单项选择题

Stream ciphers run on which of the following？（）

A.Fixed-length groups of digits called blocks
B.Individual blocks，one at a time，with the transformations varying during the encryption
C.Individual digits，one at a time，with the transformations varying during the encryption
D.Fixed-length groups of bits called blocks

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单项选择题

What is the objective of the aaa authentication login console-in local command？（）

A.It specifies the login authentication method list named console-in using the local user database on the router
B.It specifies the login authorization method list named console-in using the local RADIUS username-password data base
C.It specifies the login authentication list named console-in using the local username- password data base on the router
D.It specifies the login authorization method list named console-in using the local username- password data base on the router

多项选择题

Which statement best describes the Turbo ACL feature？（）

A.The Turbo ACL feature processes ACLs into lookup tables for greater efficiency
B.The Turbo ACL feature leads to increased latency， because the time it takes to match the packet isvariable
C.The Turbo ACL feature leads to reduced latency， because the time it takes to match the packet is fixedand consistent
D.Turbo ACLs increase the CPU load by matching the packet to a predetermined list

多项选择题

Which three protocols are matched by the "sdm-cls-insp-traffic" class map？（）

A.pop3
B.ftp
C.12tp
D.sql-net