AWS Certified Solutions Architect - Professional

AWS Certified Solutions Architect - Professional practice questions, page 41 of 41, with answer review and explanations.

Question 201

True or False: "In the context of Amazon ElastiCache, from the application's point of view, connecting to the cluster configuration endpoint is no different than connecting directly to an individual cache node."

  1. True, from the application's point of view, connecting to the cluster configuration endpoint is no different than connecting directly to an individual cache node since, each has a unique node identifier.
  2. True, from the application's point of view, connecting to the cluster configuration endpoint is no different than connecting directly to an individual cache node.
  3. False, you can connect to a cache node, but not to a cluster configuration endpoint.
  4. False, you can connect to a cluster configuration endpoint, but not to a cache node.

Question 202

An organization is setting up a highly scalable application using Elastic Beanstalk. They are using Elastic Load Balancing (ELB) as well as a Virtual Private Cloud (VPC) with public and private subnets. They have the following requirements: - All the EC2 instances should have a private IP - All the EC2 instances should receive data via the ELB's. Which of these will not be needed in this setup?

  1. Launch the EC2 instances with only the public subnet.
  2. Create routing rules which will route all inbound traffic from ELB to the EC2 instances.
  3. Configure ELB and NAT as a part of the public subnet only.
  4. Create routing rules which will route all outbound traffic from the EC2 instances through NAT.

Question 203

An EC2 instance that performs source/destination checks by default is launched in a private VPC subnet. All security, NACL, and routing definitions are configured as expected. A custom NAT instance is launched. Which of the following must be done for the custom NAT instance to work?

  1. The source/destination checks should be disabled on the NAT instance.
  2. The NAT instance should be launched in public subnet.
  3. The NAT instance should be configured with a public IP address.
  4. The NAT instance should be configured with an elastic IP address.