Cisco Enable Secret, Enable Password and Virtual Terminal Password

Would you like to enter the initial configuration dialog?

That dialog will be appear at first time you are start up Cisco device. For advanced user and bettter initial will choose 'no'. Why 'no' ? You can setup by enter configure terminal and copy paste from example configuration, that is easiest way.

Escape character is '^]'.

% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]: no


Press RETURN to get started!

What happen if will choose 'yes' ? Several dialog will appear and some question have default settings are in square brackets '[]'. If you decide to choose 'yes', some mandatory parameter must be fill. That are enable secret, enable password and virtual terminal password. What are they ?

  The enable secret is a password used to protect access to
  privileged EXEC and configuration modes. This password, after
  entered, becomes encrypted in the configuration.
  Enter enable secret: 
% No defaulting allowed
  Enter enable secret: 
% No defaulting allowed
  Enter enable secret: 

  The enable password is used when you do not specify an
  enable secret password, with some older software versions, and
  some boot images.
  Enter enable password: 
% No defaulting allowed
  Enter enable password: 
% No defaulting allowed
  Enter enable password: 

  The virtual terminal password is used to protect
  access to the router over a network interface.
  Enter virtual terminal password: 
% No defaulting allowed
  Enter virtual terminal password: 
% No defaulting allowed
  Enter virtual terminal password: 

The last dialog is selection to saving config.

[0] Go to the IOS command prompt without saving this config.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.

Enter your selection [2]: 0
% You can enter the setup, by typing setup at IOS command prompt


Press RETURN to get started!

Have fun with Cisco IOS and have nice weekend.