Refer to the exhibit. R1 and R2 are connected via serial interfaces. Both interfaces show that there is Layer 2 connectivity between them. The administrator verifies that CDP is operational; however, pings between the two interfaces are unsuccessful. What is the cause of this connectivity problem?

IT Questions Bank › Category: CCNA Discovery v4 › Refer to the exhibit. R1 and R2 are connected via serial interfaces. Both interfaces show that there is Layer 2 connectivity between them. The administrator verifies that CDP is operational; however, pings between the two interfaces are unsuccessful. What is the cause of this connectivity problem?

no set loopback
incorrect subnet mask on R2
incompatible bandwidth
incorrect IP address on R1
incompatible encapsulation

Exam with this question: CCNA Discovery 3: DRSEnt Final Exam