Refer to the exhibit.
An engineer booted a new switch and applied this configuration via the console port.
Which additional configuration must be applied to allow administrators to authenticate directly to enable privilege mode via Telnet using a local username andpassword?
A.R1(config)#username admin正确答案D
R1(config-if)#line vty 0 4
R1(config-line)#password p@ss1234 B.R1(config)#username admin
R1(config-if)#line vty 0 4
R1(config-line)#password p@ss1234
R1(config-line)#transport inputtelnet C.R1(config)#username admin secret p@ss1234
R1(config-if)#line vty 0 4
R1(config-line)#login local
R1(config)#enable secret p@ss1234 D.R1(config)#username admin privilege 15 secretp@ss1234
R1(config-if)#line vty 0 4
R1(config-line)#login local
