As anyone that has taken any type of IT certification test knows, I cannot quote actual questions, but I wanted to write a post about what I used to prepare for the exam and offer some post exam guidance.
This exam differs from the VI3 test in a few ways. First off, it is now 85 questions versus the 60 of the VI3 test. It also seemed to ask for a more in-depth understanding of the software including some terminal commands (firewall related). I have updated my VCP page with the information below as well. Document titles are links (need to fix the CSS, apologies).
I would study the following documents from VMware:
Configuration Maximums for VMware vSphere – This is probably the most important document that you can commit to memory. Many of the questions will be indirectly asking questions about a maximum.
Basic System Administration- This is the VMWare document that talks about administration of a virtual infrastructure on a broad scale. It will help re-affirm what was taught in class about the administration of a virtual infrastructure.
ESX and vCenter Server Installation Guide- This guide covers the installation of ESX and vCenter. The partitioning section for ESX is of particular importance.
ESX Configuration Guide – This document covers the configuration of ESX. The sections of most importance are the networking and security sections.
Resource Management Guide - This guide offers in-depth discussion of resource management in vSphere.
I used the following additional resources:
Simon Long’s vSphere Study Notes – The most complete VCP study guide I have ever seen. It has direct links to each part of the exam blueprint.
Simon Long’s Practice Tests – These are great exams. The questions are in a format similar to the actual exam and he is adding questions all the time.
VMware Mock Exam – This is the sample test from VMware. In my opinion it is not as thorough as Simon’s, but it is another practice test none the less.
I hope that information helps. Simon’s blog is really an invaluable resource for preparing for this exam. Thanks Simon! As with any exam, go in with a strategy and take it slow. Good luck!

Hey, congrats on passing VCP4.I got it on Saturday and just put my thoughts up here:http://www.thattommyhall.com/2009/09/28/getting-vmware-certified-professional...
[...] Go here to read the rest: First Look: VCP 4 (vSphere) Exam – Virtualization, UNIX, Business … [...]