AWS-Certified-Solutions-Architect-Professional Free Practice Test

An organization is planning to host an application on the AWS VPC. The organization wants dedicated instances. However, an AWS consultant advised the organization not to use dedicated instances with VPC as the design has a few limitations. Which of the below mentioned statements is not a limitation of dedicated instances with VPC?

1. A. All instances launched with this VPC will always be dedicated instances and the user cannot use a default tenancy model for them.
2. B. It does not support the AWS RDS with a dedicated tenancy VPC.
3. C. The user cannot use Reserved Instances with a dedicated tenancy model.
4. D. The EBS volume will not be on the same tenant hardware as the EC2 instance though the user has configured dedicated tenancy.

Correct Answer: C
The Amazon Virtual Private Cloud (Amazon VPC) allows the user to define a virtual networking environment in a private, isolated section of the Amazon Web Services (AWS) cloud. The user has complete control over the virtual networking environment. Dedicated instances are Amazon EC2 instances that run in a Virtual Private Cloud (VPC) on hardware that is dedicated to a single customer. The cIient’s dedicated instances are physically isolated at the host hardware level from instances that are not dedicated instances as well as from instances that belong to other AWS accounts.
All instances launched with the dedicated tenancy model of VPC will always be dedicated instances. Dedicated tenancy has a limitation that it may not support a few services, such as RDS. Even the EBS will not be on dedicated hardware. However the user can save some cost as well as reserve some capacity
by using a Reserved Instance model with dedicated tenancy.
Reference: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/dedicated-instance.html

You are designing a social media site and are considering how to mitigate distributed denial-of-service (DDoS) attacks. Which of the below are viable mitigation techniques? (Choose 3 answers)

1. A. Add multiple elastic network interfaces (ENIs) to each EC2 instance to increase the network bandwidth.
2. B. Use dedicated instances to ensure that each instance has the maximum performance possible.
3. C. Use an Amazon C|oudFront distribution for both static and dynamic content.
4. D. Use an Elastic Load Balancer with auto scaling groups at the we
5. E. App and Amazon Relational Database Service (RDS) tiers
6. F. Add alert Amazon CIoudWatch to look for high Network in and CPU utilization.
7. G. Create processes and capabilities to quickly add and remove rules to the instance OS firewal

Correct Answer: CEF

How much memory does the cr1.8xIarge instance type provide?

1. A. 224 GB
2. B. 124 GB
3. C. 184 GB
4. D. 244 GB

Correct Answer: D
The CR1 instances are part of the memory optimized instances. They offer lowest cost per GB RAM among all the AWS instance families. CR1 instances are part of the new generation of memory optimized instances, which can offer up to 244 GB RAM and run on faster CPUs (Intel Xeon E5-2670 with NUMA support) in comparison to the NI2 instances of the same family. They support cluster networking for bandwidth intensive applications. cr1.8x|arge is one of the largest instance types of the CR1 family, which can offer 244 GB RAM.
Reference: http://aws.amazon.com/ec2/instance-types/

You are tasked with moving a legacy application from a virtual machine running Inside your datacenter to an Amazon VPC Unfortunately this app requires access to a number of on-premises services and no one who configured the app still works for your company. Even worse there's no documentation for it.
What will allow the application running inside the VPC to reach back and access its internal dependencies
without being reconfigured? (Choose 3 answers)

1. A. An AWS Direct Connect link between the VPC and the network housing the internal services.
2. B. An Internet Gateway to allow a VPN connection.
3. C. An Elastic IP address on the VPC instance
4. D. An IP address space that does not conflict with the one on-premises
5. E. Entries in Amazon Route 53 that allow the Instance to resolve its dependencies' IP addresses
6. F. A VM Import of the current virtual machine

Correct Answer: ADF

You are responsible for a web application that consists of an Elastic Load Balancing (ELB) load balancer in front of an Auto Scaling group of Amazon Elastic Compute Cloud (EC2) instances. For a recent deployment of a new version of the application, a new Amazon Machine Image (AMI) was created, and the Auto Scaling group was updated with a new launch configuration that refers to this new AMI. During the deployment, you received complaints from users that the website was responding with errors. All instances passed the ELB health checks.
What should you do in order to avoid errors for future deployments? (Choose 2 answer)

1. A. Add an Elastic Load Balancing health check to the Auto Scaling grou
2. B. Set a short period for the health checks to operate as soon as possible in order to prevent premature registration of the instance to theload balancer.
3. C. Enable EC2 instance C|oudWatch alerts to change the launch configuration’s AMI to the previous on
4. D. Gradually terminate instances that are using the new AMI.
5. E. Set the Elastic Load Balancing health check configuration to target a part of the application that fully tests application health and returns an error if the tests fail.
6. F. Create a new launch configuration that refers to the new AMI, and associate it with the grou
7. G. Double the size of the group, wait for the new instances to become healthy, and reduce back to the original size.If new instances do not become healthy, associate the previous launch configuration.
8. H. Increase the Elastic Load Balancing Unhealthy Threshold to a higher value to prevent an unhealthy instance from going into service behind the load balancer.

Correct Answer: CD