Which command is used to enable CHAP authentication, with PAP as the fallback method, on a serial interface?
CHAP authentication
A. Router(config-if)# ppp authentication chap fallback ppp
B. Router(config-if)# ppp authentication chap pap
C. Router(config-if)# authentication ppp chap fallback ppp
D. Router(config-if)# authentication ppp chap pap
CISCO CCNA Exam – Q241
Refer to the exhibit.
The Bigtime router is unable to authenticate to the Littletime router. What is the cause of the problem?
A. The usernames are incorrectly configured on the two routers.
B. The passwords do not match on the two routers.
C. CHAP authentication cannot be used on a serial interface.
D. The routers cannot be connected from interface S0/0 to interface S0/0.
E. With CHAP authentication, one router must authenticate to another router. The routers cannot be configured to authenticate to each other.
CISCO CCNA Exam – Q215
Drag the security features on the left to the specific security risks they help protect against on the right. (Not all options are used.)
Select and Place:
