CCNP ISCW Official Exam Certification Guide is a best of breed Cisco� exam study guide that focuses specifically on the objectives for the Implementing Secure Converged Wide Area Networks exam (642-825 ISCW). Successfully passing the ISCW 642-825 exam certifies that you have the knowledge and skills necessary to secure and expand the reach of an enterprise network to teleworkers and remote sites with focus on securing remote access and VPN client configuration..