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» Cisco » Examen Cisco CCNA V3.1 » Module 4 » Final » Question 14/39

14.A system administrator is unable to ping the Serial0/0 interface of RouterB from RouterA. During the troubleshooting process, the following facts are established:
- IP addressing and subnet masks are correct.
- RouterA is a Cisco router and RouterB is a router from another vendor.
- RouterA is configured with the default encapsulation.
- The serial interfaces on both routers are up.
- The protocol is down on the serial interfaces of both routers.

What should the administrator do to solve the problem?

Add a clock rate on RouterA.
Enable the serial interface on RouterB.
Change the encapsulation on both routers to PPP.
Connect the serial cable to the correct interface on RouterB.
Use the correct serial cable to attach the CSU/DSU to RouterB.