If you’re working toward your CCNA certification, you’ll probably want to review some CCNA books that can help you learn the material before your exam.
CompTIA recommends that the candidates taking this certification should have CompTIA Network+ and two years of experience in IT administration with a security focus.
If you are looking for a book that will be able to teach you the who, what, where, when, and how of network administration, go through this list of Cisco certification books for the networking professional.