单选题What is the purpose of a zone in JUNOS Software？（）A A zone defines a group of security devices with a common management.B A zone defines the geographic region in which the security device is deployed.C A zone defines a group of network segments with si

A zone defines a group of security devices with a common management.

A zone defines the geographic region in which the security device is deployed.

A zone defines a group of network segments with similar security requirements.

A zone defines a group of network segments with similar class-of-service requirements.