The transport layer security is an association between a client and a server and specifies a set of cryptographic security parameters that can be shared among multiple connections. Connection session certificate server In transport mode, which one of the following encrypts and optionally authenticates the IP payload but not the IP header? Encapsulating security payload Authentication header Internet key exchange Cryptographic algorithm The technical deficiencies of Kerberos version 4 are: double encryption, PCBC encryption, session keys and realm subkey ticket-granting certificate C C In Kerberos 4 protocol, the ticket-granting ticket is requested once every 5 seconds once per service session once per type of service once per user logon session