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Preparation Guide for Exam 70-638
TS: Microsoft Office Communications Server 2007, Configuring

Audience profile
Candidates for this exam should have a minimum of one year of experience using Microsoft Office Communications Server 2007 and related technologies. In addition, candidates should have experience using and configuring Active Directory and network infrastructure components that support the deployment and ongoing management of Office Communications Server 2007.

Credit toward certification
When you pass Exam 70-638: TS: Microsoft Office Communications Server 2007, Configuring, you complete the requirements for the following certification:

• Microsoft Certified Technology Specialist (MCTS): Office Communications Server 2007, Configuration

Exam 70-638 also earns credit as an elective exam toward the following certifications:

• Microsoft Certified Systems Administrator (MCSA) on Windows Server 2003
• Microsoft Certified Systems Engineer (MCSE) on Windows Server 2003
• Microsoft Certified Systems Administrator (MCSA) on Microsoft Windows 2000 Server
• Microsoft Certified Systems Engineer (MCSE) on Microsoft Windows 2000 Server

Preparation tools and resources
In addition to your hands-on experience working with the product, Microsoft Learning recommends that you use the following tools and training to help you prepare for this exam. These training resources do not necessarily cover all of the topics listed in the “Skills measured” section.

Classroom training Microsoft E-Learning Microsoft Press books Practice tests
There is no classroom training currently available.
Collection 5125: Introducing Microsoft Office Communications Server 2007
There are no Microsoft Press books currently available.
MeasureUp
(Measureup.com)

Self Test Software
(Selftestsoftware.com)

Microsoft online resources
• Microsoft Office Communications Server 2007 – Learning Portal: Find special offers and information on training and certification.

• Product information: Visit the Microsoft Office Communications Server 2007 Web site for detailed product information.

• TechNet: Designed for IT professionals, this site includes how-to instructions, best practices, downloads, technical resources, newsgroups, and chats.

• MSDN: Designed for developers, the Microsoft Developer Network (MSDN) features code samples, technical articles, downloads, newsgroups, and chats.

• Microsoft Learning Community: Join newsgroups and visit community forums to connect with peers for suggestions on training resources and advice on your certification path and studies

TS:MS Office Communications Server 2007, Configuring : 70-638 Exam
Exam Number/Code: 70-638
Exam Name: TS:MS Office Communications Server 2007, Configuring

“TS:MS Office Communications Server 2007, Configuring”, also known as 70-638 exam, is a Microsoft certification. With the complete collection of questions and answers, Pass4sure has assembled to take you through 40 Q&As to your 70-638 Exam preparation. In the 70-638 exam resources, you will cover every field and category in TS helping to ready you for your successful Microsoft Certification.

QUESTION 1:
You work as the network administrator at Certkiller .com. The Certkiller .com
network consists of a single Active Directory domain named Certkiller .com. All
servers on the Certkiller .com network run Windows Server 2003 and all client
computers run Windows XP Professional.
A member server named Certkiller -SR14 is an application server on your
network. You are assigned to monitor the performance of Certkiller -SR14. An
application hosted on Certkiller -SR14 is used during the day, by users working in
the Sales department. You installed the application last week, but since then you
have had to restart Certkiller -SR14 on numerous occasions.
You want to monitor the server to determine whether there is an existing memory

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bottleneck. You open System Monitor to view performance data collected on
Certkiller -SR14. The exhibit shows the performance object counter values over
the past few weeks.
What should you do to improve the performance of Certkiller -SR14?
A. Add an additional CPU.
B. Add additional RAM.
C. Replace your network adapter with a faster network adapter.
D. Replace your hard disk with a faster one.
E. Schedule your application to run during off peak hours.
Answer: B
Explanation: The
Memory: Pages/sec counter indicates the rate at which pages are written to disk, or
read from disk. With a recommended counter threshold of 20 or below 30,
depending on your computer; a high value such as 80 is indicative of insufficient
RAM, memory bottlenecks or memory leaks.
The Memory: Page Faults/sec counter would give you an idea of the rate at which page
faults are occurring. An acceptable counter value for Memory: Page Faults/sec is 150,
providing you have a fairly new computer. The exhibit shows the value of the Memory:
Page Faults/sec counter as 500.
Both counters indicate the need for more RAM on Certkiller -SR14. Supplementing
your RAM supply would improve the performance of Certkiller -SR14. Users should
be able to run the new application on your application server with no issues.
Incorrect answers:
A: The Processor: % Processor Time counter should be tracked if you want to detect a
process which is utilizing over 85 percent of the processor time. In this case, the current
value of the % Processor counter does not indicate a processor issue. An average over
85% would indicate a CPU bottleneck.
C: The majority of Ethernet networks run at 100Mbps or below.
D: ThePhysical Disk: % Disk Time counter indicates the percentage of time that a drive
is active, and has a threshold of 85 percent. In your case, while the counter is fairly high
at 85%, only two requests are in the queue. This is quite acceptable for a single hard disk.
E: There is no need to schedule the application to run at night. Users need to run the

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application during the day, which can be made possible by simply adding more RAM to
your server.
QUESTION 2:
You work as the network administrator at Certkiller .com. The Certkiller .com
network consists of a single Active Directory domain named Certkiller .com. All
servers on the Certkiller .com network run Windows Server 2003 and all client
computers run Windows XP Professional.
Certkiller .com recently purchased a host-connectivity gateway application that was
developed by an independent software vendor. You need to ensure that the
application is installed on a Windows Server 2003 computer named
Certkiller -WS290.
You assign installation of the application to a support technician named Ally
Wagner. When the installation fails and an error message stating the user account
used for installing the application needs to be a member of the local Administrators
group is displayed, you realize that Ally Wagner’s user account is not a member of
the Administrator’s group on Certkiller -WS290.
Your user account is a member of the Domain Admins group. You would like to
enable Ally Wagner to install applications, but you also want to prevent her from
making other changes on Certkiller -WS290.
Which of the following is an option that will allow you to do this?
A. Log on locally on Certkiller -WS290 as the local administrator. On
Certkiller -WS290, in Control Panel, start Add or Remove Programs. Instruct Ally
Wagner to install the application.
B. Use the Run as option to start the Add or Remove Programs Control Panel item on
Certkiller -WS290. Provide the credentials of the local Administrator account. Instruct
Ally Wagner to install the application.
C. Make Ally Wagner’s user account a member of the local Administrators group on
Certkiller -WS290. Instruct him to log on locally by using his user account and to
install the application.
D. Instruct Ally Wagner to log on locally and to send a Remote Assistance request to you.
Accept the request, and take remote control of the session. On Certkiller -WS290, in
Control Panel, start Add or Remove Programs. Instruct Ally Wagner to install the
application.
Answer: B
Explanation:
The Run As option allows you to use a secondary logon process to log on to a computer
using administrative credentials in order to perform a specific task. For security purposes,
it is recommended that you use the Run As option when performing administrative tasks
as opposed to logging into a computer or domain with an administrative account. You
can use the Run As option through most Windows programs, some Control Panel items,
and the Microsoft Management Console (MMC). You can also use the Run As option

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with command-line utilities.
The Domain Admins group has complete administrative rights over the domain. By
default, the Administrator user account is a member of this group.
Since Ally Wagner is not a member of the Administrator’s group on Certkiller -WS290,
you should follow option B to enable Ally Wagner to install the application from her user
account.
Reference:
Lisa Donald, Suzan Sage London & James Chellis, MCSA/MCSE: Windows(r)Server
2003 Environment Management and Maintenance Study Guide, Sybex Inc. Alameda,
2003, pp. 165
QUESTION 3:
You work as the network administrator at Certkiller .com. The Certkiller .com
network consists of a single Active Directory domain named Certkiller .com. All
network servers on the Certkiller .com network run Windows Server 2003. You only
provide network assistance during business hours, which is from 8 A.M. to 5 P.M.
A Certkiller .com server, named Certkiller -SR01, stores personal files for all
Certkiller .com’s network users. Mobile users access files on Certkiller -SR01
24-hours a day, through Certkiller .com’s VPN.
You have to be capable of discovering the reason why VPN access experiences
recurring slowdowns.
Your first step is to log on to Certkiller -SR01.
Of the following options, which one should you execute next?
A. Open Task Manager to review network utilization of the VPN adapter.
B. Open the Performance console to create a log of network utilization outside of
business hours.
C. Open System Monitor to review network utilization of the VPN connection.
D. Open Task Manager to select Bytes Sent as the Network Adapter History setting.
Answer: C
Explanation:
We are required to monitor the network utilization of the VPN connection over a certain
period of time (at least 24 hours). This can be done by making use of System Monitor.
Incorrect Answers:
A: Task Manager does not log performance. It only displays a real time set of values,
thus you cannot view network utilization of the VPN adapter.
B: We need to log network utilization throughout the whole day, not just out of business
hours.
D: Task Manager only displays a real time set of values is does not log performance.
Reference:
Deborah Littlejohn Shinder, Dr. Thomas W. Shinder, Laura E. Hunter and Will Schmied,
Managing and Maintaining a Windows Server 2003 Environment Study Guide & DVD
Training System, pp. 624-628

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