Which key method is used to detect and prevent attacks by use of IDS and/or IPS technologies？（）

单项选择题Whichoneoftheaaaaccountingcommandscanbeusedtoenableloggingofboththestartandstoprecordsforuserterminalsessionsontherouter？（）

A.aaa accounting connection start-stop tacacs+
B.aaa accounting exec start-stop tacacs+
C.aaa accounting system start-stop tacacs+
D.aaa accounting network start-stop tacacs+

单项选择题Which statement is correct regarding the aaa configurations based on the exhibit provided？（）

A.The authentication method list used by the vty port is named test.
B.If the TACACS+ AAA server is not available， no users will be able to establish a Telnet session with the router.
C.If the TACACS+ AAA server is not available， console access to the router can be authenticated using the local database.
D.The authentication method list used by the console port is named test.

单项选择题Whenconfiguringrole-basedCLIonaCiscorouter，whichactionwillbetakenfirst？（）

A.Create a parser view called "root view."
B.Log in to the router as the root user.
C.Enable the root view on the router.
D.Enable role-based CLI globally on the router using the privileged EXEC mode Cisco IOS command.

多项选择题WhichtwoprimaryportauthenticationprotocolsareusedwithVSANs？（）

A.SPAP
B.CHAP
C.DHCHAP
D.ESP

多项选择题Whichthreearedistinctionsbetweenasymmetricandsymmetricalgorithms？（）

A.Only symmetric algorithms have a key exchange technology built in
B.Asymmetric algorithms are used quite often as key exchange protocols for symmetricalgorithms
C.Only asymmetric algorithms have a key exchange technology built in
D.Asymmetric algorithms are based on more complex mathematical computations