Amazon AWS SysOps Set 5

1.

You are managing a legacy application Inside VPC with hard coded IP addresses in its configuration. Which two mechanisms will allow the application to failover to new instances without the need for reconfiguration?
Choose 2 answers

Create an ELB to reroute traffic to a failover instance Create a secondary ENI that can be moved to a failover instance Use Route53 health checks to fail traffic over to a failover instance Assign a secondary private IP address to the primary ENIO that can De moved to a failover instance

2.

You are designing a system that has a Bastion host. This component needs to be highly available without human intervention. Which of the following approaches would you select?

Run the bastion on two instances one in each AZ Run the bastion on an active Instance in one AZ and have an AMI ready to boot up in the event of failure Configure the bastion instance in an Auto Scaling group Specify the Auto Scaling group to include multiple AZs but have a min-size of 1 and maxsizeof 1 Configure an ELB in front of the bastion instance

3.

You have a web-style application with a stateless but CPU and memory-intensive web tier running on a cc2 8xlarge EC2 instance inside of a VPC The instance when under load is having problems returning requests within the SLA as defined by your business The application maintains its state in a DynamoDB table, but the data tier is properly provisioned and responses are consistently fast. How can you best resolve the issue of the application responses not meeting your SLA?

Add another cc2 8xlarge application instance, and put both behind an Elastic Load Balancer Move the cc2 8xlarge to the same Availability Zone as the DynamoDB table Cache the database responses in ElastiCache for more rapid access Move the database from DynamoDB to RDS MySQL in scale-out read-replica configuration

4.

Which services allow the customer to retain full administrative privileges of the underlying EC2 instances?
Choose 2 answers

Amazon Elastic Map Reduce Elastic Load Balancing AWS Elastic Beanstalk I" Amazon Elasticache Amazon Relational Database service

5.

You have two Elastic Compute Cloud (EC2) instances inside a Virtual Private Cloud (VPC) in the same Availability Zone (AZ) but in different subnets.One instance is running a database and the other instance an application that will interface with the database. You want to confirm that they can talk to each other for your application to work properly. Which two things do we need to confirm in the VPC settings so that these EC2 instances can communicate inside the VPC?
Choose 2 answers

A network ACL that allows communication between the two subnets. Both instances are the same instance class and using the same Key-pair. That the default route is set to a NAT instance or internet Gateway (IGW) for them to communicate. Security groups are set to allow the application host to talk to the database on the right port/protocol.

Amazon AWS SysOps Set 5

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