Pete, a security administrator, is informed that people from the HR department should not have access to the accounting department's server, and the accounting department should not have access to…

Pete, a security administrator, is informed that people from the HR department should not have access to the accounting department's server, and the accounting department should not have access to the HR department's server. The network is separated by switches. Which of the following is designed to keep the HR department users from accessing the accounting department's server and vice-versa?