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Microsoft Network Readiness and Assessment for Lync Sample Questions:

1. DRAG DROP
You need to assess the maximum bandwidth required to replace public switched telephone network (PSTN) connections with a Session Initiation Protocol (SIP) trunking service.
Which bandwidth should you allocate for each region? (To answer, drag the appropriate bandwidth or bandwidths to the correct SIP trunk or trunks in the answer area. Each bandwidth may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)

2. You perform a network readiness assessment for Lync deployment for a customer's organization.
The customer's organization includes five sites that are connected by site-to-site virtual private network (VPN) links. Each site includes 20 to 100 client computers.
You want to prepare a Lync traffic simul-ation.
You need to select the network traffic characteristics to collect.
Which three network traffic characteristics should you select? (Each correct answer presents part of the solution. Choose three.)

A) average jitter
B) TCP/IP port statistics
C) one-way network delay
D) average packet loss
E) minimum jitter
F) peer-to-peer (P2P) available bandwidth

3. You perform a network readiness assessment for Lync deployment.
The organization's network includes a head office and 400 branch offices. All branch offices are connected to the head office with a Multiprotocol Label Switching (MPLS) link.
You have completed the traffic simu-lation. The Usage Modeling Data for the Beijing site is shown in the following table:

A summary of the simu-lation results is shown in the table below:

Detailed simu-lation results are shown in the following exhibits:
One Way Network Delay {Click the Exhibit button.)
Average Jitter (Click the Exhibit button.)
Maximum Jitter (Click the Exhibit button.)
Average Packet Loss (Click the Exhibit button.)
Maximum Consecutive Loss (Click the Exhibit button.)





You need to provide recommendations based on the simu-lation results.
What should you recommend?

A) Restrict video capability or reduce quality codec usage for certain user groups.
B) Increase WAN link bandwidth.
C) Monitor Quality of Experience (QoE).
D) Implement Call Admission Control (CAC) on Lync for the affected sites.

4. ===============================
Topic 4, Fabrikam Inc.
Background
Fabrikam, Inc. is a worldwide leader in production and sales of cameras, lenses, flashes, and photography accessories. The company employs 6,500 people worldwide.
The company has its main office in Tokyo; three data centers in Tokyo, New York, and Prague; ten manufacturing units across China; and branch offices in 20 other cities. The network diagram for Fabrikam, Inc. is shown in the exhibit. (Click the Exhibit button.)

For the pilot project, a Front End Server and an Edge Server will be located at the New
York data center. Test users will be located in the Tokyo main office and outside the
Fabrikam network over a public Internet connection.
The company plans to replace the existing traditional non-standard analog Private Branch
Exchange (PBX) implementations with a modern collaboration and telephony solution. This
modernization should allow employees to collaborate efficiently and reduce the company's
phone bills at the same time.
A proposal was made to accomplish this by testing and implementing a Microsoft Lync
2013 infrastructure.
For cost effectiveness, the company wants to utilize the existing network infrastructure
when implementing the Lync 2013 infrastructure.
The company needs to make sure the existing network infrastructure is ready for Lync
2013 implementation by analyzing:
Wide area network (WAN) infrastructure,
Wi-Fi infrastructure, and
Quality of Service (QoS) approaches.
During analysis, rogue access points (APs) were detected, so management wants to
secure the Fabrikam, Inc. wireless network infrastructure.
The company wants to design and implement a wireless local area network controller
(WLC) to minimize operational complexity and support.
---
---
During the test phase of implementation, Lync Phone Edition device users are experiencing voice degradation when they use audio with other Lync users, There are no reports of any problems between Lync phone communications.
Upper management is very concerned about ensuring security over a public network. The recommended solution should use secured protocols such as Transport Layer Security (TLS), Mutual Transport Layer Security (MTLS), or secure real-time transport protocol (SRTP).
Existing Environment
The company's existing environment includes:
a domain controller,
a Microsoft Exchange 2013 infrastructure server, and
a Microsoft SharePoint 2013 server.
The existing analog PBX telephony has reached its capacity in most locations.
Currently the company has a mix of Multiprotocol Label Switching (MPLS) Layer-3 network
and Internet Protocol security (IPSec) using an Asymmetric Digital Subscriber Line (ADSL)
between their locations, a remote VPN network for remote/on-field employees, and Wi-Fi
point-to-point links between buildings within the same locations, as well as internal Wi-Fi
access points. QoS is enabled globally for all WAN and LAN connections. Corporate
firewalls are installed at all locations.
At the Fabrikam, Inc. main office, there are three wireless access points (WAPs) deployed
with no Remote Authentication Dial-In User Service (RADIUS)/AAA. All of them are
configured for channels 2 or 7 with the same Service Set Identifier (SSID) and Wi-Fi
Protected Access-Pre-Shared Key (WPA-PSK).
Users at the main office use the wireless infrastructure, and as users roam they do not
switch over to different WAPs but stay associated with the original WAP until the signal is
completely gone. Then the wireless signal associates with the closest WAP.
For Lync Phone edition devices, QoS is set to its default.
The company's network platforms support only four queues with QoS-based admission.
The company uses traffic shaping and traffic policing.
Business Requirements
Employees travel between sites and require stable and reliable collaboration and phone solutions. The company wants to reduce investment in telecommunications, overseas calling, roaming, and conference call charges. Branches should be able to support up to 24 simultaneous peer-to-peer (P2P) calls between sites.
Employees should be able to call any phone number at any time, be visible, and be able to chat and use audio conferencing.
The company plans to deploy wireless LAN controllers (WLCs) for wireless management and monitoring, and wants to deploy Wireless IP phones in the main office. The company wants to map the Differentiated Services Code Point (DSCP) markings to industry best practices for all media types.
The proposed solution:
- must operate effectively for the entire company, including all locations and remote users, - must be reliable and recoverable in case of network or other problems affecting
any site,
- should offer rapid deployment,
- should be scalable, and
- should consolidate chat, phone, and email.
Technical Requirements
All Session Initiation Protocol (SIP) signaling and media traffic must be encrypted. The company wants integrated security within phones and servers, and Wi-Fi secured communications for WPA/WPA2. The new system should be highly available and should remain fully functional if any one server fails.
The proposed solution must be compatible with most known video and audio device manufacturers. The audio codec bandwidth is shown in the following table:

Fabrikam uses RTAudio Wideband. Call Admission Control (CAC) is disabled for VPN users. The company's existing network supports MPLS, IPSec VPN, and Remote VPN networks. WAP Infrastructure and WLC placement must be cost effective, with capacity management allowing high availability. QoS is currently deployed with non-standard setting for DSCP marking on the TCP/IP packets. Voice over IP (VoIP) requires service guarantees regardless of network conditions.
===============================
You need to recommend channel distribution to resolve the voice over wireless local area network (WLAN) interference problem.
Which channel distribution should you recommend?

A) Use channels 2, 5, and 10.
B) Use channels 1, 6, and 11.
C) Use a four-channel solution.
D) Use a single-channel solution.

5. You need to recommend the appropriate wide area network (WAN) connection for Fabrikam, Inc., including Quality of Service (QoS) support and low latency.
Which technology should you recommend?

A) Multiprotocol Label Switching (MPLS)
B) Internet
C) Frame Relay
D) Virtual private network (VPN)

Solutions: