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RCDD · Question #49
RCDD Question #49: Real Exam Question with Answer & Explanation
The correct answer is E. The physical ring provides a redundant cable path for disaster recovery. A physical ring topology is chosen primarily because it creates two independent cable paths between buildings, ensuring network availability if one path fails.
Question
When designing a connection to an outlying building you decide to choose a physical ring. Your primary reason for considering a physical ring is:
Options
- AYou have easy access to an existing pathway
- BThe design is quick and easy to install
- CThe campus suits this design
- DThe design is cost effective
- EThe physical ring provides a redundant cable path for disaster recovery
Explanation
A physical ring topology is chosen primarily because it creates two independent cable paths between buildings, ensuring network availability if one path fails.
Common mistakes.
- A. Existing pathway access is a practical installation convenience, not a technical justification specific to ring topology.
- B. A physical ring is more complex to install than a simple point-to-point run, so ease of installation is not a valid reason to choose it.
- C. Campus suitability is too vague a reason and does not identify any technical advantage that a ring topology specifically provides.
- D. A physical ring requires more cable than a direct point-to-point run, making it generally less cost-effective rather than more.
Concept tested. Physical ring topology for redundant backbone cabling
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