H11-811 · Question #25
In U1900 series unified gateway, which of the following models supports dual main control board? (Multiple Choice)
The correct answer is C. U1980 D. U1981. In the U1900 series, U1980 and U1981 are the higher-capacity enterprise models designed for large-scale deployments where high availability is critical - dual main control boards (active/standby redundancy) are a feature reserved for these top-tier models to prevent single…
Question
In U1900 series unified gateway, which of the following models supports dual main control board? (Multiple Choice)
Options
- AU1911
- BU1960
- CU1980
- DU1981
How the community answered
(34 responses)- A6% (2)
- B15% (5)
- C79% (27)
Explanation
In the U1900 series, U1980 and U1981 are the higher-capacity enterprise models designed for large-scale deployments where high availability is critical - dual main control boards (active/standby redundancy) are a feature reserved for these top-tier models to prevent single points of failure.
Why A and B are wrong: The U1911 is an entry-level gateway with limited slot capacity and does not support main control board redundancy. The U1960 is a mid-range model with moderate capacity, but it also lacks support for dual main control boards, making it unsuitable for deployments requiring that level of hardware redundancy.
Memory tip: Think of it as a capacity threshold - in the U1900 series, only models with "80" or higher in their model number (U1980, U1981) cross the threshold into dual main control board support. The "8" signals enterprise-grade redundancy, while "6" (U1960) and below do not reach that tier.
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