A development team has set up an Azure repository for source code versioning currently. They have the git client installed on their Windows workstations. They will use this client to connect to the Azure Repo. 
Which of the following mechanism is used to authenticate into the repo?

Answer options:

A.Personal Access token
B.Role Based access
C.Group access
D.Certificates

Answer – A 
For git clients, they would normally use Personal Access tokens for authentication. The Microsoft documentation mentions the following. 

Since this is clearly given in the Microsoft documentation, all other options are incorrect. 
For more information on authenticating with personal access tokens, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/devops/organizations/accounts/use-personal-access-tokens-to-authenticate?view=azure-devops