Self-built optical transmission private network can achieve physical isolation, so it must be more reliable and more economical.

Question

Options

• ATrue
• BFalse

• A
  18% (7)
• B
  83% (33)

Explanation

B is correct because the statement contains two separate claims that are both false as an absolute rule. Physical isolation does improve security, but it does not automatically guarantee greater reliability or economy.

Why "True" (A) is wrong: A self-built optical private network can fail due to equipment failures, fiber cuts, or lack of redundancy - issues that a well-managed shared or carrier network may handle better through built-in redundancy and professional maintenance. Physical isolation addresses security, not inherently reliability.

Why the "more economical" claim fails: Self-built private optical networks require significant capital expenditure for fiber, equipment, and ongoing operational costs (maintenance, staffing). Leasing bandwidth from a carrier or using a shared network is often far more cost-effective, especially for organizations without high-volume or highly sensitive traffic needs.

Memory tip: Think of it as "isolated ≠ invincible or cheap." Private networks trade cost and complexity for control - reliability and economy depend on how well the network is designed and maintained, not merely on whether it is physically isolated.

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