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
20.0.0.0/16. 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?