Cyber threats have evolved significantly in the past decade, and protecting your businesss network from cyber attacks should be a top priority.Test your knowledge on cybersecurity topics and terms by taking these 20-question quizzes.CompTIA Security+ Practice Exam. With the CompTIA Security+ Certification, you’ll be able to demonstrate your knowledge regarding communication security, infrastructure security, cryptography, access control, authentication, external attack mitigation and operational and organization security.The Security+ exam covers the most important foundational principles for securing a network and managing risk. Access control, identity management and cryptography are important topics on the exam, as well as selection of appropriate mitigation and deterrent techniques to address network attacks and vulnerabilities.