Whizlabs is using service connections for its DevOps organization. 
Please select three main security categories for service connections that WhizLabs can use.

Answer options:

A.User permissions
B.Reader permissions
C.Pipeline permissions
D.Project permissions
E.Creator permissions

Correct Answers: A, C, and D 
Option A is correct.User permissions category controls who can create, use, and manage service connections. Use permissions have two levels: project and organization. 
Option C is correct.Pipeline permissions category controls which YAML pipelines can use service connections. 
Option D is correct.Project permissions category controls who can share service connections between projects on the organizational level. 
Option B is incorrect since Reader permissions are role permissions that depend on the service connection category, like a user in the Reader`s role under the User permission category can view service connection. 
Option E is incorrect since Creator permissions are role permissions that depend on the service connection category, like a user in the Creator`s role under the User permission category can create a service connection. 
For more information about service connections, please visit the below URL: 

https://docs.microsoft.com/en-us/azure/devops/pipelines/library/service-endpoints?view=azure-devops&tabs=yaml