AWS Architect Class 8

You are an AWS

Solutions Architect. Your company has a successful web application deployed

in an AWS Auto Scaling group. The application attracts more and more global

customers. However, the application’s performance is impacted. Your manager

asks you how to improve the performance and availability of the application.

Which of the following AWS services would you recommend?

• AWS

  DataSync

• Amazon

  DynamoDB Accelerator

• AWS

  Lake Formation

• AWS

  Global Accelerator

Your team is

developing a high-performance computing (HPC) application. The application

resolves complex, compute-intensive problems and needs a high-performance and

low-latency Lustre file system. You need to configure this file system in AWS

at a low cost. Which method is the most suitable?

• Create

  a Lustre file system through Amazon FSx

• Launch

  a high-performance Lustre file system in Amazon EBS

• Create

  a high-speed volume cluster in an EC2 placement group

• Launch

  the Lustre file system from AWS Marketplace

Your company has an

online game application deployed in an Auto Scaling group. The traffic of the

application is predictable. Every Friday, the traffic starts to increase,

remains high on weekends and then drops on Monday. You need to plan the

scaling actions for the Auto Scaling group. Which method is the most suitable

for the scaling policy?

• Configure a scheduled

  CloudWatch event rule to launch/terminate instances at the specified time

  every week.

• Create a predefined

  target tracking scaling policy based on the average CPU metric and the ASG

  will scale automatically.

• Select the ASG and on

  the Automatic Scaling tab, add a step scaling policy to automatically

  scale-out/in at fixed time every week.

• Configure a scheduled

  action in the Auto Scaling group by specifying the recurrence, start/end

  time, capacities, etc.

You are creating

several EC2 instances for a new application. For better performance of the

application, both low network latency and high network throughput are

required for the EC2 instances. All instances should be launched in a single

availability zone. How would you configure this?

• Launch

  all EC2 instances in a placement group using a Cluster placement strategy.

• Auto-assign

  a public IP when launching the EC2 instances.

• Launch EC2 instances

  in an EC2 placement group and select the Spread placement strategy.

• When launching the EC2

  instances, select an instance type that supports enhanced networking.

You need to deploy a

machine learning application in AWS EC2. The performance of inter-instance

communication is very critical for the application and you want to attach a

network device to the instance so that the performance can be greatly

improved. Which option is the most appropriate to improve the

performance?

• Enable

  enhanced networking features in the EC2 instance.

• Configure

  Elastic Fabric Adapter (EFA) in the instance.

• Attach

  high-speed Elastic Network Interface (ENI) in the instance.

• Create an Elastic File

  System (EFS) and mount the file system in the instance.

You are planning to

build a fleet of EBS-optimized EC2 instances for your new application. Due to

security compliance, your organization wants you to encrypt root volume which

is used to boot the instances. How can this be achieved?

• Select the Encryption

  option for the root EBS volume while launching the EC2 instance.

• Once

  the EC2 instances are launched, encrypt the root volume using AWS KMS Master

  Key.

• Root

  volumes cannot be encrypted. Add another EBS volume with an encryption option

  selected during launch. Once EC2 instances are launched, make encrypted EBS

  volume as root volume through the console.

• Launch

  an unencrypted EC2 instance and create a snapshot of the root volume. Make a

  copy of the snapshot with the encryption option selected and CreateImage

  using the encrypted snapshot. Use this image to launch EC2 instances.

Which of

the following are not backup and restore solutions provided by AWS?

• AWS

  Elastic Block Store

• AWS

  Storage Gateway

• AWS

  Elastic Beanstalk

• AWS

  Database Migration Hub

You had set up an

internal HTTP(S) Elastic Load Balancer to route requests to two EC2 instances

inside a private VPC. However, one of the target EC2 instance is showing

Unhealthy status. Which of the following options could not be a reason for

this?

• Port 80/443 is not

  allowed on EC2 instance’s Security Group from the load balancer.

• An EC2

  instance is in different availability zones than load balancer.

• The

  ping path does not exist on the load balancer

• The

  target did not return a successful response code