* Routing Table and Equal-Cost Routes:When multiple routes to the same destination network have the same cost (e.g., metric or administrative distance), they are referred to as "equal-cost routes." Routers use load balancing to distribute traffic across these routes.
* Analysis of Options:
* Option A: "Sub-optimal routes" are routes that are not preferred due to higher cost or less desirable metrics.
* Option B: "Multipath routes" is a general term but does not specify equal cost, making it less precise.
* Option C: "Equal-cost routes" is correct as the scenario specifies the same destination network with the same cost.
* Option D: "Default routes" are used when no specific route matches the destination, which is unrelated to the given scenario.
* Correct answer:The routes are C (Equal-cost routes).