Aws Readiness Quiz-1

An application server with IP Adress 170.20.30.75 is part of the subnet 172.20.30.0/24. Your database server needs to allow connections only from the above server.

What CIDR block would you specify in the database EC2 instance security group?

• 172.20.30.75

• 172.20.30.75/24

• 172.20.30.0/24

• 172.20.30.75/32

A subnet is assigned a /24 CIDR block. How many hosts can be part of this subnet ?

• 8

• 24

• 251

• 256

To establish a peering connection between two VPCs, what condition must be met ?

• CIDR blocks should overlap

• CIDR blocks should not overlap

• VPC must belong to the same account

• VPCs must be in the same region

Which products support Layer 4 load balancing?

• Classic and Application Load balancer

• Classic and network Load balancer

• Application and network load balancer

• All load balancer supports layer 4 load balancing

You have deployed an instance running a web server. When you try to connect to it using HTTP over the internet, the connection times out.

Which of these steps could fix the problem? (Select THREE)

• Check if the subnet’s route table is routing 0.0.0.0/0 to the Internet Gateway

• Check if the subnet’s route table is routing 0.0.0.0/0 to the Virtual Private Gateway

• Check that the security group allows inbound access on port 80

• Check that the security group allows outbound access on port 80

• Check that the custom network ACL allows inbound access on port 80

You have a newly developed application hosted on an Amazon EC2 instance. This application needs to access an Amazon DynamoDB table.

Which of the following is the most secure way for the application to access the DynamoDB table?

• Configure API credential into EC2 instance user data for automation

• Store API credentials in Amazon S3 for durability

• Embed API credentials to DynamoDB in the application code

• Assign IAM roles to the EC2 instance

You work for a hospital that is required to store patient's medical records for a minimum of 10 years. Most of these records will never be accessed but must be made available upon request (within a few hours). What is the most cost-effective storage option?

• AWS Import/Export

• Reduced Redundancy Storage

• Glacier

• S3 Infrequent access

You want to prioritize messages into High, Medium, and Low categories.

High priority messages need to be processed first followed by medium and then low.

How can you implement this with SQS?

• Configure SQS as Priority Quques

• Create three separate queues one for each prority

• Use FIFO queue. Use group ID to indicate priority of the message

• Use standard queue

Your application demand is stable, and you are not expecting any changes in demand soon.

There are six EC2 instances currently handling all the requests.

Given this scenario would you still use auto scaling?

• Auto scaling is used for scenarios where the demand changes are unpredictable

• Auto scaling is used for scenarios where the demand changes are time based

• Auto scaling can monitor health of your instances and replace them if they are not healthy

• Auto scaling is used for scenarios to manage large fleet of instances

Which of these storage options is not correct?

• Multiple EBS volume can be attached to an EC2 instance

• EFS file storage can be used concurrently from multiple EC2 linux instances

• S3 bucket can be used concurrently from multiple EC2 instances

• EBS volume can be used by multiple EC2 instances concurrently