SysOPS Evaluation 3

A news-based pay television channel has a requirement of load balancing the incoming TCP traffic to their website. To maintain performance, it should handle millions of requests per second while maintaining ultra-low latencies.

Which of the following should you add in their current cloud architecture?

• Auto Scaling Group

• Application Load Balancer

• 
  Amazon Route 53

• Network Load Balancer

A startup launched an online transaction processing application that uses a fleet of EC2 instances deployed across multiple Availability Zones with an Application Load Balancer to evenly distribute the incoming traffic. The SysOps Administrator provisioned an RDS instance in a private subnet for the application’s database-tier, with a NAT gateway for routing traffic from the database server to the Internet.

Which of the following options can the Administrator implement to increase the scalability and availability of the application? (Select TWO.)

• Replace the Application Load Balancer with Route 53

• Use Auto Scaling

• Configure the RDS instance to use Multi-AZ deployments

• Switch from a NAT gateway to NAT instance for higher bandwidth and availability

A company currently has an application which is hosted in an On-Demand EC2 instance in one Availability Zone. You are instructed to redesign the architecture to make it scalable and highly available. Which of the following should you do to accomplish this task?

• Launch an Auto Scaling Group with subnets across 2 Availability Zones. Set the minimum and maximum capacity to 1.

• 
  Launch an Auto Scaling Group with subnets across 3 Availability Zones. Set the desired and maximum capacity to 5.

• Launch an Auto Scaling Group with subnets across 2 AWS regions. Set a minimum, desired, and maximum capacity to 1.

• Launch an Auto Scaling Group with subnets across 3 AWS regions. Set the minimum, desired, and maximum capacity to 2

A SysOps Administrator is managing an online banking portal that uses an Auto Scaling group of On-Demand EC2 instances and an RDS database in AWS. The Administrator needs to ensure that the users can have 24/7 access to their accounts by designing a highly available cloud architecture for the portal.

Which of the following is the best option that the Administrator should implement for this scenario?

• Set up Read Replicas

• 
  Enable Multi-AZ for the database

• 
  Connect RDS to a CloudFront web distribution

• Use AWS RDS Automated Backups

A live chat application is hosted in AWS which can be embedded as a widget in any website. It uses WebSockets to provide full-duplex communication between the users. The application is hosted on an Auto Scaling group of On-Demand EC2 instances across multiple Availability Zones with an Application Load Balancer in front to balance the incoming traffic. As part of the security audit of the company, there is a requirement that the client’s IP address, latencies, request paths, and server responses are properly logged.

How can you meet the given requirement in this scenario? (Select TWO.)

• Enable CloudWatch logs for individual On-Demand EC2 Instances.

• Enable access logging for the Application Load Balancer.

• Set up a standard S3 bucket where the load balancer will store the logs.

• Enable Proxy Protocol in the load balancer.

A company has a newly-hired DevOps Engineer that will assist the IT Manager in developing a fault-tolerant and highly available architecture, which is comprised of an Elastic Load Balancer and an Auto Scaling group of EC2 instances deployed on multiple AZ’s. This will be used by a forex trading application that requires WebSockets, host-based and path-based routing, and support for containerized applications.

Which of the following is the most suitable type of Elastic Load Balancer that the DevOps Engineer should recommend to the IT Manager?

• Network Load Balancer

• Gateway Load Balancer

• Application Load Balancer

• Either a Gateway Load Balancer or a Network Load Balancer