A user is trying to connect to a running EC2 instance using SSH. However, the user gets a
connection time out error. Which of the below mentioned options is not a possible reason for
rejection?
A.
The access key to connect to the instance is wrong
B.
The security group is not configured properly
C.
The private key used to launch the instance is not correct
D.
The instance CPU is heavily loaded
Explanation:
If the user is trying to connect to a Linux EC2 instance and receives the connection time out error
the probable reasons are:
Security group is not configured with the SSH port
The private key pair is not right
The user name to login is wrong
The instance CPU is heavily loaded, so it does not allow more connections
A
A
Connection timed out is caused by security group rules, ACL or incorrect route table.
So the answer is B.
Access key issue would cause error: User key not recognized by server
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/TroubleshootingInstancesConnecting.html#TroubleshootingInstancesConnectionTimeout
AC