The advantages of the optoelectronic integrated solution with built-in PCM include (). (Multiple Choice)

Question

Options

• ASpace saving: 2 sets of equipment become 1 set A.
• BHigh reliability: reduce network layers
• CEasy operation and maintenance: 1 set of network management
• DIncrease network construction costs

• A
  76% (26)
• D
  24% (8)

Explanation

Integrating PCM functionality directly into optical transmission equipment eliminates the need for separate PCM multiplexing units, which drives all three correct benefits. A is correct because merging two equipment sets into one physically reduces rack space and hardware footprint. B is correct because removing the standalone PCM layer means fewer network nodes - fewer components in the signal path equals fewer points of failure and higher overall reliability. C is correct because a unified device is managed through a single network management system (NMS), streamlining monitoring, configuration, and troubleshooting compared to managing two independent systems.

D is wrong because integration reduces construction costs (less hardware to purchase, install, and power), not increases them - making D the opposite of a real advantage.

Memory tip: Think of "1+1=1" - two separate devices (optical + PCM) become one integrated unit, so every benefit flows from that consolidation: 1 space footprint, 1 network layer removed, 1 management system. If an answer choice says integration adds cost or complexity, it contradicts the whole point of integration and is the trap option.

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