At the distribution layer of a hierarchical network, what are two advantages of using Layer 3 devices instead of Layer 2 switches? (Choose two.)

January 22, 2021 Last Updated: January 22, 2021 No Comments
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IT Questions Bank › Category: CCNP › At the distribution layer of a hierarchical network, what are two advantages of using Layer 3 devices instead of Layer 2 switches? (Choose two.)
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At the distribution layer of a hierarchical network, what are two advantages of using Layer 3 devices instead of Layer 2 switches? (Choose two.) 1ITExamAnswers Staff asked 1 month ago
At the distribution layer of a hierarchical network, what are two advantages of using Layer 3 devices instead of Layer 2 switches? (Choose two.)

  • creates fewer IP subnets to configure and manage
  • provides connectivity between different VLANs
  • enables traffic filtering based on subnet addresses
  • provides reliable connectivity to end users
  • reduces the number of redundant links required

Explanation: Communication between endpoints on different access layer switches occurs through the distribution layer. The distribution layer provides a boundary between the Layer 2 domain of the access layer and the Layer 3 domain of the core. This boundary provides two key functions for the LAN. On the Layer 2 side, the distribution layer creates a boundary for Spanning Tree Protocol (STP), limiting propagation of Layer 2 faults. On the Layer 3 side, the distribution layer provides a logical point to summarize IP routing information when it enters the core layer. The summarization reduces IP route tables for easier troubleshooting and reduces protocol overhead for faster recovery from failures.

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