ccna考试之考试原题
1.What is the correct order for the OSI model?P=Presentation, S=Session, D=Datalink, Ph=Physical, T=Transport, A= Application, N=NetworkA. P S A PH D N T B. A P S T N D PHC. PH D N T A S P D. P S A T N D PHAnswer B. It is crucial you not only memorize this and know what each layer does.2. What
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