A.匯聚層B.接入層C.主干層D.核心層
A.壓力測試B.基準(zhǔn)性能測試C.數(shù)據(jù)庫測試D.負(fù)載測試E.故障測試
A.1000Base-TXB.1000Base-CXC.1000Base-SXD.1000Base-LX