单项选择题
A.password encryption service
B.changes to the config-register setting
C.the xmodem privilege EXEC mode command to recover the Cisco IOS image
D.ROMMON
单项选择题 AstandardaccesscontrollisthasbeenconfiguredonarouterandappliedtointerfaceSerial0inanoutbounddirection.NoACLisappliedtoInterfaceSerial1onthesamerouter.WhatwillhappenwhentrafficbeingfilteredbytheaccesslistdoesnotmatchtheconfiguredACLstatementsforSerial0？（）
单项选择题 Regardingconstructingagoodencryptionalgorithm，whatdoescreatinganavalancheeffectindicate？（）
单项选择题 WhichitemiscorrectregardingCiscoIOSIPSonCiscoIOSRelease12.4（11）Tandlater？（）