AWS Certified Solutions Architect – Professional SAP-C01 – Question307

While assigning a tag to an instance, which of the below mentioned options is not a valid tag key/value pair?

A. Key : "aws" Value:"aws"
B. Key: "aws:name" Value: "instanceAnswer: Aws"
C. Key: "Name :aws" Value: "instanceAnswer: Aws"
D. Key : "nameAnswer: Aws" Value:"aws:instance"

Correct Answer: B

Explanation:

Explanation: In Amazon Web Services, to help manage EC2 instances as well their usage in a better way, the user can tag the instances. The tags are metadata assigned by the user which consists of a key and value. The tag key cannot have a prefix as “aws:”, although it can have only “aws”.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_Tags.html