2014年5月7日星期三

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Code d'Examen: VCAP5-DCD
Nom d'Examen: VMware (VMware Certified Advanced Professional 5 - Data Center Design (VCAP5-DCD))
Questions et réponses: 279 Q&As

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NO.1 Only a software vendor develops a standard process or configuration.
A. True
B. False
Answer: B

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Explanation:
A best practice is based on experience with delivering a solution.
A new product will have limitedbest-practice information except for vendor- or
vendor-partner-based recommendations.
The longer atechnology is used in a community, the more potential success; therefore, best
practices may berecommended by non-vendor-related people.
It is up to a designer to validate this information rather thanignore it straightaway. Chapter 6,
Validation, Thoughts, and Processes
19. A logical diagram shows vendor-specific information.
A. True
B. False
Answer: B

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Explanation:
A logical diagram shows the high-level components of a design or platform. It may
includedescriptions such as data flow and entity relationships.
However, it does not show specific vendors (such asDell or HP). Chapter 2, Creating the design
20. Which of the following vSphere cluster technologies would meet the application
requirements specified in the high-level design extract for question 2?
A. FT
B. HA
Answer: A

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Explanation:
vSphere HA would need to wait at least 10 seconds before a restart would be possible. Thiswould
not meet requirements. In the event of a restart, it could be possible to be without the application
feeddatabase for about 15 minutes. VMware FT would enable the service to be provided without
additionalredevelopment. Chapter 4, Storage Design - The Logical & Physical Approaches

NO.2 You are the technical designer for a vSphere platform transformation project. After
conducting SME interviews and using various platform information-gathering methods, you have
created a high-level design document.
This document specifies the following:
Requirements:
R1. The solution must not have a single point of failure.
R2. Production applications must not have an outage of more than 10 seconds.
R3. Data must be based in the UK.
R4. There is a 7-year retention policy for contracts.
R5. Applications should support existing and developing workloads for the next 3 years' growth.
Spec of servers:
Web 1 vCPU, 2 GB RAM, 100 GB storage App 1 vCPU, 4 GB RAM, 100 Gb storage
DB 2 vCPU, 16 GB RAM, 750 Gb storage
At a late stage in the software development life cycle of a production application developed inhouse,
an unfortunate issue was identified when the application was deployed to the production vSphere
cluster. The production core stacked switch has capacity issues, and this is having a serious impact
on all applications for which the switch is providing network services. Within the test system, the
application works as intended in the single test VLAN and with a single-host configuration.
Which of the following could be tried to help in this situation, from a vSphere perspective? (Choose
two)
A. Redevelop the application for a virtual platform
B. Place the application into a single-vApp network
C. Add DRS rules to keep network traffic within the same host, where possible
D. Configure network I/O control
Answer: B,D

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Explanation:
If you limit the application traffic to a specific dedicated network (that is, a separate VLAN) andusing
enforced DRS affinity rules, the application traffic will not traverse the ESXi host's physical
networkinterfaces. This will ensure that the impact of the application is minimized, while also
ensuring that theapplication itself is not limited. The application servers already have vCPU settings.
This suggests that the system has already beingvirtualized in both types of environments. Network
I/O control could be useful in the event of contention, but therole of a designer would be to plan to
prevent contention where possible; other options would be morebeneficial. In addition,
Requirement 5 specifies that the system should work with workloads over the next 3years. Network
I/O control would suggest contention very early in the platform history. Chapter 4, NetWork -
Logical and Physical Design to allow applications to flow

NO.3 A(n) _____________ is an item that is taken to be true in the design phases but has not been
tested prior to execution.
A. requirement
B. constraint
C. assumption
D. risk
Answer: C

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Explanation:
An assumption could impact your design. It is good to ensure that project team and widerbusiness
are aware of assumptions and that they are agreed and validated as part of the design
considerationprocess. Chapter 2, Gathering Information and Spotting the Gaps

NO.4 A project requirement _______________
A. must be achieved
B. can be set as aspirational but may never be achieved
Answer: A

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Explanation:
A project requirement is a specific deliverable that the business has said must be provided at
theend of a project.
It must always be achieved. Chapter 4, Storage Design - The Logical & Physical Approaches

NO.5 You are a virtualization consultant working on a DR project. You have proposed a solution that
uses SAN replication technology to replicate production virtual machine files. This meets the cold
standby requirement.
Which of the following could be a design constraint?
A. The hardware currently being used in the datacenter is out of support.
B. The company is undecided about the choice of centralized storage to be used in the enterprise.
C. The company is at the end of year 1 of a 3-year contract for the point-to-point link between Site A
and Site
D. This link is currently 10 MB.
Answer: C

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Explanation:
An item from the current state analysis that would restrict or change a design choice is potentiallya
constraint. Such factors can limit a design and in some cases prevent the realization of a project
vision. Chapter 2, Gathering Information and Spotting the Gaps

NO.6 The vCenter database is powered off ungracefully, along with a three cluster nodes in a
separate cluster.
Will the failed existing ESXi host nodes restart correctly using Auto Deploy?
A. Yes
B. No
Answer: A

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Explanation:
Auto Deploy enables an untrained IT professional to increase capacity while ensuring quality
andconsistency within a cluster.
However, there is a dependency on the vCenter server and Auto Deploy serverroles at different
times.
In this case, the ESXi hosts have already booted successfully.
This means that allsubsequent reboots will be controlled using configuration from the Auto Deploy
server, not vCenter.
If thevCenter database is impacted, the ESXi hosts will automatically restore.
Even in the event of no vCenteravailability, hosts will use the last-known copy of a distributed switch
or the configured vSphere switch.
Chapter X, Putting it all together

NO.7 Based on the information in the high-level design extract for question 2, which type of data
store would be required?
A. VMFS
B. NFS
Answer: A

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Explanation:
Because fault tolerance would be the only VMware technology that would meet the
technicalrequirements, VMFS is the only choice here. Chapter 4, Storage Design - The Logical &
Physical Approaches

NO.8 You are a technical consultant designing a solution for an online retail company. The project
vision is to deploy a hybrid cloud, with the internal team developing the website on internal
infrastructure and migrating production-ready applications to a hosting provider. The project is
expected to ease deployment and require less infrastructure capital expenditure-without lowering
application quality.
Which of the following is a risk to the project?
A. The solution must adhere to ISO 27001.
B. Change control of the hosting vCloud platform is not under full control of the internal business.
C. The hosting provider outsources the platform support to the platform vendor.
D. The applications to be deployed on the production hosts are not fully developed, although a beta
exists.
Answer: B

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Explanation:
The technical design process enables the platform designer to work in a methodical way and
withothers who have similar objectives. A risk is that a project item could potentially prevent the
vision or aspectsof it (requirements) from being created. Chapter 1, The Technical Design Process

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