Cisco CCNA Static and Dynamic Routing 4

Question 1

A Cisco router has the following entry: 'O IA 172.16.5.0/24 [110/30] via 10.1.1.1'. What does 'IA' indicate?

Accepted Answer

The route is an inter-area OSPF route learned from an ABR

Answer

The 'IA' tag in the routing table identifies OSPF inter-area routes that were generated by an Area Border Router from a different OSPF area.

Question 2

Which feature prevents RIP routing loops by immediately marking a route as unreachable when its interface goes down, before the update timer expires?

Accepted Answer

Route poisoning

Answer

Route poisoning immediately advertises a failed route with a metric of 16 (infinity) to notify neighbors quickly rather than waiting for a timeout.

Question 3

What is the administrative distance of a directly connected network on a Cisco router?

Accepted Answer

0

Answer

Directly connected routes have an administrative distance of 0, making them the most trusted routes in the routing table.

Question 4

An EIGRP router's topology table shows a destination with a Feasible Distance of 28160 and a Reported Distance of 25600. The router has one successor. What correctly describes this entry?

Accepted Answer

The route is in passive state and the FD is the metric to reach the destination via the successor

Answer

In passive state, the FD represents the best metric to the destination via the successor, and a lower RD than FD is normal and expected.

Question 5

Which command configures OSPF to advertise a default route to all OSPF neighbors, even if no default route exists in the local routing table?

Accepted Answer

default-information originate always

Answer

The 'default-information originate always' command forces an OSPF router to advertise a Type 5 external default route regardless of whether one exists locally.

Cisco CCNA Practice Test

Cisco CCNA Practice Test

Cisco CCNA Static and Dynamic Routing 4