First, the original question and the answer provided
Second, analysis
The job description is three interfaces, but the C answer uses only two interfaces and feels ABCD can:
A answer, three interfaces are mixed mode;
b answer, two interfaces for the interface pair mode, one interface for the hybrid mode;
C answer, an interface using VLAN pair online mode mode, the other one for the hybrid mode, but only two interface, the problem has been explained three interface, think is not the best answer;
D answer, three interfaces are VLAN pair online mode mode
Third, test
A. Three interfaces are mixed mode
B. Two interfaces for the interface pair mode, one interface for the hybrid mode;
C. One interface uses VLAN pair online mode mode, the other is a hybrid mode
D. Three interfaces using VLAN pair online mode mode
------The actual test on the same IPs on the above four species are feasible.
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