What is the difference between 1+1 and 1:1 protection switching?() 1+1 is based on APS, while 1:1 is based on IPS.。 1:1 is used in SNCP switching, while 1+1 is used in MS-SPRing switching.。 1+1 sends signals on Working and Protect paths, while 1:1 sends signals only on Working path.。 1+1 sends signals on Working path ONLY, while 1:1 sends signals on both Working and Protect paths.。
城市公共交通定义、基本任务、地位、特征?
Which two SQL*Loader instructions are used to assemble logical records?() WHEN。 INFILE。 CONTINUEIF。 CONCATENATE。 TRAILING NULLCOLS。
为防止建筑物因沉降不均匀而发生不规则破坏,所设置的缝隙为()。 分仓缝。 沉降缝。 防震缝。 伸缩缝。
程序设计过程的3个阶段是()、()和()。
新斯的明兴奋骨骼肌的作用机制是()