200-301 Question 266
Single answerA network engineer is troubleshooting routing issues in a network. After running the 'show ip route' command on a Cisco router, they notice the following output:
C 192.168.1.0/24 is directly connected, GigabitEthernet0/0
L 192.168.1.1/32 is directly connected, GigabitEthernet0/0
O 10.0.0.0/8 [110/2] via 192.168.1.2, 00:00:07, GigabitEthernet0/0
R 172.16.0.0/16 [120/1] via 192.168.1.3, 00:00:12, GigabitEthernet0/0
What routing protocol is responsible for the route to the 10.0.0.0/8 network?
- A
EIGRP
- B
OSPF
- C
RIP
- D
Static routing
Show answer and explanation
Correct answer: B
Explanation
In Cisco routing tables, the routing protocol code indicates the source of a route. The code 'O' corresponds to OSPF (Open Shortest Path First). Since the route to 10.0.0.0/8 is marked with 'O', it is learned via the OSPF routing protocol. Understanding these codes is essential for troubleshooting and managing routing tables effectively.
- A. Incorrect.
EIGRP uses the routing protocol code 'D' in the routing table, not 'O'.
- B. Correct.
OSPF uses the routing protocol code 'O' in the routing table, which matches the route to the 10.0.0.0/8 network.
- C. Incorrect.
RIP uses the routing protocol code 'R' in the routing table, which does not match the route to the 10.0.0.0/8 network.
- D. Incorrect.
Static routes are represented with the code 'S' in the routing table, which is not present for this route.