A sysops administrator is trying to deploy a new Amazon EC2 instance using the AWS Management Console, but the instance is failing to launch. What could be causing this problem? (Choose two.)
A.
The AWS account has reached EC2 limits for the Region.
B.
The AWS account has reached EC2 limits for the Availability Zone.
C.
An EC2 key pair has not been specified.
D.
The EC2 instance is missing an instance profile with ec2:RunInstances permissions.
E.
The subnet being used has no more usable private IP addresses.
It is A&E.
Instance Profiles are used to attach Roles to EC2, and are not relevant to launching a role from the console.
It is E because every EC2 needs a private IP: if there are no usable IPs left the EC2 cannot launch.
Ans: A and E
Instance profile is not needed by the IAM user to launch EC2 instance. It is being used by the EC2 instance to perform actions on other services like send logs to CloudWatch,etc..
A. The AWS account has reached EC2 limits for the Region.
Explanation: AWS sets various limits on resources in each AWS Region, including the maximum number of EC2 instances that can be launched. If the AWS account has reached the EC2 limits for the specific Region, it won't be able to launch additional instances until the limits are increased.
E. The subnet being used has no more usable private IP addresses.
Explanation: Each subnet in a Virtual Private Cloud (VPC) has a finite number of available private IP addresses based on the CIDR block associated with the subnet. If all the private IP addresses in the subnet have been allocated to existing instances, the new EC2 instance won't be able to obtain an available IP address and, thus, will fail to launch.
A. The AWS account has reached EC2 limits for the Region.
D. The EC2 instance is missing an instance profile with ec2:RunInstances permissions.
Seem correct
A (for reasons shown above) and D, as it It does require D to launch: "If an IAM user wants to launch an EC2 instance, you need to grant the EC2 RunInstances permission to that user"
https://aws.amazon.com/blogs/security/granting-permission-to-launch-ec2-instances-with-iam-roles-passrole-permission/#:~:text=If%20an%20IAM%20user%20wants,RunInstances%20permission%20to%20that%20user.&text=If%20the%20user%20doesn't,ll%20explain%20in%20a%20moment.
Refer to EC2 lauching troubleshooting Guide, there are 4 posibilities
InsufficientInstanceCapacity = Insufficient Capacity in AZ
InstanceLimitExceeded = User instance limit hits on Region
UnauthorizedOperation = User permission restriction
Client.InternalError = EBS related issue.
Ans: A & D
Ans: A & D
Option A - Ref: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/troubleshooting-launch.html
Option D: https://docs.aws.amazon.com/IAM/latest/UserGuide/troubleshoot_iam-ec2.html
Ref:
Eliminating Options:
B: Incorrect. Ec2 Service limits is for regions not for AZ
C: Incorrect. Ec2 Keypair is a prerequisite without that we can't even click on launch instance
E. Irrelevant.
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