A user has created a VPC with CIDR 20.0.0.0/16. The user has created one subnet with CIDR
20.0.0.0/16 in this VPC. The user is trying to create another subnet with the same VPC for CIDR
20.0.0.1/24. What will happen in this scenario?

A user has launched an RDS MySQL DB with the Multi AZ feature. The user has scheduled the
scaling of
instance storage during maintenance window. What is the correct order of events during
maintenance window?
Perform maintenance on standby
Promote standby to primary
Perform maintenance on original primary
Promote original master back as primary

A sys admin is using server side encryption with AWS S3. Which of the below mentioned
statements helps the user understand the S3 encryption functionality?

A root account owner is trying to understand the S3 bucket ACL. Which of the below mentioned
options cannot be used to grant ACL on the object using the authorized predefined group?

A user has created a VPC with CIDR 20.0.0.0/16 using the wizard. The user has created a public
subnet CIDR (20.0.0.0/24. and VPN only subnets CIDR (20.0.1.0/24. along with the VPN gateway
(vgw-12345. to connect to the user’s data centre. The user’s data centre has CIDR 172.28.0.0/12.
The user has also setup a NAT instance (i-123456. to allow traffic to the internet from the VPN
subnet. Which of the below mentioned options is not a valid entry for the main route table in this
scenario?

A user has created a VPC with public and private subnets using the VPC wizard. The VPC has
CIDR

.0.0.0/16. The private subnet uses CIDR 20.0.0.0/24 . The NAT instance ID is i-a12345. Which
of the below mentioned entries are required in the main route table attached with the private
subnet to allow instances to connect with the internet?

A root account owner has given full access of his S3 bucket to one of the IAM users using the
bucket ACL. When the IAM user logs in to the S3 console, which actions can he perform?

An organization has configured Auto Scaling with ELB. There is a memory issue in the application
which is causing CPU utilization to go above 90%. The higher CPU usage triggers an event for
Auto Scaling as per the scaling policy. If the user wants to find the root cause inside the
application without triggering a scaling activity, how can he achieve this?

A sys admin is planning to subscribe to the RDS event notifications. For which of the below
mentioned source categories the subscription cannot be configured?

A user has launched an EC2 instance. The instance got terminated as soon as it was launched.
Which of the below mentioned options is not a possible reason for this?