Which router has the su 10.5.10.0/24 [20/115] entry pointing to NullO in its routing table and why?
(Choose two.)
A.
CE5
B.
PE5
C.
PE6
D.
The router is summarizing 10.5.10.1/32 into 10.5.10.0/24
E.
The router is suppressing the 10.5.10.0/24 route
F.
The L2/L1 IS-IS router is blocking the 10.5.10.0/24 interarea route to the L1-only router
Explanation:
# show clns route
New Questions
RP/0/RP0/CPU0:router# show isis route
IS-IS isp IPv4 Unicast routes
Codes: L1 – level 1, L2 – level 2, ia – interarea (leaked into level 1)
df – level 1 default (closest attached router), su – summary null
C – connected, S – static, R – RIP, B – BGP, O – OSPF
i – IS-IS (redistributed from another instance)
The question asks “which router”.
Answer: A or B or C and D