What is the outcome of entering these commands?

R1(config)# line vty 0 4 
R1(config-line)# password check123
R1(config-line)# login


ensures that a password is entered before entering user EXEC mode
sets the password to be used for connecting to this router via Telnet
requires check123 to be entered before the configuration can be saved
creates a local user account for logging in to a router or switch