Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 192

Your network has a mixture of Fast Ethernet and Gigabit Ethernet links. What needs to be done to ensure optimal data routing when using OSPF?

Answer options

• A. Nothing. OSPF will determine the most optimal path for routing data by default.
• B. Adjust the hello and dead timers for more rapid detection of link failures.
• C. Increase the reference-bandwidth used to calculate the interface default metrics, on all routers in your network.
• D. Set the priority values on every broadcast interface to ensure that the designated and backup designated routers are the routers with the most processor and

Correct answer:

Explanation

The correct answer is C because increasing the reference bandwidth allows OSPF to properly account for the higher speeds of Gigabit Ethernet links, leading to more accurate metric calculations. Option A is incorrect as default behavior may not be optimal in mixed environments. Option B focuses on link failure detection rather than optimal routing, and Option D does not address the issue of metric calculations for different link speeds.