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Citrix Architecting a Citrix Virtualization Solution 認定 1Y0-A16 試験問題:

1. Topic 1, Healthy Helping Hands
Executive Summary
Healthy Helping Hands is a multi-national health care equipment company with operations in 10 countries. The organization manufactures and distributes a variety of health care products ranging from its unique baby breathing devices to diabetes supplies towheelchairs.
Based on current projections, Health Helping Hands expects to expand the company primarily through small, targeted acquisitions, as well as a modest amount of organic growth. The organization has been affected by numerous technical challenges, specificallywith delivering applications to its users-4.000 employees, approximately 500 of which are contractors In addition, because the timing and size of acquisitions is unpredictable, the IT staff must have the ability to adjust the technical integration of newly acquired companies to accommodate unpredictable timing: for example, while a period of several weeks or months may have been planned, the integration may need to be completed in several days. These challenges caused the company to investigate the CitrixDelivery Center offerings, leading to the CIO's decision to move forward with those Citrix Delivery Center products and features that address IT and user needs.
With users spread throughout numerous offices, some with and some without IT staff, it is imperative that supportability, administration and security are factored into the new solution. However, for the 4,000 employees and contractors within the organization, the CIO has mandated that users should be provided with a highly available virtualization solution that best suits their job function.
1.1 Current Citrix Environment
Healthy Helping Hands currently runs a Citrix Presentation Server 4.0 farm based on Windows Server 2000 that services the Human Resources (HR) applications. Because this product has reached end-of-life' and is no longer supported, and this farm has had numerous growth issues,the CIO has designated that the new design will incorporate XenApp. XenDesktop. And/or XenServer as appropriate to address present and future application andaccess requirements
However, before moving into the design phase, the current Presentation Server environment, as well as infrastructure, user requirements applications and related areas have been assessed to determine current status, issues and considerations fort he new design.
The Consulting project team worked on-site at Healthy Helping Hands during the week of February.1.-5, 2010, conducting this Infrastructure Assessment as defined in the Statement of Work, dated January 20, 201.0. This document represents the deliverable for the Infrastructure Assessment phase of the project.
1.2 Key Project Findings
During the week of February 1, 2010, an assessment of Healthy Helping Hands' Application Delivery environment was conducted and the project team determined several key findings:
-The current environment is built on 32-bit architecture, although some hardware may support 64bit architecture. -The CIO wants to migrate all IT platforms to 64-bit during upgrade/replacement programs only.
1.3 Next Steps
After thoroughly reviewing this document Healthy Helping Hands should take the following actions within the short term (one-to-two weeks) and long term (several weeks or longer):
Long-Term Activities:
-Migrate all IT platforms to 64-bit for compatibility and support
1.4 Issue Status and Resolution
The following issues were also addressed during the course of this assessment:

Users
Currently, only the Human Resources group accesses applications hosted on Citnx Presentation Server 4.0. HR users typically log onto the HR applications suite as needed, approximately two or three times throughout the day and then log off when finished due to security requirements. When a new Human Resources employee joins the company, he/she is added to this group and thus gains access to the HR applications suite.
In general, this group reports overall satisfaction with application access through Presentation Server However, some users have reported printing issues as described in Section 1.4.
Withthe exception of the San Francisco and New York locations where the majority of the IT staff is located, users are generally frustrated with the IT staff because of hardware and application access issues associated with traditional application delivery. Informal and informal settings, the CIO has presented the concept of virtualizing applications and desktops, and users have responded favorably. Thus, the CIO has decided that Healthy Helping Hands will virtualize all applications and desktops, making the delineation based on job requirements.
Client Devices
All of the HR users currently accessing the Presentation Server-based applications do so by means of Windows XP or Windows Vista laptop or desktop computers.
With the exception of Customer Service, mostoffice users have computers that run Windows XP or Vista. The manufacturing employees have access to locked-down antiquated computers on the manufacturing floor and common areas For several years, the Manufacturing Department has reported numerous problems related to frequent equipment failures. This has normally been blamed on the environmental conditions, such as dust, dirt and vibration, found on the manufacturing floor. The Customer Service employees also have antiquated computers. Both the manufacturing and customer service devices will be replaced with new thin client devices as part of this initiative.
Some employees have purchased their own handheld devices, such as iPhone. HP iPAQ with Windows Mobile and Blackberry. As part of an earlier initiative. Microsoft ActiveSync is installed on the Citrix servers to facilitate Windows-based PDA sync for a smallgroup of users. This feature is still available but should be disabled for security reasons. These devices are not officially supported by the IT department at Healthy Helping Hands; only "best effort'1 support is provided.
Current breakdown of computerdevices at Healthy Helping Hands:

Applications
The HR applications suite, named PositivelyPeople, is based on a front-end application that provides access to various modules, including payroll, time sheets, vacation requests, new hires and former employees. The sensitive data in the PositivelyPeople application must be treated with strict confidentiality and must only be accessible to members of the HR user group; distribution of the data must be prevented. The output of the modules can be in either Microsoft Word or Excel file formats, so these applications are co-located with PositivelyPeople on the same Presentation Servers and likewise presented as published applications Thus, users are presented with three applications, PositivelyPeople, Word and Excel, and within these applications each user creates his/her own customized view.
Installation of PositivelyPeople is performed manually based on a thoroughly documented process, and Installation Manager is used to deploy Word and Excel. Because only these three applications are published, there is no process for testing and integrating new applications. All applications are published with consistent settings.
In addition, all users require access to office productivity applications including e-mail
Several months ago, Healthy Helping Hands explored hostingthe CAD application on XenApp 5.0 Platinum for Windows Server 2003 (x86), but only a maximum of five concurrent user sessions could successfully be hosted on each server due to heavy resource requirements even with CPU and memory optimization enabled.
Thevendor for PositivelyPeople has tested and certified the application to run on Windows Server 2008. The vendor has also found that leveraging High Availability for XenApp applications would be beneficial.
Breakdown of all user groups and their applicationrequirements:

Application Access
Users access applications by means of the Web Interface The internal Web Interface site,http://applications.healthyhelpinghands.com, is accessible to all employees but only presents applications to the Human Resources group at this time If the Web Interface will be used in the future environment, this URL should be used because this employee group is already familiar with it.
Mostof the HR users access their application suite internally, however, the IT staff recently created a Secure Gateway/Web Interface server in the DMZ so that users could access their applications while traveling. However, this server is based on older hardware and has had intermittent issues over the past few weeks. Thus, most HR users can no longer rely on having remote access to their applications.
In the new environment, all employees should have remote access to their applications and/or desktops, with theexception of manufacturing floor employees and contractors.
XenApp Farm
TheXenApp farm is based on the following:
-One dedicated data collector -One internal Web Interface server -One Citrix'Microsoft Terminal Services license server -One SQL Server 2005 server hosting the Data Store and EdgeSight databases -One web server hosting EdgeSight web server and SQL Reporting Services -One antiquated file server hosting old user profiles -One Secure Gateway/Web Interface server located in the DMZ -Eight Presentation Server 4 0 servers

Hotfix Rollup Pack 2 (PSE400W2K3R02) is the only hotfix installed on each of the Presentation Server 4.0 servers.
A Citrix policy is configured for all Human Resources group users and has these characteristics: The Advanced Load Evaluator has been applied to all servers in the farm.

Virtualized Desktops
At the current time, virtualized desktops are not used Published desktops are only made available to administrators, and all users in the HR group access their three applications by means of published applications. Because all applications will be virtualized in the future, Healthy HelpingHands will consider published desktops or virtualized desktops for users based on what is deemed most appropriate The CIO has determined that where virtualized desktops will be used. High Availability is required.
Databases
A single SQL Server 2005 server currently houses only the Presentation Server 4.0 data store and Edge Sight databases. This server is maintained by the Healthy Helping Hands database administrators, and a full backup is performed each night as part of the regular maintenance program.

The backend database for the Positively People application is housed at the main data center. It is based on a clustered configuration of SQL Server 2005.
Healthy Helping Hands is moving all databases to SQL Server 2008 based onrobust new hardware and virtualized servers. They would like to transition the Citrix and Positively People databases to this new platform as soon as reasonably possible.
Windows Server and Active Directory
The Presentation Servers are based on Windows 2000 Server. Healthy Helping Hands understands that Microsoft has ended support for this platform and plans to move to Windows Server 2003.
The Terminal Services License Server is hosted on a single domain controller with 100 Client Access Licenses (CALs). Because Windows XP devices include embedded Windows 2000 Server Terminal Services licenses, only about half of the Terminal Services CALs have been consumed.
The IT staff of Healthy Helping Hands has built allof the servers in the Presentation Server farm manually These servers have been in service for several years with no significant changes, so the process of building or rebuilding a server has not been a regular part of maintenance tasks. However, an automated, easy-to-use server build process must be incorporated as part of the new farm design.
The Citrix-related servers are housed within Active Directory as follows:
-Domain, healthyhelpinghands.com -Organizational Unit (OU). Citrix Servers -OU: Presentation Servers (contains the Data Collector and member servers in the production
farm) -OU: Other (contains all other servers)
No logon scripts are enabled for users; Healthy Helping Hands abandoned logon scripts last year in favor of Group Policy Objects.
Healthy Helping Hands applies a minimal set of Group Policy Objects (GPOs)to the Presentation Servers. Only one GPO is applied directly to the Citrix Servers OU, which configures Internet Explorer settings. Other policies are applied at a higher level andinclude settings for Windows Updates.
Roaming profiles were implemented previously, but issues were experienced with one of the Positively People modules. Instead, local profiles are being used and administrators must manually delete the profiles when necessary No Terminal Services-specific home drives have been implemented, as they have been deemed unnecessary.
Network Architecture
The site layout of Healthy Helping Hands: Healthy Helping Hands is a worldwide organization comprised of four data centers in New York, San Francisco, London and Hong Kong and numerous regional offices each connected by a private wide area network to a data center Additionally, hundreds of users work from small regional offices.

Approximately 20% ofall users work from home offices or travel part-time. This is likely to increase significantly due to a new flexible working policy for corporate users Because of this, reliability of remote access will become more important The CIO has emphasized that internal WAN traffic must be kept to a minimum. As such, each user has a home" data center, to which he/she primarily connects; if there is a failure, virtualized applications should fail over to the designated backup data center.
Based on this architecture, the data centers are designed to support specific functions:

Enterprise Storage
User data is stored on the HP SAN Healthy Helping Hands plans to have a Hewlett-Packard Storage Works solution with a capacity of more than 1000TB space physically located at each of the four main data centers. Initially, only about 200TB of space will be used, and there is an internal effort underway to delete files that are no longer required.
Healthy Helping Hands plans to upgrade the storagesolution in order to incorporate redundancy, High Availability and replication between the primary and backup data centers.
Server Hardware
Characteristics of all physical servers associated with the Presentation Server 4.0 environment:

Going forward, Healthy Helping Hands is planning to purchase new hardware to support the planned virtualization environment. This capital expenditure has received preliminary budgeting approval; however, where feasible and reasonable, server virtualizationshould be incorporated in order to maximize the efficiency of data center operations.
Security
Users log on to the Presentation Servers based on Active Directory credentials In addition, the Positively People application requires secondary credentials.Healthy Helping Hands explored using Citrix Single Sign-on (Password Manager), but the rollout failed because training was not provided to users.
Due to the sensitive nature of the HR application, shadowing was disabled during installation of the Presentation Servers. Going forward, however, shadowing should be enabled during installation and only allowed by Citrix policy for Level 3 support personnel.
Anti-virus software is installed on each server, and it is automatically updated every hour.
HR users can access their applications externally by means of the Secure Gateway server; however, this server has had intermittent failures recently. A reliable remote access solution is a requirement for the design project.
Systems Monitoring and Management
HealthyHelping Hands primarily uses EdgeSight Service Monitoring to monitor the Presentation Server environment. When the farm was first implemented, Resource Manager and a centralized monitoring tool were used as the primary monitoring tools but were abandonedwhen EdgeSight
5.0 was implemented about six months ago. Because EdgeSight Service Monitoring is included with Platinum licensing, there was no additional cost to Healthy Helping Hands.
Disaster Recovery
Although the data center in San Francisco serves asthe disaster recovery site for many of Healthy Helping Hands' IT operations, the Presentation Server environment is not incorporated into this site. A detailed Disaster Recovery Plan for the Citrix environment does not exist at this time. As such, the Citrix environment has not been included in any disaster recovery test. Going forward, the CIO has mandated the use of the San Francisco data center for disaster recovery.
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Scenario: The IT managers at Healthy Helping Hands are looking at a project to expand and upgrade their Citrix environment to meet their current and future business needs. The main business requirement for this project is to provide secure and reliable access to company-owned applications for all the current and future staff, including contractors around the world.
Which two issues present a risk to the project and its deadlines based on the assessment document? (Choose two.)

A) Wide range of device types in use
B) Print jobs intermittently fail
C) Unpredictable timing and size of acquisitions
D) A dispersed user community
E) External access only through an intermittently failing Secure Gateway

2. How should the workloads be distributed within the XenServer resource pool?

A) All workloads should be evenly distributed in the resource pool, and for administrative simplification they should be tagged in XenCenter.
B) The server workloads should be provided on XenServer hosts with more CPU cores and speed, ensuring fast processing, and virtual desktops should be provided on XenServer hosts with large memory for maximum density. The virtual disk of each virtual machine will be hosted locally, at the XenServer host.
C) All workloads should be evenly distributed in the resource pool, and for administrative simplification they should be grouped in Active Directory Organizational Units.
D) The server workloads should be provided onXenServer hosts with large memory for maximum density, and virtual desktops should be provided on XenServer hosts with the most CPU cores and speed ensuring maximum user experience for each. The virtual disk of each virtual machine will be hosted locally at the XenServer host.

3. Why is streaming to the XenApp server and streaming to the client the best decision for the Healthy Helping Hands environment?

A) PositivelyPeople has been certified for compatibility with Windows 7.
B) This deployment method provides flexible management of the application and complies with company security requirements.
C) PositivelyPeople must be accessed by all users in the HR user group regardless of endpoint device.
D) This deployment method provides delivery of the application to all users.

4. How should the architect implement the EdgeSight for XenApp agent?

A) Deploy the advanced agent on one XenApp server, configure it for extensive farm monitoring and configure a scheduled report detailing application crashes of published applications.
B) Deploy the basic agent on one XenApp server, configure it for extensive farm monitoring and configure a scheduled report detailing application crashes of published applications.
C) Deploy the basic agent on all XenApp servers and configure a scheduled report detailing application crashes of published applications.
D) Deploy the advanced agent on all XenApp servers and configure a scheduled report detailing application crashesof published applications.

5. Why should Healthy Helping Hands publish the application as 'Streamed to client' and select the 'Enable offline access' option?

A) It reduces the need for application updates.
B) It makes application access for PositivelyPeople more secure.
C) It improves the application performance.
D) This allowsall HR users to access the PositivelyPeople application when disconnected from the network.

質問と回答：