Exam Overview:
- Number of Questions: 125
- Test Duration: 4 Hours
If you prefer reading, get a proper book (ISBN - 978-1119252245)
https://www.amazon.co.uk/CEHV-Certified-Ethical-Hacker-Version/dp/1119252245
I can guaranty, that there will be
- NMAP questions
- tcp/ip and tcpdump questions
And that is why as a t the last stage of your preparation familiarize yourself with the following:
https://www.sans.org/security-resources/tcpip.pdf
https://blogs.sans.org/pen-testing/files/2013/10/NmapCheatSheetv1.1.pdf
Good Luck!