1.Exam appointments can be booked in the following three ways to book an exam 1) Book an exam online through Prometric's website 2) Register at a Prometric test center 3) Register for an exam appointment at your nearest Prometric-authorized test center.2. Payment can be made by credit card, exam voucher, or cash Payment can be made by credit card or exam voucher.3. Exam Voucher Purchase Purchase an exam voucher at a Prometric-appointed test center or purchase an exam voucher from HALP. Purchase exam vouchers at Prometric's designated test centers or purchase exam vouchers from HALP. Special Note: There are three types of HCIE exam vouchers: Written Exam Voucher (for written exam), Lab+Interview Voucher (for taking the first interview after passing the first Lab), and Interview Voucher (for taking the make-up interview within the validity period of the Lab score if the first interview is not passed). 4. Take the exam at the booked test center at the booked time, and the test results will be given by the test center on-site at the end of the exam. 5. Written test results are valid for 18 months after the output of the test report card, and you can register for the LAB test within the validity period. Special Note: The 18-month validity period of the written examination results means that after you pass the written examination and get the results, you can make an appointment for the LAB examination within 18 months, but you cannot make an appointment for the LAB examination after 18 months within the 18-month validity period. Huawei will not accept any extension application for any reason regarding the validity of the results.