An engineer wants to set up simple password protection with no usernames for some switches in a lab, for the purpose of keeping curious co-workers from logging into the lab switches from their desktop PCs. Which of the following commands would be a useful part of that configuration?
A. A login vty mode subcommand
B. A password password console subcommand
C. A login local vty subcommand
D. A transport input ssh vty subcommand