I'm an expert in the field of networking, with a particular focus on Cisco certifications. To address your question about the number of questions on the CCNA (Cisco Certified Network Associate) exam, it's important to clarify that there are different versions and tracks for CCNA, and the number of questions can vary accordingly.

As of my last update, the CCNA exam has evolved, and the specific version you're referring to, ICND1, has been retired since August 20, 2016. The ICND1 exam, which was part of the CCNA certification process, was known to have a duration of 90 minutes and contained between 45 to 55 questions. This exam was conducted in English and Japanese and was administered through Pearson VUE. Candidates were required to register for the exam and adhere to the current policies and requirements set forth by Cisco.

It's crucial to note that the CCNA certification has undergone changes, and the exam structure may have been updated since the retirement of the ICND1 version. For the most accurate and up-to-date information, it's always best to refer to the official Cisco website or contact Cisco directly. They will provide the latest details on the exam format, including the number of questions, duration, and the languages in which the exam is offered.

In addition to the exam specifics, preparing for the CCNA exam involves a solid understanding of networking fundamentals, Cisco devices, and the ability to configure and troubleshoot networks. It's recommended to take advantage of study materials, practice exams, and training courses to ensure you're well-prepared for the certification process.

Now, as per your request, I will translate the above information into Chinese.

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Interconnecting Cisco Networking Devices Part 1Exam Number100-101 ICND1 Retired: August 20, 2016Duration90 Minutes (45-55 questions)Available LanguagesEnglish, JapaneseRegisterPearson VUEExam PoliciesRead current policies and requirements3 more rowsread more >>