BICSI
RCDD · Question #73
RCDD Question #73: Real Exam Question with Answer & Explanation
The correct answer is A. Hierarchical star. A hierarchical star campus backbone uses a tiered, tree-like structure with a core at the top connecting down through distribution and access layers, each forming a star at its level.
Question
This diagram illustrates a ______________campus backbone design.
Exhibit
Options
- AHierarchical star
- BRing topology
- CBus topology
- DInverted star
- ECollapsed ring
Explanation
A hierarchical star campus backbone uses a tiered, tree-like structure with a core at the top connecting down through distribution and access layers, each forming a star at its level.
Common mistakes.
- B. A ring topology connects each node to exactly two adjacent nodes forming a closed loop, which is architecturally incompatible with the tiered upward connectivity shown in a campus backbone diagram.
- C. A bus topology uses a single shared linear cable segment to which all devices tap in, a fundamentally different physical layout from a layered hierarchical structure.
- D. Inverted star is not a recognized standard campus backbone topology in TIA-568 or BICSI terminology and does not describe the multi-tier design illustrated.
- E. A collapsed ring is a ring topology where all segments terminate at a single central device, which differs from a hierarchical star's distinct tiered layers.
Concept tested. Campus backbone hierarchical star topology design
Reference. https://www.tiaonline.org/standards/tia-568/
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