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At which layer of the network is route summarization recommended?
Correct Answer: C
Explanation/Reference: Explanation: Distribution Policy-based connectivity Redundancy and load balancing Aggregation of LAN wiring closets Aggregation of WAN connections QoS Security filtering Address or area aggregation or summarization Departmental or workgroup access Broadcast or multicast domain definition Routing between VIANs Media translations (for example, between Ethernet and Token Ring) Redistribution between routing domains (for example, between two different routing protocols) Demarcation between static and dynamic routing protocols