Click the Exhibit button.The IS-IS adjacency between routers R1 and R2 will not establish.
Referring to exhibit, what is the problem?
A.
The ISO address is not configured on interface ge-0/0/1.
B.
The level is not configured under protocols isis.
C.
The IP address is not configured on interface lo0.
D.
The link MTU is too small on interface ge-0/0/1.
Right answer will be D
D is the right answer
Agree, D should be right answer, see: https://www.netflask.net/isis-minimum-mtu/
D is the right answer JNCIS-ENT Routing Study Guide page 168
answer D is correct just passed my exam with 92 score IS-IS 100%