###BeginCaseStudy###
Case Study: 2
Contoso, Ltd.
Scenario:
COMPANY OVERVIEW
Contoso, Ltd. is a consulting company that has a main office and two branch offices. The
main office is located in Johannesburg. The branch offices are located in Brisbane and
Montreal. The Johannesburg office has 400 users. Each branch office has 100 users.
PLANNED CHANGES
Contoso plans to open a new branch office. The new office will have a 512-Kbps connection
to the Montreal office and a 2-Mbps connection to the Internet. The new branch office will
have a domain controller, a DirectAccess server, a file server, and a Web server. All branch
office servers will be virtualized. Contoso plans to implement role-based access control for
all new virtual machines (VMs) deployed on Hyper-V servers.
In the new branch office, a user named User1 must be permitted to perform only the
following actions on the Hyper-V server:
• Start the VMs.
• View the configuration of the VMs.
EXISTING ENVIRONMENT
All servers run Windows Server 2008 R2. All client computers run Windows 7 Enterprise.
The main office has multiple file servers. Each branch office has one file server. Each file
server has two hard disks. One disk has the server’ s operating system installed and the other
disk stores data files. File server backups are performed regularly. The main office has a
Windows Server Update Services (WSUS) server. All client computers are configured to
receive updates from the WSUS server. The main office connects to each branch office by
using a 512-Kbps WAN link.
Existing Active Directory/Directory Services
The network contains a single Active Directory domain named contoso.com. An Active
Directory site exists for each office. Each Active Directory site contains three subnets. Each
subnet contains client computers.
The main office has two domain controllers. Each branch office has one domain controller.
REQUIREMENTS
Storage Requirements
Contoso must meet the following storage requirements:
• Improve data availability on the file servers.
• Improve the performance of the file servers.
• Limit each user’s storage space on the file servers to 2 GB.
• Prevent users from storing audio and video files on the file servers.
• Provide additional storage on the file servers without causing downtime.
• Enable users to access the previous versions of all the files stored on the file servers.
Technical Requirements
Contoso must meet the following technical requirements:
• Minimize the potential attack surface.
• Minimize WAN link utilization between the offices.
• Minimize the number of server licenses purchased.
• Minimize server downtime caused by Applying updates.
• Minimize the amount of administrative effort required to approve the updates.
• Minimize the amount of time it takes for users in the branch offices to access files on
the file servers in the main office.
Problem Statements
Users in the accounting department use a custom Application named App1. The
configurations for App1 can only be changed by editing the registry. Currently, a technician
must visit each client computer in the accounting department to change the App1
configurations.
###EndCaseStudy###
You need to recommend a solution for users in the branch office to access files in the main office.
What should you include in the recommendation?
A.
a BranchCache server that operates in Distributed Cache mode
B.
a BranchCache server that operates in Hosted Cache mode
C.
a domainbased Distributed File System (DFS) namespace and DFS Replication
D.
a standalone Distributed File System (DFS) namespace and DFS Replication
Explanation:
http ://technet.microsoft.com/en-us/library/dd755969%28WS.10%29.aspx
requirement = Minimize the amount of time it takes for users in the branch offices to access
files on the file servers in the main office BranchCache™ is a feature in Windows® 7 and Windows
Server® 2008 R2 that can reduce wide area network (WAN) utilization and enhance network
application responsiveness when users access content in a central office from branch office
locations. When you enable BranchCache, a copy of the content that is retrieved from the Web
server or file server is cached within the branch office. If another client in the branch requests the
same content, the client can download it directly from the local branch network without needing to
retrieve the content by using the Wide Area Network (WAN).
This whitepaper provides an overview of BranchCache, explains the different modes in which
BranchCache operates, and describes how BranchCache is configured. The paper also explains how
BranchCache works with Web servers and file servers and the steps BranchCache takes to determine
that the content is up-to-date.
Hosted Cache mode
The Hosted Cache is a central repository of data downloaded from BranchCache enabled servers into
the branch office by BranchCache enabled clients. The configuration of Hosted Cache mode is
described later in this document.
Hosted Cache mode does not require a dedicated server. The BranchCache feature can be enabled
on a server that is running Windows Server 2008 R2, which is located in a branch that is also running
other workloads. In addition, BranchCache can be set up as a virtual workload and run on a server
with other workloads, such as File and Print.
Figure 2 illustrates Hosted Cache mode and provides a simplified illustration of the document
caching and retrieval process.
