Refer to the exhibit. A network administrator is troubleshooting the serial connection between R1 and R2. There is no communication between R1 and R2. Based on the output of the show ip interface brief command, what is the cause of the problem?
- There is a misconfiguration of IP addresses.
- There is a mismatch of encapsulation methods.
- The no shutdown command has not been issued on R2.
- The routing protocols are not compatible.
Exam with this question: CCNA Discovery 2: DsmbISP Final Exam