The correct password setting to control the Privilege Exec mode on an Arista switch is the 'enable secret'. This command is used to set the password that restricts access to privileged EXEC mode, often referred to as enable mode, on network devices. The term 'boot password' generally refers to a password that protects the boot process, while 'management secret' is not a standard term used in this context. The option 'enable' is incomplete; the correct command is 'enable secret'.