Here's the book you need to prepare the latest Building Cisco Remote Access Networks (BCRAN) exam, 642-821. This Study Guide provides: * In-depth coverage of key exam topics * Practical information on planning, configuring, and troubleshooting Cisco remote access networks * Hundreds of challenging review questions * Leading-edge exam preparation software, including a test engine, sample simulation questions, and electronic flashcards Authoritative coverage of all exam objectives, including: * Providing remote access to a network with asynchronous dial-in, Frame Relay, ISDN, cable modem, and DSL * Managing traffic flow on WAN links * Using PPP as an access and encapsulation method * Configuring access control to manage and limit remote access * Configuring VPN operation using Cisco IOS * Configuring Network Address Translation (NAT) * Planning a Cisco ISDN solution for remote access or primary link back-up * Design a Cisco frame relay infrastructure * Troubleshooting non-functional remote access systems * Troubleshooting traffic control problems on a WAN link.