Cisco Enterprise Network Core Technologies; CCNP Enterprise Design ENSLD 300-420 Official Cert Guide: Designing Cisco Enterprise Networks; CCNP Collaboration Core CLCOR 350-801 Official Cert Guide. here are even more books that you can obtain. You can buy them on the Cisco Press store or look for them on Amazon. 4. Expert Level The certificates from this level are Cisco Dumps considered the most prestigious in the IT field. The key concept of this track is to check your professional-level skills by offering you the core exam from the previous track and evaluating your expert-level practical skills with the help of lab tests. The candidates are expected to have a good Cisco Exam dumps understanding of the exam objectives and are strongly recommended to have 3 to 5 years of experience. The other professional certificates or courses are not required..