.
B. The Elastic IP remains associated with the account.
C. СКАЧАТЬ