15-04-16

VMware VCAP6-DTM Design – Exam Experience

VMW-LGO-CERT-ADV-PRO-6-DSKTP-DESIGN-K

I just got back from sitting the beta of the VCAP6-DTM Design exam, so I thought I would give a bit of feedback for anyone thinking of doing it any point in the future. Obviously the caveat to this post is that the exam today was a beta (so still very much in development) and also that it’s still under NDA, so no real specifics, I’m afraid.

The exam itself was 38 questions over 4 hours, although I completed it with about an hour to spare. I got the invite a couple of weeks ago and thought “why not?”. It’s only eighty quid, and you don’t often get the chance to sit a VCAP for that low fee.

The design exam takes the form of drag and drop and the design canvas questions. I kind of felt under no real pressure to deliver on this exam – I’m not currently doing much in the way of the VMware stack, so it was almost a bit of fun. I remember sitting the VCAP5-DTD (as was) and feeling a lot more time pressured and knowledge pressured, but I reckoned it up and it was over three years ago now! Time flies, and I’m certainly much more experienced, not just as an architect but also with View.

I think in the released exam, you only get 6 design canvas questions, but in today’s beta I got a lot more than that! I can’t recall exactly how many, but there were at least a dozen, I’d say. I’m not sure if that was just a data gathering exercise or if that is the way the exam will go, but best to know your reference architectures if you’re planning to sit this exam later in the year.

The exam also seemed to be much more in tune with the way the VCDX is done, in respect of assumptions, constraints and risks and also requirements. You also need to understand the differences between logical, conceptual and physical designs and also functional and non-functional requirements. I think this exam will prepare you much better for a VCDX crack, I can’t honestly remember if the original VCAP5-DTD ran along those lines.

In terms of tech, a good chunk of the exam is made up of existing View technologies, so understand all the core components well:-

  • Connection Servers
  • Security Servers
  • Desktop Pools
  • Full and Linked Clone Desktops
  • 3D Graphics
  • ThinApp
  • RDSH (quite a lot of content on that)
  • View Pods
  • Pod and Block Architecture
  • Workspace

I’ll be honest and state right now I’ve never touched AppVolumes or Mirage, less seen it in the field. I spent a chunk of time over the last couple of days looking at some of the linked documentation from the exam blueprint, such as reference architectures, use cases and also the product documentation.

As it’s a design exam, it takes an architectural approach so you don’t need to know which vdmadmin command to run to perform a given task, for example. What you do need to know is what components do what, how they link with each other and what he dependencies are. It’s a lot more in depth than a VCP, but if you have spent any time in the field doing a requirements analysis and then a subsequent design and delivery, you should be fine.

I didn’t take a lot of care with my answers in the sense that I didn’t really agonise over them. I did check them before I moved on, but as I said, I felt no pressure and I really just went with my gut instinct. In most cases, that’s usually the right way.

In terms of non-View components, I’d say you need to know and understand the high level architectures of AppVolumes and Mirage. I can’t recall any questions on the Immidio product, so maybe that didn’t make the cut or maybe my question pool just didn’t contain any. Latterly though, I did get some questions that referred to the “traditional” Persona Management. Wouldn’t hurt to have a basic understanding of Immidio though (or whatever it’s called these days).

There are a few questions where you need to count your fingers – there is no access in the exam to a calculator, which is a massive pain in the arse. Microsoft exams always have it, not sure why VMware seem intent on exam candidates getting their fingers and toes out. Let’s be honest, you wouldn’t do that in the field, would you? I did comment back that a calc would be very handy for someone like me who is incredibly lazy when it comes to arithmetic!

So to sum up, not massively different from the VCAP5-DTD I remember, with core View still very heavily tested. As I mentioned previously, make sure you have a good working knowledge of AppVolumes and Mirage in terms of the architecture and what the component roles are. Probably wouldn’t do any harm to understand and remember what ports are used in which scenarios, either. Configuration maximums too – you’ll need to know how many users a given component will support when designing a solution for a specific number of users.

I won’t get the results now until 30th June or so (that’s what the beta exam page says, anyway), so we’ll see. Do I think I’ve passed? Who knows. I’ve given up predicting things like that after I did the VCP-CMA beta thinking I’d done well, only to crash and burn. It has no massive effect on me anyway, as I’m currently 100% focused on AWS and Azure, but it would be nice to top up my collection of VCAPs further. As always, any questions, hit me up on Twitter but just don’t ask for any exam question content specifics.

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