You want to implement a network topology that provides the best balance for regional topologies in terms of the number of virtual circuits, redundancy, and performance while establishing a WAN…

Question

Options

• ABus topology
• BFully meshed topology
• CStar topology
• DPartially meshed topology

• A
  2% (1)
• B
  4% (2)
• C
  9% (4)
• D
  84% (38)

Explanation

Partially meshed topology strikes the optimal balance for regional WAN designs by connecting only the most critical nodes to multiple peers, reducing the total number of virtual circuits compared to full mesh while still maintaining redundant paths where they matter most.

Why the distractors fail:

• A. Bus - A single shared backbone with no redundancy; a single break disrupts the entire network, making it unsuitable for WAN reliability requirements.
• B. Fully meshed - While it maximizes redundancy and performance, it requires n(n-1)/2 virtual circuits, which becomes prohibitively expensive and complex at scale - the opposite of "balance."
• C. Star - All traffic flows through a central hub, creating a single point of failure and a performance bottleneck with zero redundancy by default.

Memory tip: Think of "partial mesh = partial cost, partial risk." Full mesh = every benefit but unaffordable; star = cheap but fragile. Partial mesh lives in the sweet spot - the classic exam signal for "best balance" in WAN/regional topology questions.

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