Be aware that there are MANY things you will not find in the certified guides or even in the configuration guides; like on my exam I had questions relating to STP, requiring me to explain STP timers, but not hello time, forward time or max age timers; the question was about bridge_transit_delay, media access delay, transmit halt delay. I also had questions about StackWise regarding switch states (waiting,initializing,progressing,ready and provisional state) You will not find any information about that in the certified guides (I do not why these books are “certified guides” as they are useless as such)
IF you want to base your learning on CCNP Switch Certified Guide by David Hucaby - you are just wasting your time and money. I know the book cover to cover - did not help my with my exam. Even reading Catalyst 3750 Configuration Guide did not help me either. Additionaly there are many things in the Hucaby’s Guide that are just wrong, like the author claims, that if you have a port attached to a vlan and if you remove the vlan from the switch later and does not change the vlan on the port to one that still exists on the switch, the port GOES BACK TO DEFAULT VLAN!!! Which is not true as far as I know…
They are question on the exam where actually there is no right answer yet there is no option “none of the above” in the answer list. Had this regarding VTP configuration - (check this out: https://www.examtopics.com/exams/cisco/300-115/view/53/ - last question) All of the switches run VTP version 3, two switches are servers and one is client. But NONE of the vtp servers are primary, which can be seen when running “sh vtp status” and checking the ID of primary server. I tried the answers with my home lab - none of them were right.
But … what can you do as Cisco will not tell you where you were wrong. There were few other questions that I had a daubt about as well, but since I do not know where I did wrong, I can’t challenge Cisco at all; they just do what they want.
If you look at different trainings - say Kevin Wallace - do not believe when they say that Switch exam will not require you to configure AAA authentication or alike, cause this is left for security path; I had that on my two exams and I have to configure AAA port based authentication from scratch; I also had to configure VACL’s
Summing up - you need alot of other sources and alot of work is waiting for you. CCNA was like a walk in the sun for me, CCNP - quite opposite (because of the fact that I believed that Cisco Certified Guide is enough to pass an exam and it is not; it is at the best 20% of what you have to know at the most)