Yes, you can take and pass any Associate level exam, including one from the CCNA Service Provider track, to recertify your CCNA R&S certification. Please note that you will need to pass the recertification exam on or before the CCNA R&S certification expiration date. You can also find additional recertification information and options in the Routing & Switching (CCNA) certification page. Good luck to you!
Cisco Learning Network Moderator