So after just missing my first attempt at my DCD I figured I would take what I learned from that experience and help build some new practice material for those who are attempting the VCAP-DCD5.1/5.5 exam. During my studies I found a lot of good material out there around the items on the blue print but didn't find a lot of material to help me get into the mind set / exam mode per say. A good example of this is Joshua's Test Track for the DCA. He has created some really good practice questions with a lab to boot to really get you in the right mind set for the DCA. What I would like to do is build something simular for the DCD.
With that in mind, here is the project:
I would like to build a interactive webpage that will simulate what the design questions and drag-n-drop questions are like on the exam with some practice questions created by myself and other people of the community. How I'm going to try and make it, I'm going to try and use jsPlumb or maybe other simular drag-n-drop java libraries with html 5 to help create an enviroment. Here is a link to the jsPlumb so you can kind of get an idea of how it will work:
Other Java libraries to try
This is what it will look like:
Once the frame work is in place we can create test questions and have an interactive testing system to also help grade peoples awnsers to help prep people for the DCD exam prior to writing.
Milstones of the project:
1.) Create Photoshop and site layout - I have already completed this and continueing to work on it to get more scenario's, I will post the photoshop .psd shortly incase anyone wants to use them to create there own for the time being
3.) Put it all together and post it. I'm in the process of registering a blog so once I get that done and everything is together I can post the interactive page there and link it in the forums
4.) Shed less tears over failed DCD attempts
Here are the first two questions I have created:
DCD-Q1-A1 - One possible design choice to suit all the requirements, there is many others. I will also build on this design and put a section for NIOC for those who want to add in 10GB NICS
Now for a quick explanation to my awnser to the design. For this one I put in an additional 2xQuad Port nics in the available PCI slots. This allows for 2 nics for mgmt, 2nics for iSCSI, 2nics for backup, 2 nics for FT, 2 nics for DMZ for isolation, and 4 nics for the VMware Network as one of the requirement was it needed 2.43Mbps throughput. Since you never truely get 100% on network transfer speeds I typically build out to 80%, which is 800Mbps for a 1GB nic. So to meet the 2.43Mbps you would need a minium of 3 1GB NIC's, however this leaves a single point of failure as if one nic fails the VM Network can only push 2Mbps of traffic till that NIC is back online. Thus I bumped the VMnetwork to 4 1GB NIC's so there was no single pont of failure. If anyone else has better ways or other ways please feel free to post on it or work through the question.
A quick Explantion of the design layout
Special thanks to lbourque for running this past the VMware Certification team so fast and getting the green light
If anyone wants to create some questions please post them here as I've told lbourque I'd post them here so they can be looked over incase there is any issues with them.
Current questinos / designs i'm working on:
vApp desing question
Storage design question
Calculation questions IE. what is the min amount of hosts you need to run X number of servers with X cpu, X memory, X networking
Multiple choice questions to hammer on the blue print topics like RPO, RTO, ect.
Thanks again, and I hope to get enough free time in the next few weeks to make some good progress on this.
Also please excuse any spelling mistakes / type-o's, I put this together pretty quickly and haven't had a great deal of time to look it over
Cheers everyone and good luck!