What is modularity in network design?

Question

Options

• Aability to bundle several functions into a single layer of the network
• Bability to create self-contained, repeatable sections of the network
• Cability to self-heal the network to prevent service outages
• Dability to scale and accommodate future needs of the network

• A
  4% (2)
• B
  7% (3)
• C
  2% (1)
• D
  87% (39)

Explanation

Modularity in Network Design

Modularity refers to the ability to scale and accommodate future needs of the network (D), meaning the network is designed in modular "building blocks" that can be easily added, removed, or upgraded as requirements grow - making scalability its core purpose. Option A describes convergence or network layering, where multiple functions are combined into a single layer, which is the opposite of modular separation. Option B is actually closer to the definition of redundancy or network segmentation, where repeatable sections exist for fault tolerance, not scalability. Option C describes network resiliency or self-healing, a feature associated with protocols like Spanning Tree Protocol (STP) or dynamic routing, not modularity.

Memory Tip: Think of modularity like LEGO bricks - you can keep adding identical blocks to make your structure bigger. The keyword to associate with modularity on the exam is "scale" or "grow." If you see a question about future-proofing or expanding the network, think modularity = scalability.

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