Question 1 of 30
In a service provider network utilizing IS-IS for routing, a network engineer is tasked with implementing authentication to enhance the security of the routing protocol. The engineer decides to use a simple password for IS-IS authentication. Given that the network consists of multiple routers, each with its own configuration, what is the most effective method to ensure that all routers share the same authentication key while minimizing the risk of exposure to unauthorized access?
Configure the same authentication key on all routers using the IS-IS authentication command in the router configuration mode.
Use different authentication keys for each router to enhance security and prevent a single point of failure.
Implement a centralized authentication server that distributes keys to all routers dynamically.
Rely on the default IS-IS authentication settings, as they are sufficient for most scenarios.

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