What configure mode you used for the command ip ospf authentication-key c1$c0?
A. global
B. priviliged
C. in-line
D. interface
Answer:D
What configure mode you used for the command ip ospf authentication-key c1$c0?
A. global B. priviliged C. in-line D. interface
Explanation: ip ospf authentication-key is used under interface configuration mode, so it's in interface level,