If your resume mentions holding a second-class computer certificate, the employer or recruiter may check it to know your specific skill level and ability. Therefore, when you mention any skills or certificates in your resume, you should make sure that you really have the relevant skills or certificates and are competent for the relevant work. At the same time, you need to prepare relevant materials that can prove that you have the corresponding skills or certificates for future reference.
Resume, as its name implies, is a concise written introduction to a person's education, experience, specialties, hobbies and other related information.