The Huawei NetEngine 8000 M6 series routers are designed for robust performance in various environmental conditions. For models with DC power supply , the normal operating temperature range is -20°C to +65°C .
Below is an explanation of the other options:
0°C to +45°C : This range is too narrow and does not reflect the router's actual capabilities.
-40°C to +65°C : This range applies to extreme environments and is typically associated with AC-powered models or specialized variants.
-20°C to +45°C : This range is incorrect for DC-powered models, as the upper limit is lower than the actual specification.
Thus, the correct answer is B , as the operating temperature for DC-powered NetEngine 8000 M6 routers is -20°C to +65°C .
[References:, Huawei NetEngine 8000 M6 Series Router Product Documentation, HCSA-Presales-IP Network Documentation., , , , , ]
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