VCAP5-DCD VMware Certified Advanced Professional 5 - Data Center Design (VCAP5-DCD)

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Question 1

If the event of a vCenter failure, which of the following is not true?

  • A. VMware vMotion is not possible.
  • B. DRS functionality is lost.
  • C. Auto deployment of existing ESXi hosts is impossible.

Answer : C

Explanation: The Auto Deploy feature requires the vCenter for the original deployment and configuration. Following the first boot, unless a change has been added in the Auto Deploy rules, the subsequent reboots have a dependency on the Auto Deploy server, not the vCenter.

Question 2

Which of the following factors should influence the decision of whether to virtualize an
application? (Choose three)

  • A. Whether it is supported on a virtualization platform
  • B. Licensing costs in a virtualization platform
  • C. Compliance considerations (such as inability to share infrastructure due to regulations)
  • D. Whether the software is custom and has not be widely virtualized in the field

Answer : A,B,C

Explanation: Good design should meet the project requirements and consider the properties of assumed platform design. Protecting data requires that a system be available and manageable, that it have good performance, and that it be easy to recover and be secure.

Question 3

An application has an SLA which states that the application must be restored within 12
hours, with no more than 10 minutes of data loss. This means the application has an RTO
of 12 hours and an RPO of 10 minutes.

  • A. True
  • B. False

Answer : A

Explanation: The RTO is the amount of time until a crashed application should be back online. The RPO is the tolerated amount of data loss.

Question 4

An application has an SLA which states that the application must be restored within 12
hours, with no more than 10 minutes of data loss. This means the application has an RTO
of 10 minutes and an RPO of 12 hours.

  • A. True
  • B. False

Answer : B

Explanation: The RTO is the amount of time until a crashed application should be back online. The RPO is the tolerated amount of data loss.

Question 5

You are planning a vSphere 4.1 to 5.0 upgrade. The production datastores are 6 TB. Each
datastore consist of thee extents of 2 TB and is currently 65% full. The operations team
would like to keep the system as close to the current configuration as possible. The
upgrade process also requires as little service impact as possible. In addition, you wish to
use storage I/O control as soon as possible, due to a mission-critical business application
requirement. Which of the following would be the correct approach?

  • A. Create a new VMFS 5 datastore of 6 TB Enable storage I/O control Migrate the VMs using storage vMotion Configure storage I/O shares as required
  • B. Upgrade the VMFS 3 datastore Enable storage I/O control Configure storage I/O shares as required

Answer : A

Explanation: When a datastore with VMFS v3 is upgraded with extents to VMFS v5, the logical attributes and extents are not changed. Storage I/O control cannot be used with datastores composed of extents.

Question 6

DRS rules can help satisfy availability concerns within a cluster; however, if used
extensively, they may cause a performance issue with vCenter.

  • A. True
  • B. False

Answer : A

Explanation: DRS rules can be extremely useful for a number of reasons, such as redundancy, network bandwidth, and performance management. However, if they are used extensively, functionality such as DPM may become less effective (that is, hosts will not be able to power off due to rules and will use more power than required). Chapter 4, Management/Platform Design

Question 7

Which of the following is not a component of a virtual design?

  • A. compute layer
  • B. resource layer
  • C. network layer
  • D. storage layer

Answer : B

Explanation: The components of a virtual design include the management layer, the networking layer, the storage layer, the guest VM layer, and the compute layer.

Question 8

Which component of a good design is described as the quantitative statement of what the
project does and does not include?

  • A. Scope
  • B. Constraint
  • C. Vision
  • D. Assumption

Answer : A

Explanation: The scope is the quantitative statement of what is included in a project, or, more pertinently, what is not included in the project.

Question 9

You are a VMware consultant working at a small managed services company. The
company has won a contract with a large company, Company A, to host its test and dev
platform, with the chance on annual review to host the production platform.
Although you have been engaged early in the project due to business requirements, the
budget for the project has already been combined with that for another DR project for
another company, Company B. The thought process for this decision is that, if needed, the
test systems from Company A have a lower requirement in the unlikely event of Company
B having a DR event.
All the items have been bought and are to be delivered. Your role is to take the equipment
provided and construct, develop, and implement a scalable working vSphere platform. The
following requirements are stated:
✑ Company A test machines must be provided with sufficient resources for BAU.
✑ Company B systems can be made available with minimum impact to Company A.
✑ For Company A, RTO is 7 days, and RPO is 1 month.
✑ For company B, RTO is 1 hour, and RPO is 15 minutes.
Using a shared infrastructure in this way is a risk to the project.

  • A. True
  • B. False

Answer : A

Explanation: The technical design process enables the platform designer to work in a methodical way and with others with similar objectives. A risk is an object that could prevent the delivery of the project requirements. Chapter 1, The Technical Design Process

Question 10

It is a best practice to give a virtual machine a single virtual CPU unless there is a
compelling reason to give a virtual machine more than one virtual CPU.

  • A. True
  • B. False

Answer : A

Explanation: A majority of your virtual machines can run with a single vCPU. Unless the application specifically requires multiple vCPUs, try to start with one.

Question 11

In which type of VLAN does adding and removing the VLAN tag occur at the virtual switch?

  • A. Virtual switch tagging
  • B. VLAN trunking
  • C. Virtual guest tagging
  • D. External switch tagging

Answer : A

Explanation: When VLANs are configured on a virtual switch, the VLAN tag is added to outbound traffic and removed on inbound traffic.

Question 12

Which design is created first?

  • A. Conceptual design
  • B. Physical design
  • C. Logical design
  • D. None of the above

Answer : A

Explanation: A conceptual design is a high-level overview of the suggested system. The conceptual design is created first and is usually the starting point for the logical design.

Question 13

You are working on a project to deploy a critical multitier web application. The application is
as follows:

In the scenario described, which of the following would be a good alternate design choice
to discuss with the vendor/web development team?

  • A. Consider consolidating the database servers into one large server for ease of management, backup, and licensing costs.
  • B. Consider creating a file server with UNC file shares presenting the read-only data for web servers. This would reduce the amount of space required from approximately 3 TB to approximately 150 GB.
  • C. Reduce the specifications of each web server and increase the number of servers to distribute the load more widely across the cluster.

Answer : B

Question 14

While viewing the ESXi host resource tab, you notice that you have 1 GB of available
memory. You attempt to turn on a virtual machine with a 1 GB reservation, and the virtual
machine will not power on. What is preventing the virtual machine from powering on?

  • A. There are too many virtual machines on the host.
  • B. For a virtual machine to start, there must be enough available memory for the reservation and memory overhead.
  • C. A reservation was set too high.
  • D. A CPU reservation was not set.

Answer : C

Explanation: All virtual machines require some memory to use as overhead to handle virtualization. Even if a virtual machine did not have a reservation, real memory would still be required for the overhead.

Question 15

You are a VMware designer working on virtualizing a business application. The SLA
specifies that the RTO requirement is 4 hours, and the RPO requirement is 9 hours. After
months of successful use, the system crashes at 1 p.m. To meet the project SLA, which of
the following is true?

  • A. The application must be brought online and be accessible to users by 10 p.m.
  • B. The application must be brought online and be accessible to users by 5 p.m.

Answer : B

Explanation: The recovery time objective (RTO)also known as the return to operationis the amount of time it takes to restore a service after a failure has taken place. The recovery point objective (RPO) is the point in time to which the system needs to be restored following a failure.

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