CCNA Exam question

in CCNA & CCENT
Hi all ,
I have a little question for the cisco certified people .
If I successfully passed the ccna exams on the cisco press books many times with an average score of 90% and above ... Can I sustain the ccna exam with a good preparation ?
Thanks in advance
I have a little question for the cisco certified people .
If I successfully passed the ccna exams on the cisco press books many times with an average score of 90% and above ... Can I sustain the ccna exam with a good preparation ?
Thanks in advance

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