單項選擇題

如圖所示,LNK/ACT(綠色)表示()

A.常亮,以太網(wǎng)電口鏈路正常;
B.不亮,以太網(wǎng)電口鏈路正常;
C.閃爍,以太網(wǎng)電口鏈路無數(shù)據(jù)收發(fā).

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