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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 to wheelchairs. 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, specifically with 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 Citrix Delivery 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 and access 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 64-bit 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):
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:
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. With the 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. In formal 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.
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, most office 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 small group 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 computer devices at Healthy Helping Hands:
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
In addition, all users require access to office productivity applications including e-mail
Several months ago, Healthy Helping Hands explored hosting the 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
The vendor 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 application requirements:
Users access applications by means of the Web Interface The internal Web Interface site, , 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. Most of 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 the exception of manufacturing floor employees and contractors.
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.
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 Helping Hands 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.
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 on robust 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 all of 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:
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 and include 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
manually delete the profiles when necessary No Terminal Services-specific home drives have been implemented, as they have been deemed unnecessary.
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% of all 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:
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 storage solution in order to incorporate redundancy,
High Availability and replication between the primary and backup data centers.
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 virtualization should be incorporated in order to maximize the efficiency of data center operations.
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
Healthy Helping 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 abandoned when 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.
Although the data center in San Francisco serves as the 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.
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. Print jobs intermittently fail
B. A dispersed user community
C. Wide range of device types in use
D. Unpredictable timing and size of acquisitions
E. External access only through an intermittently failing Secure Gateway
Correct Answer: BD Explanation
Which three sections should an architect incorporate into the Project Initiation Document (PID) to ensure that the project meets the business and technical requirements of Healthy Helping Hands? (Choose three.)
A. Risk Log
B. Stage Plan
C. Project Scope
D. Detailed Design
E. Resource Requirements
Correct Answer: ACE Explanation
Explanation/Reference: QUESTION 3
Given the three user types in the Healthy Helping Hands environment, task workers, mobile workers and knowledge works, which two user groups would be classified as task workers? (Choose two.)
E. Customer Service
Correct Answer: DE Explanation
Given the three user types in the Healthy Helping Hands environment, task workers, mobile workers, and knowledge workers, which two user groups would be classified as knowledge workers? (Choose two.)
E. Customer Service
Correct Answer: BC Explanation
Based on the assessment document, for which user group may an administrator need to use ICA session policies to control session bandwidth?
D. Customer Service
E. Human Resources
Correct Answer: B Explanation
Given the three user types in the Healthy Helping Hands environment, task workers, mobile workers and knowledge workers, which two user groups would be classified as mobile workers? (Choose two.)
A. IT staff
B. Sales staff
C. HR employees
D. Marketing personnel
Correct Answer: BC Explanation
Scenario: As Healthy Helping Hands continues to expand, the demands placed on the current solution will increase significantly. As such, an architect must assess the current hardware to identify constraints against the company’s future growth.
Which statement best describes a current hardware constraint?
A. Hard drive capacity cannot be expanded due to space limitations.
B. Existing server processors are not capable of supporting 64-bit architecture.
C. The existing 1Gbps server NIC speed is insufficient for home user connectivity.
D. Server memory is at or above the maximum supported by the current hardware and operating system.
Correct Answer: D Explanation
Printing security is a key requirement for the Human Resources department of Healthy Helping Hands.
Which printing policy setting should be configured to enhance security for the HR department?
A. All User Printers
B. Session Printers only
C. User’s Default Printer only
D. Local (Non-Network) Printers only
Correct Answer: B Explanation
The architect is deciding how to best deliver the Healthy Helping Hands application suite.
Based on the information given in the assessment document, which application should be streamed to desktops rather than published?
A. Finance application suite
B. Engineer’s CAD application
C. Manufacturing ERP application suite
D. HR PositivelyPeople application suite
Correct Answer: B Explanation
During the data collection and analysis phase of the project, architects discovered that certain user groups require access to several versions of Internet Explorer.
How should the architect design a deployment scenario for older versions of Internet Explorer that must be maintained indefinitely in the environment?
A. Create one virtual machine hosted application for each Internet Explorer version and publish the applications.
B. Create one streaming application for each Internet Explorer version and stream the applications directly to user devices.
C. Create one application isolation environment for each Internet Explorer version and publish the applications with XenApp.
D. Create application silos by installing different versions of Internet Explorer to different XenApp servers and publish the applications with XenApp.
Correct Answer: A Explanation
Scenario: Before upgrading or expanding the Healthy Helping Hands environment, an architect wants to be sure that all current application issues are identified so they can be addressed.
Based on the assessment document, which two tools would be best suited to ensure all current issues have been identified before moving forward with the project? (Choose two.)
B. Resource Manager
C. Windows Event Logs
D. Windows Performance Monitor
Correct Answer: AC Explanation
Based on the assessment document, which two actions must the architect take regarding Citrix licensing in order to properly assess the environment? (Choose two.)
A. Restart the IIS Service.
B. Restart the Citrix Licensing Service.
C. Add the REPORTLOG keyword to the options file.
D. Create a file called REPORT.LOG in C:\Program Files\Citrix\MyFiles.
E. Select a network share to which the local system account has write access.
Correct Answer: BC Explanation
Scenario: The IT manager at Healthy Helping Hands decided to pilot EdgeSight on the existing Presentation Server 4.0 farm to gather information regarding the slow logon times that Human Resources users are experiencing. The administrators completed the following tasks:
Installed the EdgeSight Server on a Windows Server 2003 SP1 server with the appropriate software versions for all prerequisites documented in the EdgeSight Installation Guide
Installed the EdgeSight Web Server, SQL Server 2005 SP2 Database with Reporting Services and EdgeSight console on a single server for the pilot
Installed the EdgeSight agent on all eight of the servers in the Presentation Server 4.0 farm
Configured EdgeSight to use the default worker and agent settings
Verified that all eight of the agents reported to the EdgeSight console within the first 24 hours after installation
After seven days, the data is examined and the reports show the following:
Session information, such as Logon Time and Session ID, is captured and reported for all the user sessions. Detailed information about the logon experience,
such as the Profile Load Time (PLSD) or Logon Script Execution time (LSESD), is displayed in the reports.
Which statement accurately describes why the End-User Experience Metrics (EUEM) is unavailable through the default reports on the EdgeSight Console?
A. These metrics are available but must be accessed by querying the agent’s local Firebird database directly.
B. These metrics are available in the EdgeSight SQL database; a custom report can be created through Reporting Services.
C. The Human Resource users are accessing the Presentation Server 4.0 environment using an unsupported Citrix plug-in that does not send the metrics.
D. The server running Presentation Server 4.0 does not support the collection of these metrics because the server is unaware of the EUEM virtual ICA channel.
Correct Answer: D Explanation
— Exhibit —
Scenario: Healthy Helping Hands has created a new pilot XenApp 5 Platinum Edition farm with applications delivered to 25 pilot users. The pilot farm includes all the applications that were previously published to the HR users and some additional applications to support Manufacturing. During the pilot week of September 14th, the users of the PositivelyPeople application reported that the application was responding slowly.
Fortunately, EdgeSight had been installed and configured in the pilot farm and was recording data during the pilot. Attached in the exhibit is the information gathered from the Transaction Network Delay report from EdgeSight.
Which theory effectively explains the data that is presented in the report?
A. The XenApp server is waiting on another host to respond, most likely the server hosting the PositivelyPeople database.
B. The XenApp server is waiting on the network packet queue to clear as evidenced by the 9ms network latency being reported.
C. The XenApp server is reaching maximum capacity, and the lack of physical resources on the XenApp server is causing the response delay.
D. The Network Delay on 9/19/2009 is probably the source of complaints from the HR Users. An average network latency of almost 9ms is unacceptable.
Correct Answer: A Explanation
Healthy Helping Hands has decided to replace the PCs used by the Customer Service and Manufacturing teams with new thin clients, as the PCs are running operating systems which are no longer covered by extended support.
How many of these thin clients will need to be purchased?
D. 3050 Correct Answer: B
How should an architect recommend delivering applications to the Manufacturing users at Healthy Helping Hands?
A. Publish the applications to new PCs.
B. Publish the applications to their existing devices.
C. Use XenDesktop to deliver disk-based thin clients.
D. Publish the applications to new diskless thin clients. Correct Answer: D
Explanation Explanation/Reference: QUESTION 17
Scenario: The IT managers at Healthy Helping Hands are looking into making New York and San Francisco their two principal sites, each capable of failing over to the other. This will be one of the major requirements for the Citrix infrastructure design.
Which two backend infrastructure components need improvements in disaster recovery support as part of this project? (Choose two.)
A. HP SAN storage
B. User Profile server
C. PositivelyPeople database
D. Terminal Services license server Correct Answer: CD
Which two components need to be included in the updated disaster recovery plan, given the current Disaster Recovery Plan as outlined in the assessment document? (Choose two.)
A. EdgeSight database
B. User data directories
C. Citrix XenApp servers
D. User profile directories
E. PositivelyPeople database Correct Answer: CE
Scenario: In order to plan for the possibility of a pandemic flu, the HR department for Healthy Helping Hands has asked an architect to test whether the infrastructure could accommodate 300 key or “at risk” workers working from home over a two week period.
Based on the information in the assessment document, can the existing infrastructure support such a situation?
A. No, there are insufficient licenses available to support this requirement.
B. Yes, sufficient capacity exists to support this temporary requirement; no action is required.
C. No, two additional servers are required to support the remote workers during this two week period.
D. No, the Secure Gateway/Web Interface server has insufficient capacity to support this requirement.
Correct Answer: A Explanation Explanation/Reference:
Scenario: As part of a government initiative to provide support to the general public during a global pandemic, Healthy Helping Hands is required to contribute to a national helpline service. This will require an additional 500 to 2000 users to be logged into the Healthy Helping Hands applications. To comply with this requirement, Healthy Helping Hands will need to provide the additional capacity within 24 hours of the request. The additional capacity must also be fully secure and fault tolerant.
Based on the current infrastructure, how would the architect meet the requirement in this scenario?
A. The current infrastructure would only require publishing additional applications in the current XenApp farm.
B. To meet capacity requirements, XenDesktop would be required to allow additional connections to be made.
C. The current infrastructure would only require the Secure Gateway/Web Interface components to be upgraded.
D. To meet capacity requirements a Provisioning Services server would be required to bring additional server capacity online when required. Correct Answer: D
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