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What does the passive command provide to dynamic routing protocols?
Correct Answer: B
In dynamic routing (e.g., RIP, OSPF, EIGRP), the passive-interface command stops routingadvertisements (outgoing updates) from being sent through the specified interface. However, the router still listens for incoming routing updates. Cisco IOS Configuration Guide - Passive Interface: "The passive-interface command prevents routing updates from being sent on an interface, while still allowing updates to be received." Rene Meneses MTCNA Guide - Passive Mode: "It suppresses sending routing advertisements but does not block receiving updates on that interface." Other options: * A: Incorrect - it does not block receiving * C: Incorrect - it applies to interfaces, not globally * D: Also incorrect - it does not block all updates Final answer: B ############################################################