65、Network security is the protection of the underlying networkinginfrastructur (1) access, misuse, or theft. It involves creating a secureinfrastructure for device and applications to work in a (2) manner.Network security combines multiple defenses at the edge and in thenetwork. Each network security layer implements (4) controls.Authorized users gain access to network resources. A (3) is a networdevice that monitors incoming and outgoing network traffic and decideswhetherblock specific trffic based on a defined set of security rules. Avirtual (5) encrypts the connection from an endpoint to a network,often over the internet.remote-aceess VPN uses IPsee or Seeure Soekets Layer to aufhenticate thebetween device and network.注意，请在下面选择相应的选项，选项全部为大写字母。(1)A.unauthorizedB.authorizedC.normalD.frequent(2)A.economicalB.secureC.fairD.efficient(3)A.computingB.tanstationC.policiesD.simulations(4)A.firewallB.routerC.gatewayD.switch(5)A.publicB.privateC.personalD.political