OK, you will not need to know PuTTY for the RHCSA exam. But the reality it you will need to use and configure PuTTY in the world outside of the exam. We download PuTTY and instally the MSI on Windows. The MSI comes with PuTTYgen to create public/private key pairs. With the Private key crreated we can copy the public key from the puttygen app into the .ssh/authorized_keys file on the Linux server and client that you want to log in as. Make sure both the .ssh directory and the authorized_keys file are private to the user. We can then use the PuTTY client to point to our private key and we can authenticate without the need of the password.
Additionally you can find my video courses on Pluralsight: http://pluralsight.com/training/Authors/Details/andrew-mallett and take time to see my own site http://www.theurbanpenguin.com
