IPsec,alsoknownastheinternetProtocol(),definesthearchitectureforsecurityservicesforIPnetworktrafficIPsecdescribestheframeworkforprovidingsecurityatheIPlayer,aswellasthesuiteofprotocolsdesignedtoprovidethatsecurity:through_(请作答此空)_andencryptionofIPnetworkpackets.IPeccanbeused10protectnetworkdata,forexample,bysettingupcircuitsusingIPsec(),inwhichalldatabeingsentbetweentwoendpointsisencrypted,aswithaVirtual()Networkconnection;forencryptingapplicationlayerdata;andforprovidingsecurityforrouterssendingroutingdataacrossthepublicinternet.InternettrafficcanalsobesecuredfromhosttohostwithouttheuseofIPsec,forexamplebyencryptionatthe()layerwithHTTPSecure(TTPS)oranthetransportlayerwittheTransportLayerSecurity(TLS)protocol.
A.encoding
B.authentication
C.decryption
D.packaging
正确答案是C