What value can self-built optical transmission network bring? (Multiple Choice)

Question

Options

• AProvide end-to-end high bandwidth
• BHigh reliability and secure physical isolation
• CSave room space
• DOne-time investment, long-term benefits

• A
  82% (23)
• C
  18% (5)

Explanation

Self-built optical transmission networks give enterprises full control over their infrastructure, which directly enables end-to-end high bandwidth (A) - no shared capacity with other tenants means you get the full fiber capacity from source to destination. Because the physical fiber and equipment are exclusively yours, traffic is physically isolated from public networks, delivering both the security and reliability described in option B. Option D is correct because while the upfront capital cost is high, optical fiber infrastructure has a lifespan of 25+ years, making it far cheaper over time than perpetually leasing circuits from a carrier.

Why C is wrong: Self-building is the opposite of space-saving - you must install your own ODF frames, amplifiers, transponders, and equipment rooms at each site. Leasing from a carrier offloads that hardware burden and saves room space; building it yourself requires more.

Memory tip: Think of it as buying vs. renting a private highway. Owning it means full lanes for yourself (A), no strangers on your road (B), and the mortgage pays off over decades (D) - but you still have to build the rest stops and toll plazas yourself, so space savings (C) is never part of the deal.

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