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» Cisco » Examen Cisco CCNA V3.1 » Module 4 » Final » Question 36/39

36.A system administrator needs to configure the regional office with ISDN for DDR connections to three remote sites. Each remote site requires different IP subnets, different encapsulations, and different authentication methods. The sites will not be connected at the same time. The company would like to accomplish this in the most cost effective manner. What method can the system administrator use to accomplish this task using the fewest B channels?

Install and configure a PRI.
Install and configure a BRI interface with separate SPIDs for each remote site.
Install and configure a BRI with multiple switch types in global configuration.
Install and configure a BRI using dialer profiles.
Install and configure a separate BRI for each remote site.