Followings are the six types of execution policy in PowerShell :
AllSigned : It is an execution policy which executes only those scripts that are signed by a trusted publisher with a digital signature.
RemoteSigned : PowerShell will execute any script which is written on a local computer. But the script which is downloaded from the internet must require the digital signature from the trusted publisher.
Restricted : This type of execution policy does not allow to execute any script but permits the individual commands. This policy is available for the Windows client computer by default.
Undefined : No execution policy is set or defined in the current scope.
Bypass : It is mainly designed for those configurations in which a PowerShell script is built into a larger application. In this type of policy, no warnings and no prompts are provided.
Unrestricted : This policy is the default for Non-Window computers. This policy executes those scripts which are unsigned.
