Which two functions does the core layer provide in a three-tier architecture? (Choose two.)
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Correct answer: Provide uninterrupted forwarding service, Ensure timely data transfer between layers.
Why this is the answer
The core layer in a three-tier architecture is designed for high-speed, fault-tolerant backbone connectivity. Its primary functions are to provide uninterrupted forwarding service, meaning it handles large amounts of traffic quickly and reliably without processing it, and to ensure timely data transfer between layers by acting as a high-speed switch for all traffic. It focuses on speed and redundancy. Inspecting packets for malicious activity is a function of the distribution layer or dedicated security devices. Providing direct connectivity for end-user devices is a function of the access layer. Policing traffic is also typically handled at the distribution or access layers, closer to the network edge.
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