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
since we are protecting co-workers from connecting to the switches from their desktop PCs, we would need a Telnet line which is used to connect to devices remotely from other network devices on the same network segment as the device we want to connect to. A login local vty subcommand configures a local username for login access but since our design constraint is to configure without usernames, option A is the correct answer.
Potential energy is energy that is built up and saved. When you are moving and letting out that energy, that is kinetic energy. You would be using the least kinetic energy when you aren't moving, which is at the top of the hill because you move faster the more you go down.
