Yes, Netowrk+ certification is more difficult in comparison with other entry-level Network certification exams. Being entry-level doesn't mean that it is easy. But if you are preparing the right way through the right resources, you might be able to clear the exam in one go. Apt means like, Intellipaat's CompTIA Network+ Course, which offers you plenty of projects and assignments for improved hands-on experience. Also, watch this video on Network Security Basics to get your fundamentals clear.