by 
Que 1: A client has requested a design for a fault tolerant database that can failover between AZs. You have decided to use RDS in a multi-AZ configuration. What type of replication will the primary database use to replicate to the standby instance?
Correct Answer: Synchronous replication
Que 2: An organization is migrating data to the AWS cloud. An on-premises application uses Network File System shares and must access the data without code changes. The data is critical and is accessed frequently.Which storage solution should a Solutions Architect recommend to maximize availability and durability?
Correct Answer: Amazon Elastic File System
Que 3: An Amazon EC2 instance is generating very high packets-per-second and performance of the application stack is being impacted. A Solutions Architect needs to determine a resolution to the issue that results in improved performance.Which action should the Architect take?
Correct Answer: Use enhanced networking
Que 4: An application makes calls to a REST API running on Amazon EC2 instances behind an Application Load Balancer (ALB). Most API calls complete quickly. However, a single endpoint is making API calls that require much longer to complete and this is introducing overall latency into the system. What steps can a Solutions Architect take to minimize the effects of the long-running API calls?
Correct Answer: Increase the ALB idle timeout to allow the long-running requests to complete
Que 5: An Amazon EC2 instance behind an Elastic Load Balancer (ELB) is in the process of being de-registered. Which ELB feature is used to allow existing connections to close cleanly?
Correct Answer: Connection Draining
Que 6: A Solutions Architect needs to capture information about the traffic that reaches an Amazon Elastic Load Balancer. The information should include the source, destination, and protocol.What is the most secure and reliable method for gathering this data?
Correct Answer: Create a VPC flow log for the subnets in which the ELB is running
Que 7: An application is running on EC2 instances in a private subnet of an Amazon VPC. A Solutions Architect would like to connect the application to Amazon API Gateway. For security reasons, it is necessary to ensure that no traffic traverses the Internet and to ensure all traffic uses private IP addresses only.How can this be achieved?
Correct Answer: Create a NAT gateway
Que 8: An organization is creating a new storage solution and needs to ensure that Amazon S3 objects that are deleted are immediately restorable for up to 30 days. After 30 days the objects should be retained for a further 180 days and be restorable within 24 hours.The solution should be operationally simple and cost-effective. How can these requirements be achieved?
Correct Answer: Create a lifecycle rule to transition non-current versions to GLACIER after 30 days, and then expire the objects after 180 days
Que 9: A company needs to capture detailed information about all HTTP requests that are processed by their Internet facing Application Load Balancer (ALB). The company requires information on the requester, IP address, and request type for analyzing traffic patterns to better understand their customer base.Which actions should a Solutions Architect recommend?
Correct Answer: Use CloudTrail to capture all API calls made to the ALB
Que 10: A High Performance Computing (HPC) application will be migrated to AWS. The application requires low network latency and high throughput between nodes and will be deployed in a single AZ.How should the application be deployed for best inter-node performance?
Correct Answer: Behind a Network Load Balancer (NLB)
Que 11: A company runs an application on-premises that must consume a REST API running on Amazon API Gateway. The company has an AWS Direct Connect connection to their Amazon VPC. The solutions architect wants all API calls to use private addressing only and avoid the internet. How can this be achieved?
Correct Answer: Use a public virtual interface and an AWS VPN to create a secure tunnel to Amazon API Gateway
Que 12: web application is deployed in multiple regions behind an ELB Application Load Balancer. You need deterministic routing to the closest region and automatic failover. Traffic should traverse the AWS global network for consistent performance.How can this be achieved?
Correct Answer: Create a Route 53 Alias record for each ALB and configure a latency-based routing policy
Que 13: The AWS Acceptable Use Policy describes permitted and prohibited behavior on AWS and includes descriptions of prohibited security violations and network abuse. According to the policy, what is AWS’s position on penetration testing?
Correct Answer: AWS allow penetration for some resources without prior authorization
Que 14: A company runs an application on premises that stores a large quantity of semi-structured data using key-value pairs. The application code will be migrated to AWS Lambda and a highly scalable solution is required for storing the data.Which datastore will be the best fit for these requirements?
Correct Answer: Amazon EFS
