For the CCNA 200-301 exam, a great feature to look for in a lab exercises PDF (updated for the latest exam topics) is:
Modern tooling and emulation
Cisco Modeling Labs (CML): The official, paid simulation tool from Cisco. How to Use Your CCNA 200-301 Lab Exercises PDF ccna 200301 lab exercises pdf updated
Security Services: Configuration of Standard and Extended ACLs, and securing SSHv2/console connections. For the CCNA 200-301 exam, a great feature