Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 3

A RIP router receives the routing update information from its neighbor.
Which of the following statements regarding routing update are correct? (Choose three)

Answer options

• A. The received route that is not in the routing table will be added only when its hop count value is less than 16.
• B. The received route that already exists in the routing table will be updated only when the next hop is the router's neighbor and the cost value is smaller.
• C. The received route that already exists in the routing table will be updated only when the next hop is not the router's neighbor and the cost value is smaller.
• D. The received route that already exists in the routing table will be updated only when the next hop is the router's neighbor and the cost value has been changed.

Correct answer: A, C, D

Explanation

Option A is correct because RIP only adds routes with a hop count of less than 16, indicating they are reachable. Option C is also correct since a route can be updated based on a non-neighboring next hop if it has a lower cost. Option D is correct because it states that updates occur when the next hop is a neighbor and the cost changes, which aligns with RIP's update rules. Option B is incorrect as it does not consider the scenario where the next hop is not a neighbor.