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Microsoft Network Readiness and Assessment for Lync Sample Questions:

1. DRAG DROP
Your customer's network includes a main office in Moscow and branch offices in Helsinki and Stockholm- Both branch offices are connected to the main office by WAN links.
You complete a Lync network readiness assessment. The relevant portions of the Lync traffic simul-ation results for each branch office are shown in the following exhibits:
Helsinki Lync traffic (Click the Exhibit button.)
Stockholm Lync traffic (Click the Exhibit button.)


You prepare a final slide presentation that shows the assessment results.
You need to include recommendations for the branch offices in the presentation slides.
Which recommendation should you make for each branch office? (To answer, drag the appropriate recommendation or recommendations to the correct branch office or offices in the answer area. Each recommendation may be used once or not at all. You may need to drag the split bar between panes or scroll to view content.)

2. You need to identify the metric that is causing poor quality in Lync calls by analyzing the user activity report collected by the help desk department.
Which metric should you choose?

A) jitter
B) packet loss
C) round trip
D) burst gap duration

3. Topic 6, Mix Questions
You prepare to deliver a network assessment for a customer. The customer has four sites as described in the following table:

The results of the traffic simu-lation for Seattle to Hong Kong are shown in the following table:

You need to analyze the data and provide the General Comments for the traffic simu-lation results. What should you recommend?

A) The packet loss is above 0.5%. Audio quality will be greatly reduced.
B) The percentage of WAN BW for RTC Traffic is greater than 100%, and users will experience poor calls due to limited bandwidth.
C) The network performance tests indicate the link is ready for voice.
D) The average delay is beyond acceptable levels. Users might experience poor call quality.

4. You need to identify the current average amount of bandwidth required for peer-to-peer (P2P) voice calls for all three sites.
Which bandwidth should you choose?

A) 51,150 Kbps
B) 135,795 Kbps
C) 36,960 Kbps
D) 80,025 Kbps

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

Solutions: