CCNA Cheat Sheets are good for last minute preparation for candidates attending for CCNA Certification. Checkout CCNA Cheatsheets at: http://www.certexams.com/cisco/cheatsheets.html
Another resource: (seems to be good...check it out!)
http://puzzled.sourceforge.net/fdemers/documents/CCNA%20Study%20Notes.pdf
Check this out:
https://www.internetworktraining.com/cheatsheet.aspx
Its not free, but reasonably priced.
Check this out:
http://www.simulationexams.com/Blog/2018/03/21/ccna-cram-notes-cheatsheets/