AWS-Solution-Architect-Associate Amazon Exam Questions and Free Practice Test

Question 25

A large real -estate brokerage is exploring the option o( adding a cost-effective location based alert to their existing mobile application The application backend infrastructure currently runs on AWS Users who opt in to this service will receive alerts on their mobile device regarding real-estate otters in proximity to their location. For the alerts to be relevant delivery time needs to be in the low minute count the existing mobile app has 5 million users across the us Which one of the following architectural suggestions would you make to the customer?

A. The mobile application will submit its location to a web service endpoint utilizing Elastic Load Balancing and EC2 instances: DynamoDB will be used to store and retrieve relevant otters EC2 instances will communicate with mobile earners/device providers to push alerts back to mobile application.

B. Use AWS DirectConnect or VPN to establish connectMty with mobile carriers EC2 instances will receive the mobile applications ' location through carrier connection: ROS will be used to store and relevant relevant offers EC2 instances will communicate with mobile carriers to push alerts back to the mobile application

C. The mobile application will send device location using SO

D. EC2 instances will retrieve the re Ievant others from DynamoDB AWS MobiIe Push will be used to send offers to the mobile application

E. The mobile application will send device location using AWS Nlobile Push EC2 instances will retrieve the relevant offers from DynamoDB EC2 instances will communicate with mobile carriers/device providers to push alerts back to the mobile application.

Correct Answer:A

Question 26

A user is planning to host a mobile game on EC2 which sends notifications to active users on either high score or the addition of new features. The user should get this notification when he is online on his mobile device. Which of the below mentioned AWS services can help achieve this functionality?

A. AWS Simple Notification Service.

B. AWS Simple Email Service.

C. AWS Nlobile Communication Service.

D. AWS Simple Queue Service.

Correct Answer:A
Amazon Simple Notification Service (Amazon SNS) is a fast, filexible, and fully managed push messaging service. Amazon SNS makes it simple and cost-effective to push to mobile devices, such as iPhone, iPad, Android, Kindle Fire, and internet connected smart devices, as well as pushing to other distributed services.
Reference: http://aws.amazon.com/sns

Question 27

While creating an Amazon RDS DB, your first task is to set up a DB _ that controls what IP addresses or EC2 instances have access to your DB Instance.

A. Security Pool

B. Secure Zone

C. Security Token Pool

D. Security Group

Correct Answer:D

Question 28

You need to create a management network using network interfaces for a virtual private cloud (VPC) network. Which of the following statements is incorrect pertaining to Best Practices for Configuring Network Interfaces.

A. You can detach secondary (ethN) network interfaces when the instance is running or stoppe

B. However, you can't detach the primary (eth0) interface.

C. Launching an instance with multiple network interfaces automatically configures interfaces, private IP addresses, and route tables on the operating system of the instance.

D. You can attach a network interface in one subnet to an instance in another subnet in the same VPC, however, both the network interface and the instance must reside in the same Availability Zone.

E. Attaching another network interface to an instance is a valid method to increase or double the network bandwidth to or from the dual-homed instance

Correct Answer:D
Best Practices for Configuring Network Interfaces
You can attach a network interface to an instance when it's running (hot attach), when it's stopped (warm attach), or when the instance is being launched (cold attach).
You can detach secondary (ethN) network interfaces when the instance is running or stopped. However, you can't detach the primary (eth0) interface.
You can attach a network interface in one subnet to an instance in another subnet in the same VPC, however, both the network interface and the instance must reside in the same Availability Zone.
When launching an instance from the CLI or API, you can specify the network interfaces to attach to the instance for both the primary (eth0) and additional network interfaces.
Launching an instance with multiple network interfaces automatically configures interfaces, private IP addresses, and route tables on the operating system of the instance.
A warm or hot attach of an additional network interface may require you to manually bring up the second interface, configure the private IP address, and modify the route table accordingly. (Instances running Amazon Linux automatically recognize the warm or hot attach and configure themselves.)
Attaching another network interface to an instance is not a method to increase or double the network bandwidth to or from the dual-homed instance.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.htmI#use-network-and-security-applia nces-in-your-vpc

Question 29

You are designing an intrusion detection prevention (IDS/IPS) solution for a customer web application in a single VPC. You are considering the options for implementing IOS IPS protection for traffic coming from the Internet.
Which of the following options would you consider? (Choose 2 answers)

A. Implement IDS/IPS agents on each Instance running In VPC

B. Configure an instance in each subnet to switch its network interface card to promiscuous mode and analyze network traffic.

C. Implement Elastic Load Balancing with SSL listeners In front of the web applications

D. Implement a reverse proxy layer in front of web servers and configure IDS/ IPS agents on each reverse proxy server.

Correct Answer:BD

Question 30

What's an ECU?

A. Extended Cluster User.

B. None of these.

C. Elastic Computer Usage.

D. Elastic Compute Unit.

Correct Answer:D

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