Cisco
350-001 · Question #107
350-001 Question #107: Real Exam Question with Answer & Explanation
The correct answer is A: The packet will loop between R1 and R2.. Indeed, when you change the administrative distance of the discard route to 255, this prevents the route to be installed in the routing table but this does not prevent the route to be advertised to
Question
Refer to the exhibit. In this network, R1 has been configured to advertise a summary route, 192.168.0.0/22, to R2. R2 has been configured to advertise a summary route, 192.168.0.0/21, to R1. Both routers have been configured to remove the discard route (the route to null created when a summary route is configured) by setting the administrative distance of the discard route to 255. What will happen if R1 receives a packet destined to 192.168.3.1?
Exhibit
Options
- AThe packet will loop between R1 and R2.
- BIt is not possible to set the administrative distance on a summary to 255.
- CThe packet will be forwarded to R2, where it will be routed to null0.
- DThe packet will be dropped by R1, since there is no route to 192.168.3.1.
Explanation
Indeed, when you change the administrative distance of the discard route to 255, this prevents the route to be installed in the routing table but this does not prevent the route to be advertised to
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